6.0POWER HOUSEITEM 6.1CLEARING AND GRUBBING(Same as Item
2.2)
ITEM 6.2EARTH EXCAVATION(Same as Item 2.3)
ITEM 6.3ROCK EXCAVATION(Same as Item 2.4)
ITEM 6.4HAULING OF MATERIALS(Same as Item 2.5)
ITEM 6.5GRAVEL (BASE COURSE)6.5.1 GENERAL6.5.1.1 DESCRIPTIONThis
item shall include furnishing, placing and compacting and all
labor, materials, tools and equipment necessary for furnishing and
placing one or more layers of gravel base or leveling course on a
prepared surface to the lines and grades in accordance with this
specification or as shown on the Plans otherwise identified by the
Engineer.6.5.2MATERIAL REQUIREMENTSAggregate for base course shall
consist of hard, durable particles or fragments of crushed stone,
crushed slag, or natural gravel and filler of natural or crushed
sand or other finely divided mineral matter. The composite material
shall be free from vegetable matter and lumps or balls of clay, and
shall be such nature that it can be compacted readily to form a
firm, stable sub base. The base course material shall conform to
the following table whichever is called for in the Bill of
Quantities.SieveDesignationMassPercent Passing
Standard (mm)Alternate US StandardGRADING AGRADING B
502100-
37.511/2-100
25.0160 85-
19.0-60 85
12.535 65-
4.75No. 420 5030 55
0.0425No. 405 208 25
0.075No. 2000.122 14
The fraction passing the seventy five hundredths (0.75)
millimeters (No. 200) sieve shall not be greater than 0.66 (two
thirds) of the fraction passing the four hundred twenty five
thousandths (0.425) millimeters (No. 40) sieve. The fraction
passing the four hundred twenty five thousandths (0.425)
millimeters (No. 40) sieve shall have a liquid limit not greater
than twenty five (25) and plasticity index not greater than 6 as
determined by AASHTO T 89 and T 90, respectively.Those coarse
portions, retained on a two (2) millimeters (No. 10) sieve shall
have a mass percent or wear not exceeding fifty (50) by the Los
Angeles Abrasion test determined by AASHTO T 96.The material
passing the nineteen (19) millimeters ( inch) sieve shall have a
soaked California Bearing Ratio (CBR) value of not less than eighty
(80) percent as determine by AASHTO T 193. The CBR value shall be
obtained at the maximum dry density (MDD) as determined by AASHTO T
180, Method D.If filler, in addition to that naturally present, is
necessary for meeting the grading requirements or for satisfactory
bonding. It shall be uniformly blended with the base course
material on the road or in a pug mill unless otherwise specified or
approved. Filler shall be taken from sources approved by the
Engineer. It shall be free from hard lumps and shall not contain
more than fifteen (15) percent of material retained on the four and
seventy five hundredths (4.75) millimeter (No. 4)
sieve.6.5.3CONSTRUCTION REQUIREMENTS6.5.3.1 PLACINGThe aggregate
sub base materials shall be placed at a uniform mixture on a
prepared subgrade in a quantity which provide the required
compacted thickness. When more than one layer is required, each
layer shall be shaped and compacted before the succeeding layer is
placed. The placing of materials shall begin at the point
designated by the Engineer.Placing shall be from vehicles
especially equipped to distribute the material in continuous
uniform layer or windrow. The layer or windrow shall be such size
that when spread and compacted, the finished layer be in reasonably
close conformity to the nominal thickness shown on the
Plans.6.5.3.2 SPREADING AND COMPACTINGWhen uniformly mixed, the
mixture shall be spread to the planthickness, for compaction. Where
the required thickness is one hundred fifty (150) millimeter or
less, the material may be spread and compacted in one layer. Where
the required thickness is more than one hundred fifty (150)
millimeter, the aggregate sub base shall be spread and compacted in
two or more layers of approximately equal thickness, and the
maximum compacted thickness of any layer shall not exceed one
hundred fifty (150) millimeter. All subsequent layers shall be
spread and compacted in a similar manner. If the layer of
subsequent material, or part thereof, does not conform to the
required finish, the Contractor shall, at his own expense, make the
necessary corrections.Compaction of each layer shall carry on until
a field density of at least one hundred (100) percent of the
maximum dry density is defined in agreement with AASHTO T 180 has
been achieved. In place density determination shall be made in
accordance with AASHTO T 191.6.5.3.3 METHOD OF MEASUREMENTAggregate
Base Course will be measured by the cubic meter. The quantity to be
paid for shall be the design volume compacted in place as shown on
the Plans, and accepted in the completed base course. No allowance
shall be given for materials placed outside the design limits shown
on the cross sections. Trial section shall not be measured
separately but shall be included in the quantity of aggregate base
course.6.5.4 MEASUREMENT/BASIS OF PAYMENTThe accepted measured
quantities shall be paid for at the contract unit price for
Aggregate Base Course which price and payment shall be full
compensation for furnishing and placing all materials, including
all labor, equipment, tools and incidentals necessary to complete
the work prescribed in this item.
ITEM 6.6REINFORCING BARS GRADE 40(Same as Item 2.2.3)
ITEM 6.7FORM/DEFORM WORKS(Same as Item 2.2.4)
ITEM 6.8CONCRETING WORKS (3500 PSI)(Same as Item 2.3.5)
ITEM 6.9FABRICATION AND INSTALLATION OF STEEL STRUCTURES(Same as
Item 5.2.1)
ITEM 6.10FABRICATION AND INSTALLATION OF STEEL FRAMINGS FOR
SIDINGS6.10.1 GENERAL6.10.1.1 DESCRIPTIONThis item includes all
labor, equipment, materials and incidentals for fabrication and
installation of steel frames for sidings. All process for the
stated work shall be in accordance with the
standards.6.10.2MATERIAL REQUIREMENTSQuality in all materials shall
be ensured to meet all required parameters as shown on the Plans.
All materials shall comply with the latest applicable standards of
the ASTM, unless otherwise specified or approved by the
Engineer.Fabricator shall be well experienced in metal fabrications
and can successfully produce similar to what is shown on the Plans.
He should also have sufficient production capacity to fabricate
required units without causing delay in the work.Welds and welding
processes shall comply on specifications as provided herein.
Welders shall be efficient with accomplished satisfactory trainings
and passed AWS qualification.6.10.2.1DELIVERY, STORAGE AND
HANDLINGShipping statements shall be delivered in the jobsite. The
Engineer shall inspect the materials per delivery taking into
account the deliverys quantity and condition. Materials shall be
properly protected against damage to finished surfaces.Store
materials in a location and in a manner to avoid damage. Stacking
shall be done in a way which will prevent bending. Storage shall be
clean and dry. Cover with any suitable covering or as prescribed by
the Engineer in a manner that will permit circulation of air inside
the cover.Keep handling on site to a minimum. Exercise care to
avoid damage on finishes of materials.6.10.2.2PROJECT
CONDITIONSCheck actual locations of walls and other constructions
to which metal fabrications must fit, by accurate field
measurements before fabrication; show recorded measurements on
final shop drawings. Coordinate fabrication schedule with
construction progress to avoid delay of work.Where field
measurements cannot be made without delaying the work, guarantee
dimensions and proceed with fabrication of products without field
measurements. Coordinate construction to ensure that actual opening
dimensions corresponds to guaranteed dimensions. Allow for trimming
and fitting.6.10.2.3FABRICATIONForm metal fabrications from
materials of size, thickness, and shapes indicated but not less
than that needed to comply with performance requirements indicated.
Work to dimensions indicated or accepted on shop drawings, using
proven details of fabrication and support. Use type of materials
indicated or specified for various components of each metal
fabrication.Form exposed work true to line and level with accurate
angles and surfaces and straight sharp edges.Allow for thermal
movement resulting from the following maximum change (range) in
ambient temperature in the design, fabrication. And installation of
installed metal assemblies to prevent buckling, opening up of
joints, and overstressing of welds and fasteners. Base design
calculations on actual surface temperatures of metals due to both
solar heat gain and nighttime sky heat loss.Temperature must range
if applicable between 100 deg. F (38 deg. C).Shear and punch metals
cleanly and accurately. Remove burrs.Form bent metal corners to
smallest radius possible without causing grain separation or
otherwise impairing work.Remove sharp or rough areas on exposed
surface.Weld corners and seas continuously to comply with AWS
recommendations and the following:a.Use materials and methods that
minimize distortion and develop strength and corrosion resistance
of base metals.b.Obtain fusion without undercut or overlapc.Remove
welding flux immediatelyd.At exposed connections, finish exposed
welds and surfaces smooth and blended so that no roughness shows
after finishing and contour of welded surface matched those
adjacent.Form exposed connections with hairline joints, flush and
smooth, using concealed fasteners wherever possible. Use exposed
fasteners of type indicated. Locate joints where least
conspicuous.Provide for anchorage of type indicated; coordinate
with supporting structure. Fabricate and space anchoring devices to
provide adequate support for intended use.Preassemble items in shop
to greatest extent possible to minimize field splicing and
assembly. Disassemble units only as necessary for shipping and
handling limitations. Use connections that maintain structural
value of joined pieces. Clearly mark units for reassembly and
coordinated installation.Cut, reinforce, drill and tap
miscellaneous metal work as indicated to receive finish hardware,
screws, and similar items.Fabricate joints that will be exposed to
weather in a manner to exclude water, or provide weep holes where
water may accumulate.6.10.3 MEASUREMENT/BASIS OF PAYMENTThe
accepted quantity, measured as Bill of Quantities shall be paid for
at the contract unit price for steel materials which price and
payment shall be full compensation for furnishing and placing all
materials, including all labor, equipment, tools and incidentals
necessary to complete the work prescribed in this item.
ITEM 6.11FABRICATION AND INSTALLATION OF TRUSS6.11.1
GENERAL6.11.1.1 DESCRIPTIONThis item includes all labor, materials,
equipment and processes necessary for fabrication and installation
of steel truss. Installation method shall be in accordance with
standard specifications6.11.2MATERIAL
REQUIREMENTS6.11.2.1FABRICATIONa.Factory fabricate cold formed
steel trusses plumb, square, true to line, and with connections
securely fastened, according to manufacturers recommendations and
the requirements of this section.- Fabricate truss assemblies in
jig templates- Cut truss members by sawing or shearing or plasma
cutting- Fasten cold formed steel truss members by screw fastening
or other methods as standard with fabricatorb.Care shall be taken
during handling, delivery and erection. Brace, block, or reinforce
truss as necessary to minimize member and connection stresses.
6.11.2.2INSTALLATIONa.General- Erection of trusses, including
proper handling, safety precautions, installation of bracing and
other safeguards or procedures is the responsibility of the
Contractor and the Roof Installer.- Exercise care and provide
installation bracing required to prevent toppling of trusses during
erection. Provide furring channel or stud material for lateral
bracing.b.Erect trusses with plane of truss webs vertical and
parallel to each other, accurately located at design spacing
indicatedc.Provide proper lifting equipment, including spreader
bar, suited to sizes and types of trusses required, applied at lift
points recommended by truss fabricator. Exercise care to avoid
damage to truss members during erection and to keep horizontal
bending of the trusses to a minimum.d.Provide framing anchors as
indicated on the Plans or accepted by the Engineer. Anchor trusses
securely at bearing points.6.11.2.3ROOF TRUSSES
INSTALLATIONa.Install trusses per installation documentsb.Space
trusses per sealed truss drawingsc.Do not alter, cut, or remove
truss members or connections of truss membersd.Erect trusses with
plane of truss webs plumb and parallel to each other, align, and
accurately position at spacing indicated.e.Erect trusses without
damaging truss members or connections.f.Anchor trusses securely at
all points of support, per installation documents.g.Install all
continuous bridging and permanent truss bracing per installation
documents.h.Perform all truss to truss connections per installation
documents.6.11.3 MEASUREMENT/BASIS OF PAYMENTThe method of
measurement is as per accomplishment of installed steel truss.
Fabrication, supply and installation of steel truss shall be
included in the Bill of Quantities. The accepted quantities,
measured shall be paid for at the Contract unit price Pay Items
that is included in the Bill of Quantities, which price and payment
shall be full compensation for furnishing all labor, equipment,
tools and incidentals necessary to complete the Work prescribed in
this Item.
ITEM 6.12FABRICATION AND INSTALLATION OF
PURLINS6.12.1GENERAL6.12.1.1 DESCRIPTIONThis specification covers
the design, manufacture, shipping, handling and erection of a
prefabricated membrane covered structure.6.12.2 MATERIAL
REQUIREMENTSThe membrane shall be tensioned over the framework. The
structure shall be rectangular in shape with vertical gable end
walls. The interior of the structure below the main trusses shall
be clear span free of any structural support members and shall
provide unobstructed floor space. No exterior purlins, guy ropes or
cables shall be used for anchoring the structure.6.12.3
EXECUTIONRoof and Walls Surfaces: To provide for maximum
compatibility with standard door, window, ventilation and other
accessory and cladding systems and the structure shall be designed
such that roof and gable side wall surfaces form flat planesPurlin
Spacing: To provide for structural stability and to provide for the
installation of accessory items, the main structural trusses shall
be laterally braced by purlins at intervals required in the truss
design.Connecting Joints: Connections between structural elements
shall be designed so as to transfer the compressive and tensile
forces present in a given joint.Mechanical Equipment Interface: The
main structural roof trusses shall allow for installation of
electrical and mechanical equipment. Likewise, the structure shall
accept penetration through the membrane for access doors and
mechanical services with minimal modification.Shipping: The main
structural trusses shall be two dimensional; planar trusses which
nest tightly together in order to minimize shipping and storage
volume.Ancillary System: The structure shall be designed such that
it can be readily retrofitted with insulation systems and other
ancillary system such as lighting, sprinklers, HVAC, etc.6.12.3.1
HANDLING AND STORAGECorrect handling and storage is critical to
ensure the purlin is not damaged on site. The following points must
be adhered to for maximum product durability and performance over
the expected life of the product.a. A visual inspection should be
carried out, when delivery is taken on site, of all the material
supplied to ensure the product is free from damage and the
galvanized coating is in good condition.b. Damaged product
resulting in a distorted or buckled section shape must be installed
and should be replaced.c. Site storage must be clear of the ground
on dunnage to allow the free movement of air around each bundle.
When product is stored on site, it must be kept dry using covers
over each product bundle.d. Wear protective gloves when handling
the product. Treat all cut edges as sharp.e. Product must always be
lifted when and not dragged as damage to the galvanized coating
will occur.f. Diamond bracing must be relied upon to act as lifting
points during crane age of preassembled
sections.6.12.4MEASUREMENT/BASIS OF PAYMENTThe method of
measurement is as per accomplishment of installed purlins.
Fabrication, supply and installation of purlins shall be included
in the Bill of Quantities. The accepted quantities, measured shall
be paid for at the Contract unit price Pay Items that is included
in the Bill of Quantities, which price and payment shall be full
compensation for furnishing all labor, equipment, tools and
incidentals necessary to complete the Work prescribed in this Item.
ITEM 6.13FABRICATION AND INSTALLATION OF
ROOFING6.13.1GENERAL6.13.1.1DESCRIPTIONThis item includes all
labor, materials, equipment and processes necessary for fabrication
and installation of roofing. Installation method shall be in
accordance with standard specifications.6.13.2MATERIAL
REQUIREMENTSMaterials for roofing shall be one and two tenths (1.2)
millimeters thick Coloroof sheet as shown on the Plans. For
instances where substitution or alteration is required, the
Contractor shall seek for the Engineers approval. Tools and sealing
materials shall be of approved quality.Materials shall be protected
from damage during delivery to the site and should be stored in a
storage approved by the Engineer. Avoid putting heavy objects on
top of roofing or any act that will cause deformation to the
materials.6.13.3EXECUTIONRoofing shall not be applied during rain
or while surfaces are damp, it shall be applied only to surfaces
that are clean and dry. The Contractor shall protect the sheets
from damages during laying and subsequent operation and shall
replace at his own cost all damaged sheets to the satisfaction of
the Engineer.6.13.4MEASUREMENT/BASIS OF PAYMENTThe area covered
will be paid for based on the number of square meter measured or
based on the number square meters measured or based on the quantity
installed or can be made in lump sum in conformity with the plans
or as directed by the Engineer.The accepted quantities, measured as
prescribed above shall be paid for at the contract unit price for
each of the particular pay items listed and included in the Bill of
Quantities. The payment shall constitute full compensation for the
installed materials including all labor, equipment, tools and
incidentals necessary to complete the work prescribed in this
item.
ITEM 6.14MASONRY WORKS6.14.1 GENERAL6.14.1.1 DESCRIPTIONMasonry
works shall include the furnishing of all labor, material, and
equipment, and performing all operations necessary to execute all
concrete masonry construction, as specified.6.14.2 CONTRACTORS
SCOPEContractor shall make all preparations and do all work
necessary to receive and adjoin other work. He shall specify the
position of all dowels required for masonry on the construction
including foundations.6.14.3 MATERIAL REQUIREMENTS6.14.3.1 QUALITY
ASSURANCESpecification Referencesa. Portland Cement Philippine
Trade Standard, 661-01-02-1972b. Concrete Hollow Blocks Philippine
Trade Standard, 661-09-11, 1968c. Steel Reinforcement Bar
Philippine Trade Standard, 681-04-02, 1979Tolerancea. Masonry Units
shall be set plumb and true to line with level horizontal joints
within the following tolerances:- Variation from the plumb in the
lines and surfaces of columns, walls and arises- In adjacent
masonry units 3 millimeters- In 3 meters 6 millimeters- In any
story or 1 centimetersb. Variations of the linear building lines
from established positions of columns, walls and partitions:- In
any bay or 6 meters 105 centimeter- In 12 meters 2 centimetersc.
Joints- Nominal 1 centimeter- Maximum 1.5 centimeters6.14.3.2
PRODUCT DELIVERY, STORAGE AND HANDLINGMasonry Units shall be
handled in manner to avoid chipping, breaking and intrusion of
foreign matters. Units shall be stored separately as regards to two
type, straight, shape and size above ground on level platforms,
allow air circulation, and to protect from contact with soil. Units
shall be protected wetting prior use.Reinforcing bars shall be
delivered in bundles, tagged or separated for prompt
identification. Bars shall be stored in a manner to avoid excessive
rusting coating with grease, oil, dirt and objectionable materials
and shall be stock on kids or rocks.6.14.3.3CONCRETE
MASONRYConcrete masonry unit shall conform to Philippine Trade
Standard Specification 661-09-11 Type 1 with normal thickness as
indicated in the drawings. For exposed wall construction, the face
of units shall be equal and true, free of cracks, chips and other
imperfections.a. Hollow load bearing units shall be Class A with
compressive strength at 28 days as follows:Average of five tests800
psiIndividual tests1000 psib.Hollow non load bearings units shall
have compressive strength at 28 days as follows:Average of five
tests3000 psiIndividual tests3500 psic. Material Uses:Hollow non
bearing units shall be used for all non load bearing walls and
partitions not exceeding three (3) meters in height except that of
the option of the Contractor, load bearing units may be used in
lieu of non load bearing units. 6.14.3.4SPECIAL MASONRY
UNITSWhenever corner, corner return, control joint header, lintel
and bond beams, sash, jamb and sill are required, they shall be as
manufactured commercially to suit specification requirements.
Special masonry units shall be uniform texture and exposed surfaces
to match the masonry units and be free of cracks and broken
edges.Lintel and bond beams, and sill shall be fabricated from
three thousand (3000) psi compressive strength
concrete.6.14.3.5REINFORCEMENTReinforcement steel bars shall
conform to Philippine Trade Standard Specification 681 04 02, Grade
1 of sizes as indicated in the drawings. Splices shall be form by
lapping bars as shown and wire tying them. Splices in adjacent
horizontal bars shall be staggered. Reinforcement for lintel and
bond beams when not indicated shall not be less than two of twelve
(12) millimeters diameter bars.6.14.3.6MORTAR AND GROUTMortar shall
be mixed in the proportions of one part Portland cement and six (6)
parts sand and one fourth () liter of mortar Plasticizer
(Sealoplaz). Mortar materials shall be measured by volumetric
proportioning in approved containers that will ensure that the
specified proportions of materials will be controlled and
accurately maintained during the progress of the work. Measuring
materials with shovels will not permitted. Unless specified
otherwise, mortar shall be mixed in such a manner that the
materials will be distributed uniformly throughout the mass. A
sufficient amount of water shall be added gradually and the mass
further mixed, not less than three (3) minutes, until a mortar of
plasticity necessary for the purposes intended is obtained. Mortar
boxes, pans or mixer drums shall be kept clean and free of debris
and dried mortar. The mortar shall be used before the initial
setting of the cement has taken place. Reworking of mortar in which
cement has started to set will not be permitted.Grout shall consist
of a mixture of Portland cement conformed to Philippine Trade
Standard Specification 66-01-02, Type 1 and aggregate as specified
herein after. Water shall be added in sufficient quantity to
produce a fluid mixture. Fine grout shall be provided in grout
spaces less than two (2) inches in any horizontal dimension or in
which clearances between reinforcing and masonry is less than inch.
Coarse grout shall be provided in grout spaces two (2) inches or
greater in all horizontal dimensions and clearances between
reinforcement and masonry is less than three fourths () inch.Fine
grout shall be mixed in proportions in one part Portland cement and
three fourths () parts sand.Coarse grout shall be mixed in
proportions of one part Portland cement, three (3) parts sand, and
three (3) parts of gravel passing a 3/8 inch
sieve.6.14.4EXECUTION6.14.4.1INSPECTIONProper handling and storage
of material shall be verified and test reports and certificates
shall be checked before the start of concrete masonry unit work.
During installation, cracked or broken units shall be rejected.
Bond pattern and layout shall be checked to ensure minimum cutting
and breaking of bond units. Critical details such as control or
expansion joints and reinforcing bars shall be verified for proper
installation. Proper procedures shall be utilized during work
stoppage or between workdays. All finished wall surfaces shall be
cleared and ready for further protective
coating.6.14.4.2INSTALLATIONOnly dry masonry units shall be laid
not unless a different pattern in indicated, units shall be laid in
running bond pattern with vertical joints breaking on the center of
units, and wherever possible, full units of the proper sized shall
be used in lieu of cut units. Cutting and fitting where required to
accommodate the work by others shall be done by masonry mechanics
using power masonry saws. Unit shall be wet cut. All cut edges
shall be neat, true and sharp as possible. Units shall be laid with
full mortar coverage on horizontal and vertical faces shells except
that webs shall also be bedded in all starting courses on footings
and around cells that are to be reinforced and filled with grout.
One section of any wall shall not be carried up in advance of the
others. Horizontal reinforcement shall be deformed reinforcing
bars. Step back unfinished work for joining with new work. Toothing
shall not be permitted. Bolts, inserts, anchors and other built in
items shall be installed as work progresses. Cells containing
embedded items shall be solidly grouted.6.14.4.3REINFORCED
MASONRYUnits shall be laid with full head and bed joints in running
bond and laying shall be done so as to preserve the unobstructed
vertical continuity of cores to be filled. Cross webs adjacent to
vertical cores to be filled with grout shall be fully embedded in
mortar to prevent leakage of grout. Reinforcing shall be positioned
accurately as indicated and horizontal reinforcing shall be
embedded in grouts as laying proceeds. Only masonry units free from
chipped edges or other imperfections shall be laid for all exposed
masonry surfaces. All wall openings shall be provided with an
additional reinforcing bar all around the opening. Rebar shall be
twelve (12) millimeters in diameter when not indicated in the
plans. All mortar protruding into grout spaces shall be removed
prior to grouting. Cleanouts holes shall be provided at the bottom
of every core containing vertical reinforcement when grouting
height exceeds twenty four (24) inches. Cleanouts shall be plugged
after reinforcement and final cleaning of the grout spaces have
been completed. Backfill foundation walls seven (7) days after
grouting of cells have been completed.6.14.4.4JOINTINGJoints in
exposed masonry surfaces shall be tooled slightly concave, unless
indicated otherwise. Tooling rod shall be one half () inch minimum
size. Joints shall be tooled when the mortar is thumbprint hard.
Joint is concealed masonry shall be brushed to remove all loose and
excess mortar. Reinforced masonry foundation walls shall be
backfilled minimums of seven days after grouting of cell have been
completed.6.14.4.5LINTEL AND BOND BEAMSLintel and bond beams shall
consist of beam units reinforced as indicated but with not less
than two (2) of twelve (12) millimeters diameter bars where not
indicated, and shall be filled with grout, a wire mesh or small
mesh metal lash shall be placed under bond beam units to contain
grout within the spaces. Structural bond beams shall be continuous
at control joints and discontinuous at seismic and expansion
joints. Silts shall be set with only the ends bedded in mortar
remainder of silt joints shall be left open until painting. Slip
type sills shall be set in full mortar bed. Vertical joints in
sills shall be pointed with mortar. Sills shall have drip grooves
on underside where units overhang the walls.6.14.4.6CONTROL
JOINTSControl joints on masonry walls shall be provided as
indicated. Seating of control joints shall be specified somewhere
in this specification.6.14.4.7POINTING AND CLEANINGAll holes in
exposed masonry surfaces shall be pointed. All defective joints
shall be cut out and truck point solid with mortar. Excess loose
mortar shall be removed from all exposed masonry and finished
masonry surface shall be left free from loose mortar and stains.
All exposed surfaces of masonry shall be cleaned from the top down
with either a solution of trisodium phosphate and household
detergent or muriatic acid and clean water. Surfaces shall be free
from mortar stain, drippings, efflorescence and other foreign
substances.Cleaning shall be as follows:a. Wet walls thoroughly
before applying solutionb. Scrub walls with stiff fiber brushesc.
Apply cleaning solution in the following proportion: - One half ()
cup trisodium phosphate and one half () cup household detergent
dissolve in one (1) gallon (3.78 liters) of clean water - One part
commercial grade of muriatic acid to nine parts of clean waterd.
Rinse surfaces with clean water.6.14.4.8PROTECTION OF COMPLETED
WORKStaining of masonry facing shall be prevented immediately by
removing any misplaced grout or mortar. All sills, ledges and
offsets shall be protected from mortar droppings or other damages
during construction.6.14.5MEASUREMENT/BASIS OF PAYMENTThe accepted
quantities, measured as prescribed above shall be paid for at the
contract unit price for each of the particular pay items listed and
included in the Bill of Quantities. The payment shall constitute
full compensation for the installed materials including all labor,
equipment, tools and incidentals necessary to complete the work
prescribed in this item.
ITEM 6.15 DRAINAGE CANAL6.15.1 GENERAL6.15.1.1 DESCRIPTIONThis
item is applicable for the construction and installation of with
non-reinforced slip-formed concrete lined field ditches, canals and
laterals. The field ditches, canals and laterals shall be
constructed at the location and to the dimensions as shown in the
plan.6.15.2 MATERIAL REQUIREMENTS6.15.2.1 CONCRETEa.Concrete mixes
shall be composed of Portland cement, fine and coarse aggregates
and water. The mix shall be submitted to the Engineer or his
representative prior to construction. The final strength of the
concrete mix shall be a minimum of 3,000 psi. The slump shall be
one (1) to three (3) inches maximum and shall not move after being
placed. Nine (9) bags of cement per cubic meter of concrete is
required.b. The course and fine aggregates shall conform to the
durability and gradation requirements of ASTM Specification C 33
and the potential reactivity of aggregates with the alkalis in
cement shall also conform to the requirement in ASTM Specification
C 33, Appendix A1. Aggregate of each class and size shall be stored
and handled by methods that prevent segregation of particle sizes
or contamination by intermixing with other materials. The maximum
size of the aggregate shall be three fourths () inch unless
otherwise stated on the drawings.c. Portland Cement shall conform
to the requirements of ASTM Specification C 150 for the specified
types of cement. Type I or Type II cements shall be used, unless
another type is specified on the drawings. Cement shall be stored
so that it is protected from weather, dampness or other destructive
agencies. Cement that is partially hydrated or otherwise negatively
affected will be rejected.d. Water shall be clean and free from
harmful chemicals6.15.3 EXECUTION6.15.3.1 SITE PREPARATIONThe
foundation area shall be cleared of vegetation, inorganic material
and rocks with a dimension greater than two (2) inches. The fill
material shall be placed in horizontal layers with a maximum lift
of four (4) inches before compaction. The moisture content of the
fill material shall be adequate so that a firm dense foundation can
be achieved. Fill section with a height of two (2) feet or greater
will be constructed using the compaction requirements of AASHTO for
Earth Fill. Other compaction methods may be used if the fill
sections are allowed seasonal consolidation for at least six (6)
month period and are approved by the Engineer or his
representative.6.15.3.2 CONSTRUCTIONa. FoundationThe foundation
surface for all concrete lining shall be moist when the concrete is
placed. The concrete shall not be placed on mud, excessively dry
soil, non-compacted fill, ice, frozen soil or soil containing
vegetation or other debris.b. Mixers or Mixing Concrete may be
furnished by batch mixing at the work site or by ready-mix
methods.c. Placement Slip-forms shall be operated to achieve a
uniform thickness of the concrete lining. The thickness of the
lining shall be detailed on the drawings, but in no case less than
two (2) inches.d. Control and Construction Joints Control joints
shall be one fourth () inch wide perpendicular of the concrete
lining, at a depth equal to one third (1/3) of the lining thickness
with a uniform spacing not to exceed ten (10) feet. Construction
joints shall be the butt type, formed square with the lining
surface and at right angles to the ditch or canal. Control and
construction joints shall have smooth finishes.e. Curing The
concrete shall be cured for not less than five (5) days using of
method impounding water over the exposed surface after the initial
set up of the concrete.6.15.3.3 ACCEPTANCEThe final acceptance of
the work will be by inspection and to conformance to the
requirements of this construction specification and the
accompanying design. Construction operations shall be performed in
such a manner that erosion, air, and water pollution shall be
minimized. National and local laws concerning pollution abatement
must be followed.6.15.4MEASUREMENT/BASIS OF PAYMENTThe accepted
quantities, measured as prescribed above shall be paid for at the
contract unit price for each of the particular pay items listed and
included in the Bill of Quantities. The payment shall constitute
full compensation for the installed materials including all labor,
equipment, tools and incidentals necessary to complete the work
prescribed in this item.
ITEM 6.16 DOORS AND WINDOW6.16.1 GENERAL6.16.1.1 DESCRIPTIONThis
item includes all labor, materials, equipment, tools and processes
necessary for furnishing, fabrication and installation of all metal
doors, window/louvers and accessories as shown on the Drawings and
as specified herein. Installation method shall be in accordance
with standard specifications6.16.2 SUBMITTALSSubmit shop drawings
of all metal windows and louvers for approval.No work shall be
started until the Engineer has approved all shop drawings.6.16.3
MATERIAL REQUIREMENTS6.16.3.1 PRODUCT DELIVERY AND STORAGEProducts
shall be protected and kept under cover both during transmit and at
the jobsite.6.16.3.2 QUALITY ASSURANCEAll metal windows and louvers
shall be products of reputable manufacturer and are approved by the
Engineer.Applicable standards and specifications specified in item
related to structural steel somewhere in this specification shall
hold wherever applicable.6.16.4EXECUTION6.16.4.1 FABRICATION AND
MANUFACTUREUnless otherwise indicated, all window frames shall be
constructed to withstand a minimum two hundred twenty four (224)
kilogram per square meter wind load with the sashes or blades in
closed positioned.Windows shall be designed foe glazing from
outside with continuous glazing beads.All steel used to manufacture
doors, frames, anchors, and accessories shall conform to ASTM
A1008, Standard Specification for Steel Sheet, Cold-Rolled, Carbon,
Structural, High-Strength Low-Alloy and High-Strength Low-Alloy
with Improved Formability and A 568. General Requirements for
Standard Specification for Steel Sheet, Carbon, and High-Strength,
Low-Alloy, Hot -Rolled and Cold-Rolled.6.16.4.2 STEEL CASEMENT
WINDOW-Windows members shall be hot-rolled, low carbon, new billet
steel.-Frame and vent sections shall be zee bars not less than 1
inch in depth with web thickness of not less than four (4)
millimeters (5/32 inch)-Corners of frames and vents shall be
mitered, electrically butt-welded and forged after welding to
ensure correct alignment. Mountings shall be nineteen and one
tenths (19.1) millimeter (3/4 inch) by nineteen and one tenths
(19.1) millimeter (3/4 inch) minimum size tee bars and shall be
attached to frame or vent members by means of mortis and tendon
joints, electricity hot-riveted.-Mounting intersections shall be of
the interlocking design.-Outward opening side-hung casements shall
be hung on forged steel hinges, welded to the frame and riveted to
vent members.-Hinges shall be of the extended friction type and
have bronze to steel contract surfaces throughout. Hinge pins shall
be bronze.-Double, full contact weathering shall be provided
between vents and frames around the perimeter of each
vent.-Casements vents shall be equipped with bronze cam candles.
Handles shall be designed for secure attached to ventilators and
shall affect tight closure of vents when locked.-Casements vents
shall be held securely in open positioned by means of bronze peg
stay.-Projected type steel windows shall be bonderized and then
given one shop coat of approved gray metallic priming paint before
delivery to site.6.16.4.3 METAL LOUVERS-Metal louvers shall be of
the fixed type fabricated from galvanized steel sheets to shapes
and sizes and indicated.-Louvers frames and blades shall be heavily
zinc-coated steel sheet.-The blades shall be gage eighteen (18) and
the frames shall not be less than gage fourteen (14). Blades shall
be accurately fitted and firmly secured to the frames. The edges of
all louvers blades shall be folded or beaded for rigidity.6.16.4.4
FIRE DOORS AND FRAMESManufacturers shall provide the type of the
fire doors and frames assembly that has been investigated and/or
successfully fire tested in accordance with the latest revision of
ANSI/UL 10B, Fire Tests of Door Assemblies, ANSI/UL10C, Positive
Pressure Fire Tests of Door Assemblies, or ANSI/NFPA 252, Fire
Tests of Door Assemblies.6.16.4.5 PRIME FINISHDoors and frames
shall be thoroughly cleaned and chemically treated to insure
maximum paint adhesion. All surfaces of the door and frame exposed
to view shall receive a factory applied coat of rust inhibiting
primer, either air-dried or baked-on. The finish shall meet the
requirements for acceptance stated in ANSI/SDI A250.10. Test
Procedure and Acceptance Criteria for Prime Painted Steel Surfaces
for Steel Doors and Frames.6.16.4.6FACTORY APPLIED FINISH PAINTWhen
specified, doors and frames shall be finish painted on all surfaces
of the door and frame exposed to view. The factory applied finish
paint shall meet the performance requirements and acceptance
criteria as stated in ANSI/SDI A250.3, Test Procedure and
Acceptance Criteria for Factory Applied Finish Painted Steel
Surfaces for Steel Doors and Frames. Consult individual
manufacturers for product availability and color selection.
6.16.4.7TOLERANCESSDI-117, Manufacturing Tolerances for Standard
Steel Doors and Frames shall apply to the standard steel doors and
frames specified.6.16.4.8WINDOW SCREEN (LOUVER)- Corners of screen
frames shall be mitered, reinforced and welded.- Frames shall be
secured to window units by using clips or swivel clips to permit
easy removal.- All aluminum members coming in contact with
dissimilar metals and materials by the application of asphalt
paint.6.16.4.9INSPECTIONWindow and louvers shall be checked for
warp and weave if necessary.No work shall start until
unsatisfactory conditions are
corrected.6.16.4.10INSTALLATIONWindows and louvers shall be
installed plumb and square without springing or forcing and
securely anchored to walls.The complete installation shall be
rainproof and weather tight.6.16.5 MEASUREMENT/BASIS OF PAYMENTThe
accepted quantities, measured as prescribed above shall be paid for
at the contract unit price for each of the particular pay items
listed and included in the Bill of Quantities. The payment shall
constitute full compensation for the installed materials including
all labor, equipment, tools and incidentals necessary to complete
the work prescribed in this item.
ITEM 6.17 PLUMBING WORKS6.17.1 GENERAL6.17.1.1 DESCRIPTIONThis
item shall consist of furnishing all materials, tool, equipment and
fixtures required as shown on the plans for the satisfactory
performance of the entire plumbing system including installation in
accordance with the latest edition of the National Plumbing Code of
the Philippines, and this specification.6.17.1.2SCOPE OF WORKUnless
otherwise specified, the Contractor shall furnish all materials,
tools, equipment, apparatus, appliances, accessories,
transportation, labor and supervision required for the complete
installation and testing of the Plumbing Systems ready for use in
accordance with the best practice of the Plumbing Trade as listed
herein but not limited to the following:a.The Contractor shall
refer to all architectural, structural, mechanical, fire protection
and electrical plans and investigate all possible interference and
conditions affecting his work.
b.All work shall comply with the pertinent provision of the
Plumbing Code of the Philippines, National Pollution Control
Commission, Ordinances of concerned city or municipality and the
Code of Sanitation of the Philippines.c.Water supply and
distribution system for the building, including supply and
installation of water tank and pumps piping.d.All building sanitary
drains waste and venting systems including floor drains, and AC
drains.e.Sewage collection and disposal system such as tapping to
the existing sewage manhole or sewer line.f.Building storm drainage
system including deck roof drains, canopy drains, and plant boxes
drains.g. Building storm drains and collection system including
peripheral collector line into storm manhole or sump pits and up to
existing storm drains.h.Testing for leakage of all water supply and
distribution system, drains, waste, sewer and venting system plus
pressure testing and disinfection of the water supply and
distribution system.i.Test run of transfer, booster and sump pumps
and other equipment under Plumbing Works.j.Securing of all permits
and licenses as required to include water connection.k.Excavation
and backfilling in connection with the work shall be
included.l.Preparation and submittal of two (2) sets of as built
plans.m.Furnish of written one (1) year warranty on the plumbing
system.6.17.2 MATERIAL REQUIREMENTSAll piping materials, plumbing
fixtures and fitting accessories whether specifically mentioned or
not but necessary to complete this item shall be furnished and
installed.6.17.2.1 PRODUCTSExcept as specified, the Contractor
shall submit for the Engineer's approval, four (4) copies of a
complete list of manufacturer's names of all equipment and
materials he proposes to use, within thirty (30) days after award
of contract.The Contractor shall assume the cost of and the entire
responsibility for any change in the work as shown on contract
drawings which may be occasioned by approval of materials other
than those specified.The following shall be the schedule for
plumbing materials:a.Pipes and Fittings1.Cold Water Lines - shall
be Polypropylene Random Pipe, PPR Pipe PN 16.2.Sewer line - shall
be Polyvinyl Chloride (PVC) pipe, series 1000 II high Impact.3.Vent
Pipe - shall be polyvinyl chloride (PVC) pipe, series
600.4.Downspouts - shall be polyvinyl chloride (PVC) pipe, series
1000 II.5.Storm Drainage Lines - shall be polyvinyl chloride (PVC)
pipe, series 1000 II or reinforced concrete pipe
(RCP).b.Valves1.Gate Valve fifty (50) millimeter and larger, shall
be rising stem iron body with bronze trim, flanged connection,
minimum of one hundred fifty (150) psig working pressure. Fifty
(50) millimeter and smaller, shall be non-rising stem, all bronze,
female threaded, minimum of one hundred fifty (150) psig working
pressure.2.Check Valve - fifty (50) millimeter and larger shall be
iron body with bronze trim, flanged connection, minimum of one
hundred fifty (150) psig working pressure. Fifty (50) millimeter
and smaller will be the same except female threaded connection.
3.Float Valve - shall be the float and lower type globe valve,
single seated-tight closing, bronze or iron material, flanged
connection, with float.c.Drains1.Roof/Deck Drain/Parapet Drain as
per approved material.2.Scupper Drain (Tank Drain) as per approved
material.3.Floor Drain for Toilets as per approved material4.Floor
Drain for Toilets as per approved material.5.Canopy Drain as per
approved material.6.Area Drain Grating Cover as per approved
material.d.Hose Bibbs twenty (20) millimeter standard hose
connection, male tape-red threads, polished chromium
plated.e.Outdoor Pipe Lines and Appurtenances1.Concrete Drain Pipes
(CDP) / Reinforced Concrete Drain Pipes (RCDP) - as per
Manufacturers Standards.2.Thrust Blocks one hundred forty (140)
kilogram per square centimeter reinforced
concrete.3.Area-Drain-Catch Basin - one hundred forty (140)
kilogram per square centimeter reinforced concrete.4.Drainage
Junction Boxes - one hundred forty (140) kilogram per square
centimeter reinforced concrete with pre-cast reinforced concrete
cover.5.Cistern two hundred ten (210) kilogram per square
centimeter reinforced concretef.Jointing1.Flanged Joint Gasket as
per approved material2.Screwed Joints - U.S. Federal Specifications
GG-P-251.
3.PVC Pipes and Fittings - PVC cement or as per the
Manufacturers recommendations.4.Cast Iron Soil Pipes (B&S) -
Oakum and lead (99% purity).5.Dissimilar Pipes - Adaptor fittings
shall be used.6.Concrete Drain Pipe - Cement mortar.6.17.2.2 CAST
IRON, uPVC, SOIL AND WASTE PIPES FITTINGSPipes and fitting
materials shall comply with the specification requirements defined
in the National Plumbing Code. The material description and
standards of manufacture are herein described:a. Unplasticized
Polyvinyl Chloride (uPVC). The pipe shall be made of rigid plastic
which shall be sound, free from cracks and holes. The rigid plastic
material shall permit drilling and cutting by using hacksaw blade
without cracking or breaking.b. Quality of Plastic The plastic
material shall be made of Polyvinyl Chloride which is resistant to
rust and corrosion.c. Manufacture The pipes shall be made with hub
and spigot ends or hub ends only. All hubs for pipes and fittings
shall be made to fit with each other. Use PC solvent to connect
pipes and fittings. Only plastic pipes produced by manufacturers
that are costumer trusted are allowed for the project.d. Freedom
from Defects Pipes and fittings shall be true, smooth and
cylindrical, their inner and outer surfaces being as nearly
concentric as practicable. They shall be in all aspects, sound and
good casting free from laps, pin holes or other imperfections.
Clean-outs shall be made of uPVC with counter sunk screw cover same
diameter as the pipe except that they shall not be larger than one
hundred (100) millimeter diameter.6.17.2.3 Water Supply Pipes and
FittingsPipesPipes shall be galvanized iron pipe schedule forty
(40) conforming to specification requirements defined in ASTM A 120
with threaded connection. Under roads where necessary pipes shall
be suitably protected as shown on the plans.Fittings shall be
malleable iron type II, galvanized iron conforming to specification
requirements defined in ASTM 1 338.ValvesValves for water supply
shall be bronze body with threaded ends rated twenty one (21)
kilogram per square centimeter. All valves shall be gate valves
unless otherwise specified. Gate valves shall have solid wedge body
and discs conforming to specification requirements defined in ASTM
B 62. Globe valves shall have plug type discs with ferrule threaded
ends and bronze body.UnionsUnions on ferrous pipe fifty (50)
millimeters in diameter and smaller shall be malleable iron.Water
MeterWater meter where required to be furnished by the Contractor
shall be of the type tested and approved by MWSS.6.17.2.3 APPROVED
ALTERNATE PIPES AND FITTINGSPipes and fittings for sanitary and
potable water lines as approved alternate shall be unplasticized
Polyvinyl Chloride (uPVC) Pipes and Fittings.Pipes and fittings
shall be made of virgin materials conforming to specification
requirements defined in ASTM d 2241 and Philippine National
Standards (PNS) 65: 1986. Fittings shall be molded type and
designed for solvent cement joint connection for water lines and
rubber O-ring seal joint for sanitary lines.6.17.2.4 SEPTIC TANKThe
septic tank shall be provided as shown on the plans including all
pipe vents and fittings. The various construction materials such as
concrete masonry work shall conform to the corresponding items of
this specification. Inlet and outlet pipes shall conform to the
latest edition of the National Plumbing Code.6.17.2.5 PLUMBING AND
FIXTURESAll fittings and trimmings for fixtures shall be
chromium-plated and polished brass unless otherwise approved.
Exposed traps and supply pipes for fixtures shall be connected to
the roughing in, piping system at the wall unless otherwise
indicated on the plans. Built in fixtures shall be watertight with
provision of water supply and drainage outlet, fittings and trap
seal. Unless otherwise specified, all plumbing fixtures shall be
made of vitreous china complete with fittings.a. Water closet shall
be vitreous china, free standing toilet combination, round front
bottom outlet siphonic wash down bowl with extended rear self and
closed coupled tank with cover complete with fittings and mounting
accessories. Model make and color shall be submitted for approval
prior to delivery at jobsite by the Engineer.b. Lavatory shall be
vitreous china, wall-hung with near overflow and cast-in soap
dishes, pocket hanger with integral china brackets, complete with
twin faucets, supply pipes, P-trap and mounting accessories. Where
indicated on the plans to be counter top model make and color shall
be approved by the Engineer.c. Urinal shall be china vitreous,
wall-hung wash-out urinal with extended shields and integral flush
spreader, concealed wall-hanger pockets, nineteen (19) millimeter
top spud complete with fitting and mounting accessories. Model make
and color shall be approved by the Engineer.6.17.2.6 TOILET
ACCESSORIESa. Grab bars shall be made of tubular stainless steel
pipe provided with safety grip and mounting flange.b. Floor drains
shall be made of stainless steel beehive type, measuring one
hundred (100) millimeters by one hundred (100) millimeters, and
provided with detachable stainless strainer, expanded metal lath
type.c. Toilet paper holder shall be vitreous china wall mounted.
Color shall reconcile with the adjacent fixture and facing tiles.d.
Soap holder shall be vitreous china wall mounted. Color shall
reconcile with the adjacent tile works.e. Faucets shall be made of
stainless steel for interior use.f. Hose bib shall be made of
bronze cast finish.6.17.2.7 ROOF DRAINS, DOWNSPOUT, OVERFLOW PIPES
AND STEEL GRATINGThe Contractor shall provide, fit and or install
necessary drains with strainers, were shown on the plans. Each
drain with strainer shall fit the size of the corresponding
downspout (or roof leader) over which it is to be installed and in
conformity with the following schedule.a. Scupper drains (for
balconies, parapet) shall be made of bronze base with flashing.
Flange threaded outlet and convex with integral flashing clamp
bolted to flange.b. Josam type drains shall be made of bronze base
semi-dome with large free area, flashing clamp and integral gravel
stopper. To be used at roof decks, canopies, gutters, and elsewhere
indicated in the plans.c. Downspouts when encased in concrete,
unless otherwise shown on the plans shall be polyvinyl chloride
(PVC). Whether indicated or specified to be cast iron or galvanized
iron, the same shall meet the specification requirements as herein
described.d. Overflow pipes shall be made of galvanized iron pipe
measuring at least thirteen (13) millimeter diameter and spaced two
hundred (200) millimeter on center.e. Steel grating shall be made
of wrought iron metals of design on shop drawings approved and
surface to be coated with shop finish.6.17.2.8 FIRE PROTECTED
SYSTEMFire extinguisher shall be portable, suitable for Class A, B,
C fires, mounted inside cabinet. Cabinet shall be full flush
mounting door with aluminum trim for glass plate; frame and box
shall be made of gauge fourteen (14) galvanized iron sheets with
white interior and red exterior baked enamel finish over primer.
Cabinet to be wall mounted and size to be able to accommodate the
defined components.6.17.3 EXECUTIONThe Contractor before any
installation work is started shall carefully examine the plans and
shall investigate actual structural and finishing work condition
affecting all his work. Where actual condition necessitates a
rearrangement of the approved pipe layout, the Contractor shall
prepare plans of the proposed pipe layout for approval by the
Engineer.6.17.3.1 INSTALLATION OF SOIL, WASTE, DRAIN AND VENT
PIPESa. All uPVC soil and drainage pipes shall be pitched six (6)
millimeter per three hundred (300) millimeter but in no case
flatter than three (3) millimeter per three hundred (300)
millimeter.b. Horizontal lines shall be supported by well secured
length heavy strap hangers. Vertical lines shall be secured
strongly by hooks to the building frame and suitable brackets or
chains shall be provided at the floor from which they start.c. All
main vertical soil and waste stacks shall be extended full size to
and above the roof line to act as vents, except otherwise indicated
on the plans.d. Vent pipes in roof spaces shall be run as close as
possible to underside of roof with horizontal piping pitched down
to stacks without forming traps. Vertical vent pipes may be
connected into one main vent riser above the highest vented
fixtures.e. Where and end or circuit vent pipe from any fixtures is
connected to a vent line serving other fixtures, the connections
shall be at least one and two tenths (1.2) meter above the floor on
which the fixtures are located.f. Horizontal waste line receiving
the discharge from two or more fixtures shall be provided with end
vents unless separate venting of fixtures is noted on the plans.g.
All changes in pipe sizes on soil and waste lines shall be made by
appropriate use of forty five (45) degrees wyes; half wyes, long
sweep quarter bends or elbows may be used in soil and waste lines
where the change in direction of flow is from the horizontal to the
vertical and on the discharge from waste closets. Where it becomes
necessary to use short radius fittings in other locations, the
approval of the Engineer shall be obtained prior to installation of
the same.h. All joints fully applied with PVC solvent to secure
connectionsi. Cleanouts at the bottom of each soil stack, waste
stack, interior downspout and where else indicated shall be the
same size as the same pipe up to and including one hundred two
(102) millimeter and one hundred fifty two (152) millimeter, for
larger pipes.j. Vent pipe shall be flashed and made watertight at
the roof with ferrule lead sheet. Flashing shall be turned down
into pipes.k. Each fixtures and place of equipment requiring
connection to the drainage system except near to the fixture as
possible.l. Trap installed on threaded pipe shall be recessed
drainage pattern.m. Overhead horizontal runs of pipes shall be hung
with approved material spaced not over three and four hundredths
(3.04) meter apart except hub and spigot soil which shall have
hanger spaced not over one and five tenths (1.5) meter apart and
located near a hub.6.17.3.2 WATER PIPES, FITTINGS AND
CONNECTIONSAll water piping inside the building and underground,
one hundred (100) millimeter diameter and smaller shall be
galvanized iron threaded pipe with malleable iron fittings.a. The
water piping shall be extended to all fixtures, outlets, and
equipment from the gate valves installed in the branch near the
riser.b. The cold water system shall be installed with a fall
towards a main shutoff valve and drain. Ends of pipes and outlets
shall be capped or plugged and left ready for future
connections.
c. Mains and Branches - All pipes shall be cut accurately to
measurements and shall be worked into place without springing or
forcing. Care shall be taken so as not to weaken the structural
portions of the building.- All piping above the ground shall be run
parallel with lines of the building unless otherwise indicated in
the Plans.-All service pipes, valves and fittings shall be kept at
sufficient distance from other work to permit finished covering on
the different service.- No water piping shall be buried in floors,
unless specifically indicated on the Plans and approved by the
Engineer.-Changes in pipes shall be made with reducing fittings.d.
Drain Cocks Pipe drain indicated on the drawings shall consist of
twelve (12) millimeters globe valve wit renewable disc and
installed at low points on the cold water piping so that all piping
shall have a slope ten (10) meters in thirty and five tenths (30.5)
meters.e. Threaded Pipe Joints All pipes shall be reamed before
threading. All screw joints shall be made with graphite and oil or
with an approved graphite compound applied to make threads only.
Threads shall be full cut and not more than three threads on the
pipe shall remain exposed.f. Expansion and Contraction of Pipes
Accessible contraction-expansion joints shall be made whenever
necessary. Horizontal runs of pipe over fifteen (15) meters in
length shall be anchored to the wall to the contraction equally
toward the ends of as shown on the Plans.g. Valves and Hose Bibs-
Valves shall be provided on all supplied fixture as herein
specified.- The cold water connections to the domestics hot water
heater shall be provided with gate valves and the return
circulation connection shall be provided gate and check valve.- All
connection to domestic hot water heaters shall be equipped with
unions between valve and tanks.- Valve shall not be installed with
its stem below the horizontal. All valves shall be gate valves
unless otherwise indicated on the Plans.- Valves up to and
including fifty (50) millimeters diameter shall be threaded ends,
rough bodies and finished trimmings, except those on chromium
plated brass pipe.- Valves sixty three (63) millimeters in diameter
and larger shall have iron bodies, brass mounted and shall have
either screws of flange ends.- Hose bibs shall be made of brass
with twelve and five tenths (12.5) millimeters inlet threads,
hexagon shoulders and nineteen (19) millimeters male.6.17.3.3
FIXTURES, EQUIPMENT AND FASTENINGSa. All fixtures and equipment
shall be supported and fastened in a safe and satisfactory
workmanship as practiced.b. All fixtures, where required to be wall
mounted on concrete or concrete hollow block wall, fastened with
brass expansion bolts. Expansion bolts shall be six (6) millimeters
diameter with twenty (20) millimeters threads to twenty five (25)
millimeters into solid concrete, fitted with loose tubing or
sleeves of proper length to acquire extreme rigidity.c. Insert
shall be securely anchored and properly flushed into walls. Inserts
shall be concealed and rigid.d. Bolts and nuts shall be horizontal
and exposed. It shall be provided with washers and chromium plate
finish.6.17.3.4 PIPE HANGERS, INSERTS AND SUPPORTSa. Pipe hangers
shall be made of approved materials spaced not more than three (3)
meters apart for horizontal runs or pipe, except hub and spigot
soil pipe which shall have hangers spaced not over one and five
tenths (1.5) meters apart located near the hub.b. Chains, straps
perforated turn-buckles may be omitted for hangers on soil or waste
lines or individual toilet rooms to maintain stacks when spaced
does not permit.c. Trapeze hangers may be used in lieu of separate
hangers on pipe running parallel to and close to each
other.6.17.3.5 PROTECTION AND CLEANINGa.During installation of
fixtures and accessories and until final acceptance, protect items
with strippable plastic or other approved means to maintain
fixtures in perfect conditions.b. All exposed metal surfaces shall
be polished clean and rigid of grease, dirt or other foreign
materials upon completion.c. Upon completion, thoroughly clean all
fixtures and accessories to leave the work in polished
condition.6.17.3.6 INSPECTION, WARANTY TEST AND DISINFECTIONAll
pipes, fittings, traps, fixtures, straps, appurtenances and
equipment of the plumbing and drainage system shall be inspected
and approved by the Engineer to insure compliance with all
requirements of all codes and regulations referred to in this
specification.6.17.3.6.1 DRAINAGE SYSTEM TESTa. The entire drainage
and venting system shall have all necessary openings which can be
plugged to permit the entire system to be filled with water to the
level of the highest stack vent above the roof.b. The system shall
hold this water for full thirty (30) minutes during which time
there shall be so drop greater than one hundred two (102)
millimeterc. Where only portion of the system is to be tested, the
test shall be conducted in the same manner as described for the
entire system except that a vertical stack three (3) meters highest
horizontal line to be tested may be installed and filled with water
to maintain sufficient pressure of water pump may be used to supply
the required pressure.d. If and when the Engineer decides that an
additional test is needed, such as an air to smoke test on the
drainage system, the Contractor shall perform such test without any
additional cost.6.17.3.6.2 WATER TEST ON SYSTEMa. Upon completion
of the roughing-in and before connecting fixtures the entire cold
water piping system shall be tested at a hydrostatic pressure one
and one half (1 ) times the expected working pressure in the system
during operation and remained tight and leak-proofed.b. Where
piping system is to be concealed, the piping system shall be
separated in a similar manner to that described for the entire
system with the presence of the Engineer or his duly designated
representative.6.17.3.6.3 DEFECTIVE WORKa. All defective materials
replaced and tested will be repeated until satisfactory performance
is attainedb. Any material replaced for the satisfactory
performance of the system made shall be at the expense of the
Contractor.6.17.3.6.4 DISINFECTIONa. The entire water distribution
system shall be thoroughly flushed and treated with chloride before
it is operated for public use.b. Disinfection materials shall be
liquid chlorine of hypochlorite and shall be introduced in a manner
approved as practiced by the Engineer into the water distribution
system.c. After a contact period of not less than sixteen hours,
the heavenly chlorinated water shall be flushed from the system
with potable water.d. Valves for the water distribution system
shall be opened and close several times during the sixteen (16)
hours chlorination treatment is done.6.17.3.7
SUBSTITUTIONSMaterials intended to be substituted for those
originally specified shall be accepted only after a formal request
for substitution, accompanied by reason for substitutions in
writing. Upon completion of the work, the Contractor shall submit
two sets of prints with all as-built changes shown on the drawings
in a neat workmanship manner. Such prints shall show changes or
actual installation and conditions of the plumbing system in
comparison with the original drawings.6.17.3.8
MISCELLANEOUS6.17.3.8.1 CLEANOUTSCleanout shall be of the same size
as the pipe, the location of which is extended to an easily
accessible place.6.17.3.8.2 TRAPSEvery plumbing fixtures or
equipment requiring connection to the drainage system shall be
equipped with a trap.Each trap shall be placed as near as possible
to the fixture. No fixture shall be double-trapped.6.17.3.8.3VALVES
AND HOSE BIBSValves shall be provided on all water supplies to
fixture as specified.Hose bibs shall be made of brass with fifteen
(15) millimeter male inlet threads hexagon shoulders and twenty
(20) millimeter connections.6.17.3.8.4 HANGERS AND
SUPPORTSHorizontal runs of pipe shall be hung with adjustable
wrought iron or malleable iron pipe hangers spaced not over three
(3) meters apart, except hub and spigot soil pipes which shall have
hangers spaced not over one and fifty two hundredths (1.52) meters
apart and located near the hub.Hangers shall have short turnbuckles
or other approved means of adjustment.Inserts shall be of cast
steel and shall be of type to receive a machine bolt or nut after
installation.Vertical runs of pipe shall be supported by wrought
iron clamps, or collars spaced not more than nine (9) meters
apart.Water and Vent Pipe sixty five (65) millimeter and larger;
band type six and four tenths (6.4) millimeter by twenty five (25)
millimeter flat mild steel or black iron with 15mm round rod with
plates and nuts; fifty (50) millimeter and smaller split ring type
with ten (10) millimeter iron rods with inserts plates; toggle
bolts, clamps or expansion shield.6.17.3.8.5 PIPE SLEEVESPipe
sleeves shall be installed and properly secured in place at all
points where pipes pass through masonry or concrete.Pipe sleeves
shall be of sufficient diameter to provide approximately six and
four tenths (6.4) millimeter clearance around the pipe or
insulation.Pipe sleeves in walls and partitions shall be of cast
iron, wrought iron or steel pipe. Pipe sleeves in concrete beams or
concrete slabs shall be wrought iron or steel pipe.Where pipes pass
through waterproofing membrane, the sleeves shall be provided with
an integral flange or clamping device to which a flashing shield
can be soldered.The space between the pipes and sleeves shall be
made water tight by inserting a packed oakum gasket and filling the
remaining space with poured lead caulking thoroughly6.17.4
MEASUREMENT/BASIS OF PAYMENTThe work done under this item shall be
quantified per length and/or number of units as provided in the
Bill of Quantities, tested and accepted to the satisfaction of the
Engineer.The accepted quantities, measured as prescribed above
shall be paid for at the contract unit price for each of the
particular pay items listed and included in the Bill of Quantities.
The payment shall constitute full compensation for the installed
materials including all labor, equipment, tools and incidentals
necessary to complete the work prescribed in this item.
ITEM 6.18 VENTILATION AND AIR CONDITIONING6.18.1 GENERAL6.18.1.1
DESCRIPTIONThe work to be undertaken under this item shall consist
of furnishing of all materials, labor, equipment, and other
facilities necessary for the complete installation, testing and
operation of the Ventilation and Air Conditioning Units. The system
shall include the following:a. Ventilating system of the machine
hall and high voltage room, providing adequate air circulation of
the entire system- Four (4) units of Air Exhaust Fans rated one (1)
horsepower each.- Two (2) units of Air Exhaust Fans rated five
tenths (0.5) horsepower each.b. Control Room Air-Conditioning
System- Two (2) units of Split Type Air-Conditioning units rated at
two (2) horsepower and with a capacity of one and five tenths (1.5)
tons each. The units shall be CARRIER or approved equal.c. Any
other work required for the complete operation of the ventilation
and air conditioning system.6.18.1.2 GENERAL REQUIREMENTSa.
Material and equipment furnished under this specifications shall be
standard products of manufacturers regularly engaged in the
production of such materials or equipment and shall be
manufacturers latest standard design.b. Defective equipment of
fixtures, or equipment of fixtures damaged in the course of
installation or testing shall be replaced or repaired by the
Contractor in the manner approved by the Engineer.c. If departures
from the contract drawings are deemed necessary by the Contractor,
details of such departures, including charges in related portions
of the work, and the reasons therefore shall be submitted, as soon
as practicable after contract award, to the Engineer for written
approval. Approved departure shall be made at no additional cost to
the Employer.6.18.2 SUBMITTALSa. Before starting installation, the
Contractor shall submit to the Engineer for approval, layout
drawings and lists of materials, fixtures and equipment to be
incorporated in the work. The list of materials and equipment shall
be supported by sufficient descriptive materials, such as catalogs,
cuts, diagrams and other data published by the manufacturer to
demonstrate conformance to the specification requirements.b.
Sampling shall be the responsibility of the Contractor. If a sample
fails to meet specification requirements, the material or equipment
represented by the sample shall be replaced by the Contractor at no
additional cost to the Employer.c. The employer shall be provided
with three (3) bound copies AS BUILT diagrams, shop drawings, part
list, serial number and inventory equipment including manufacturers
operating and maintenance manual for the Employers future
reference. All standard tools and equipment shall be furnished for
proper and regular maintenance of installed equipment.6.18.3
MATERIAL REQUIREMENTSMaterials, fixtures and equipment shall
conform to the respective publications and requirements specified
herein. Fixtures and equipment differing in minor respects from the
specified may be proposed provided such differences are clearly
indicated on the data submitted for approval. If the Engineer
judges the products to be equal to or better than the specified,
the product will be considered; and if based on a technical
evaluation, the Engineer judges the difference to be minor, he may
approve the use to the project.6.18.3.1 PRODUCT DELIVERY, STORAGE
AND HANDLINGa. Delivery materials in original unopened, protective
packaging with manufacturers labels legibly and intact.b. Store
materials and equipment under cover, off the floor to prevent rust
and damagec. Complete delivery of materials prior to installationd.
Handle materials carefully to prevent damage.6.18.3.2 QUALITY
ASSURANCEa. Inspection and TestTest for the ventilation and
air-conditioning system shall be conducted by the Contractor and
approved by the Engineer before acceptance. Equipment required for
the tests shall be furnished by the Contractor without additional
cost to the Employer.b. If an inspection or tests show defects,
such defective work or aerials shall be replaced, and inspection
and test shall be repeated. Retests shall be made by the Contractor
when directed by the Engineer, with no additional cost to the
Employer.c. At the completion of the work, all parts of the
installation, including all equipment, shall be thoroughly cleaned.
Any stoppage, discoloration or other damage to parts of the
building, the finishing due to the Contractors failure shall be
repaired by the Contractor without cost to the Employer.6.18.3.3
MATERIALS, FIXTURES AND EQUIPMENTa. Exhaust Fans and Air
Conditioning Units. The materials and equipment furnished shall be
made of well proven high quality standards designed to provide
continuous service. The product shall be the manufacturers latest
standard design.b. Exhaust Fans Design Requirements- Contractor
shall evaluate materials and select the most appropriate materials
for this service.- Fan to be constructed and tested in accordance
with AMCA standards.- Fan bearings shall be visible and accessible
for inspection and maintenance. Bearing life shall have a minimum
of twenty thousand (20,000) hours.- The fan and motor shall be
designed for static pressure capability of the specified pressure
drop.- The sound levels generated by the furnished equipment during
normal operation shall not exceed eighty five (85) dBA-weighted,
slow responses, under field condition at a horizontal distance of
10 feet from, the surface of sound generation.- Contractor shall
provide electric motor and driver for each unit, and shall be
responsible for the selection of the motor characteristics and the
motor mounting.- Specially designed shafts seals shall be provided
with the fan assuring no internal air stream to be in contact with
the fan shaft.- An inspection port shall be provided with the fan
housing to allow for impeller inspection- Fan impeller wheels shall
be a minimum of Class II.6.18.4 EXECUTIONInstallation shall be in
strict accordance with manufacturers instructions and with accepted
practices for good workmanship. Unloading, moving and erection of
equipment shall be under direct supervision of a competent and
experienced erecting engineer. The Contractor shall provide all
labor, tools, equipment, etc., for erection and installation of the
equipment.6.18.5 MEASUREMENT/BASIS OF PAYMENTThe work done under
this item shall be quantified per length and/or number of units as
provided in the Bill of Quantities, tested and accepted to the
satisfaction of the Engineer.The accepted quantities, measured as
prescribed above shall be paid for at the contract unit price for
each of the particular pay items listed and included in the Bill of
Quantities. The payment shall constitute full compensation for the
installed materials including all labor, equipment, tools and
incidentals necessary to complete the work prescribed in this
item.
ITEM 6.19 TILE WORKS6.19.1 GENERAL6.19.1.1 DESCRIPTIONThis item
shall consist of furnishing and installation of floor tile on
specified location. Installation method will be strictly followed
as per standard.6.19.2 MATERIAL REQUIREMENTSFloor tiles shall be
required ceramic type conforming to requirements of ASTM C499 09.
Individual tiles shall conform to ASTM F 2055 00 Standard Test
Method for Size and Squareness of Floor Tile. Substitution will be
made as per Engineers approval.Three hundred (300) millimeters by
three hundred (300) millimeters by twelve (12) millimeters Ceramic
tiles non slip matte finish, bedding in mortar (1:3) on render and
cement toppings.6.19.3EXECUTION6.19.3.1 PREPARATIONPrior to
commencing the installation, the Contractor shall examine the areas
to be covered and advice the Engineer of any existing conditions or
surface contamination which will require correction before the work
commences. 6.19.3.2 SURFACE PREPARATIONSurface to be covered shall
be cleaned to remove soil, dust, curing compounds, form oil,
sealants, or grease. Cleaning shall be by means of high-pressure
Hydro-blasting, Sand/grit blasting or "mechanical scabbling."
Surface to be waterproofed or tiled shall be plumb and true within
three (3) millimeters in three (3) meters and shall have a steel
trowel finish. Out-of-plumb, rough or uneven masonry, concrete or
mortar bed surfaces should be rendered and made smooth to provide a
wood float quality finish. Dry or dusty concrete surfaces shall be
washed and excess water removed before the application of the
mortar render or screed which shall be applied as a wet, workable
render and finished to a wood float finish. Installations may be
made on a damp surface.6.19.3.3 INSTALLATION OF MORTARSUse
appropriate installation mortars according to ANSI A118-1999 series
or A136.1-19996.19.3.4 INSTALLATION OF TILES1.Install tile in
pattern indicated. Align joints when adjoining tiles on floor,
base, walls, and trim are same size. Adjust to minimize tile
cutting and to avoid tile less than half size. 2.When possible,
smooth cut edges of tile and/or use appropriate cutter or wet saw
to produce smooth cuts. Provide straight cuts which align with
adjacent materials. 3.Extend tile into recesses and under equipment
and fixtures to form a complete covering without interruption.
4.Terminate tile neatly at obstructions, edges, and corners,
without disruption of pattern or joint alignment. 5.Provide tile
joints uniform in width, subject to variance in tolerance allowed
in tile size. Make joints smooth and even, without voids, cracks,
or excess mortar or grout. 6.Mix mortar in strict accordance with
manufacturer's recommendations.7.Apply setting material in
accordance with manufacturer's directions and install tile before
mortar has started initial cure. For thin set mortar application,
use a notch trowel that will achieve the recommended coverage of
mortar after tiles have been installed. Reference standard coverage
information and follow manufacturer's recommendations for trowel
size when using mortar. 8.Do not spread more material than can be
covered within ten (10) to fifteen (15) minutes. If "skinning"
occurs, remove mortar and spread fresh material. Spread mortar with
notches running in one direction that shall be perpendicular to the
pressing, pushing and pulling of tile during placement. 9.Place
tile in fresh mortar, press, push and pull the tile slightly to
achieve as near one hundred (100) percent coverage and contact of
tile with setting material and substrate as possible. The coverage
shall be no less than eighty five (85) percent and be sufficiently
distributed to give full support of the tile. Make sure that all
corners and edges are well supported with mortar. Leave no hollow
corners or edges. Note: 95-100% coverage is mandatory for wet or
exterior areas. A skim coat (back-butter) of mortar can be placed
onto the entire back of the tile using a trowel in order to assist
in optimum adhesion and coverage of the mortar being used.
10.Ensure there is a minimum 1/8 inch of mortar between tile and
substrate after proper bedding. Installer must periodically remove
sheets or individual tiles to assure proper bond coverage
consistent with industry specifications. If coverage is found to be
insufficient, use a larger size notch trowel. 11.Use a beating
block and hammer or rubber mallet so that faces and edges of
individual tiles are flush and level with faces and edges of
adjacent tiles, and to reduce lippage.6.19.3.5 GROUTING1.Install
grout in accordance with ANSI A108.10, A108.6, A108.8, A108.9- 1999
correlating to grout type chosen and manufacturers recommendations.
2.Mix grout material in strict accordance with manufacturer's
directions. 3.Apply grout to produce full, smooth grout joints of
uniform width, and free of voids and gaps. 4.Before grouting entire
area do a test area to assure there will be no permanent staining
or discoloration of the tile and to verify that the grout is easily
removed from the surface. If necessary, pre-coat exposed surfaces
of tile with a grout release as recommended by the manufacturer, as
this will facilitate removal of the grout. 5.Cure all setting and
grouting materials in accordance with manufacturer's
recommendations.6.19.3.6 CLEANING AND PROTECTION1. If one has been
used, remove grout release and clean tile surfaces so they are free
of grout residue and foreign matter, in accordance with
manufacturer's instructions. If a grout haze or residue remains,
use a suitable grout haze remover or cleaner and contact grout
manufacturer for recommendations. Flush surface with clean water
before and after cleaning. Do not use harsh hydrochloric, muriatic
or sulfuric acid or acid-based cleaners to clean glazed tiles or
tiles grouted with latex modified grout. 2. When a heavy residue of
Portland cement grout is present, acceptable tile cleaning acids
may be used. However, the grout should be allowed to cure a minimum
of ten (10) days before this aggressive cleaning method is
employed. Tile and grout shall be soaked with water before
cleaning. In the absence of a recommendation from the grout
manufacturer, acid cleaning may be done with a saturated solution
of phosphoric or sulfuric acid, mixed in accordance with
manufacturer's recommendations. 3. After cleaning, provide
protective covering and maintain conditions to protect tile work
from damage or deterioration. Where tiled surfaces will be subject
to equipment or wheel traffic or heavy construction traffic, and
during move-in of furniture and equipment, cover protective
covering with one fourth (1/4) inch hardboard, plywood or similar
material. 4. Leave finished installation clean and free of cracked,
chipped, broken, unbonded, and otherwise defective tile work. 5.
Consult most current Crossville Brochure "How to Care for Porcelain
Tile" for information on post installation cleanup and routine
maintenance6.19.4 MEASUREMENT/BASIS OF PAYMENTMeasurement shall be
per square meter for all properly installed. Whenever the Bill of
Quantities does not include an item for floor tiles, this work will
not be paid directly but, shall be considered as subsidiary
obligation of the Contractor under other contract item.The accepted
quantities, measured as prescribed above shall be paid for at the
contract unit price for each of the particular pay items listed and
included in the Bill of Quantities. The payment shall constitute
full compensation for the installed materials including all labor,
equipment, tools and incidentals necessary to complete the work
prescribed in this item.
ITEM 6.20 PAINTING WORKS6.20.1 GENERAL6.20.1.1 DESCRIPTIONThe
work shall consist of furnishing all labor, materials and equipment
required for the complete execution of all painting work specified
herein or as inferred by the Engineer.6.20.1.2 SCOPE OF WORKa.
Furnish all material, labor and equipment to perform all operations
connected to field painting.b. Inspect and prepare all surface for
painting in accordance with the surface preparation required for
the following materials: - Wood Surfaces shall be clean and free of
dust and oil. Surfaces shall be dry. - Concrete Free of dirt, loose
particles, fungus, oils or grease and efflorescence. - Plastered
Cleaning by removing mill scales, rust, oils, or grease. Galvanized
surfaces shall be cleaned or primed with Benzene or Acetic acid or
any approved solution. Wash with water and dry.6.20.2
SUBMITTALSSubmit all paints, lacquer, thinners or oil stains to be
used in their original containers for approval. Containers shall
have the manufacturers name and trade mark for the product
submitted.6.20.3 MATERIAL REQUIREMENTSa. Paint shall be any one of
the following popular brands. Dutch Boy, Boysen or Sherwin
Williams.b. Primers, thinners or tinting colors shall be a type and
brand compatible with the main paint ingredient.c. Paint finishes
shall be flat, gloss or semi-gloss as per schedule or as
indicated.6.20.3.1 QUALITY ASSURANCEa. Workmanships shall be first
class in every aspects. Painting paraphernalia shall be relatively
new.b.Allow sufficient time to dry preceding coat before the next
coat is applied. Use lighter shade of color for each coat shall be
adopted for coat identification.c.The finish color and type of
paint to be used for the surface shall be in accordance with the
approved color scheme.6.20.3.2 PROTECTIONa. Protect all hardware
not to be painted by either covering with masking tape or complete
removal from attachment. Reinstallation of items is included in
this work when the latter method of protection is adopted.b.
Provide protection of all other surface areas, which may be
affected by this operation. Provision of safe scaffoldings for
workmen shall be included.6.20.4 EXECUTION6.20.4.1 PAINT
APPLICATIONa. Accomplish all surface preparation in accordance with
accepted painting procedure.b. Mix thoroughly the type of paint to
be used to an even and workable consistency. This may be done by
manual or mechanical stirring.c. Apply the first coat with brush
taking special care to prevent paint droppings or runs.d. Allow
sufficient time for the first coat to dry. Where primed surface
require putty application, spot-putty surface imperfections. After
putty has dried sufficiently smooth out puttied portions by
standing. Wipe clean sanded portions with clean rags before the
second coat of paint is applied.6.20.4.2 SURFACE FINISHESThe
following finishing schedule for field painting shall be
followed.SurfaceTreatment
Exterior concrete and CHB WallsOne coat primer sealer. One coat
exterior acrylic latex concrete paint
Shop primed exterior Metal Surface includingGalvanized
surfacesOne coat of zinc chromatic primer. Two coat exterior
enamel
Exterior metal surfaces(Net shop primed)Two coats zinc chromatic
primer paint. Two coat exterior enamel
Interior concrete and CHB WallsOne coat interior primer
sealer.One coat interior enamel
Interior wood surfaces:a) Pigmented Finishb. Natural or Stainc)
PlywoodOne coat undercoat. One coat oil (Except plywood) paint
enamel.One coat of stain (if required) Three finish except plywood
coats sprayed lacquerOne coat varnish type sealer primer and finish
coats to be the same as in(a) above for pigmented finish(b) and
above for natural finish
Shop primed interior metalTouch up shop coat. One coat surface
interior enamel undercoatOne coat of interior enamel paint.
Interior metal surfaces, not shop primedOne coat zinc chromate
primer paint.One immediate coat enamel undercoat. One finish coat
of interior enamel paint.
Metal surfaces inaccessible after erectionShop coat of epoxy
primer coat in shop sand blast surface to white metal. Apply prime
coat with brush. Succeeding coat may be applied by spray. Follow
manufacturers instruction in mixing epoxy.
Metal Piping, FittingsPaint to match adjacent surfaces. Primer
to be zinc chromatic enamel.
Galvanized metal surfacesApply roofing paint of approved color
after surface treatment is done.First coat to a lighter shade than
the finish coat.
6.20.4.3 STORAGE AND HANDLINGa. All painting materials shall be
stored in a dry and covered location approved by the Engineer.b. A
No Smoking sign shall be visibly posted and enforced in the storage
area and at locations where paint mixing is to be done.6.20.4.4
PAINTED SURFACE PROTECTIONa. All painted surfaces shall be
protected from damage. Repair noted defects before final acceptance
by the Engineer.b. After painting operations is included in this
work.6.20.5 MEASUREMENT/BASIS OF PAYMENTThe accepted quantities,
measured as prescribed above shall be paid for at the contract unit
price for each of the particular pay items listed and included in
the Bill of Quantities. The payment shall constitute full
compensation for the installed materials including all labor,
equipment, tools and incidentals necessary to complete the work
prescribed in this item.
ITEM 6.21 CEILING FOR OFFICE AND COMFORT ROOM6.21.1
GENERAL6.21.1.1 DESCRIPTIONWorks in this item include labor,
material, equipment and tools required in conjunction with the
furnishing and installation ceiling system.6.21.2 MATERIALSAll
materials and works shall conform to the provisions of the latest
edition of the ASTM, PNS, National Building Code of the Philippines
and other applicable standards both local and
international.6.21.2.1 QUALITY ASSURANCECeiling works shall be
performed by an experienced installer with a relative experience
with plywood ceiling type of construction.6.21.2.2 PRODUCT
DELIVERY, STORAGE, AND HANDLINGDeliver materials in manufacturers
original unopened packages with contents fully identified. Handle
and store in accordance with manufacturers instructions and
recommendations.6.21.3 EXECUTIONThe ceiling grid must examine the
job site and conditions under which the suspended ceiling work is
to be performed, and notify the Engineer in a timely manner of any
unsatisfactory conditions.6.21.3.1 JOB CONDITIONSDo not install
materials until the following conditions are met: interior spaces
have been enclosed and are weather-tight; work above ceilings has
been completed.6.21.3.2 PREPARATIONCeiling grid installer shall
meet at the project site with the Engineer prior to commencement of
installation.1. Review areas of potential interference and resolve
conflicts before proceeding with the project.2. Coordinate the work
with the layout of other work that penetrates the ceiling.3. Refer
to the approved reflected ceiling plan for ceiling layout.6.21.3.3
INSALLATIONa. Install the ceiling in accordance with the
manufacturers printed installation guide.b.A laser-leveling device
must be used to level ceiling. Hanging wire must be straight or
pre-straightened prior to use.c. Call light fixtures, equipment,
air duct diffusers, filters, or ceiling penetrations must be
independently hung/supported.6.21.4 MEASUREMENT/BASIS OF PAYMENTThe
accepted quantities, measured as prescribed above shall be paid for
at the contract unit price for each of the particular pay items
listed and included in the Bill of Quantities. The payment shall
constitute full compensation for the installed materials including
all labor, equipment, tools and incidentals necessary to complete
the work prescribed in this item.
ITEM 6.22 FIRE PROTECTION SYSTEM6.22.1 GENERAL6.22.1.1
DESCRIPTIONThis item includes the furnishing, installation, and
connection of the fire alarm equipment to form a complete
coordinated system ready for operation.