-
METRO BASELINE SPECIFICATIONSTABLE OF CONTENTS
DIVISION 2 THROUGH 34
SECTION SECTION TITLE
DIVISION 02 - EXISTING CONDITIONS
02 41 00 DEMOLITION02 71 00 DEWATERING FLUID TREATMENT (DFT)
(GROUND WATER TREATMENT)
DIVISION 03 - CONCRETE
03 01 08 CONCRETE RESTORATION03 05 15 PORTLAND CEMENT CONCRETE
03 05 18 PRESTRESSED CONCRETE03 11 00 CONCRETE FORMWORK03 11 13
FALSE WORK03 15 00 CONCRETE ACCESSORIES03 15 13 WATERSTOPS03 15 15
ELASTONERIC BEARING PADS03 20 00 CONCRETE REINFORCEMENT03 23 00
PRESTRESSING BAR STEEL FOR CIP RETAINING WALLS03 25 23 EXPOSED
FINISH CONCRETE03 30 00 CAST-IN-PLACE CONCRETE03 35 00 UNIFORM
CONCRETE FINISHING03 35 05 UNFORMED CONCRETE FINISHES03 37 13
SHOTCRETE03 40 00 PRECAST CONCRETE03 41 00 STRUCTURAL PRECAST
CONCRETE03 41 13 PRECAST PRESTRESSED HOLLOW CORE PLANKS03 41 16
PRECAST CONCRETE FLOATING SLABS03 45 00 PRECAST ARCHITECTURAL
CONCRETE03 48 33 PRECAST PRESTRESSED CONCRETE PANELS03 48 43
PRECAST CONCRETE PLATFORM EDGE PAVERS03 49 00 GLASS FIBER
REINFORCED CONCRETE PANELS03 50 00 CAST-IN-PLACE FLOATING SLABS 03
53 00 CONCRETE TOPPING03 60 00 GROUT03 61 11 NON-SHRINK GROUTING03
82 13 CONCRETE CORE DRILLING
DIVISION 04 - MASONRY
04 05 13 MORTAR AND GROUT 04 05 23 MASONRY ACCESSORIES04 22 00
CONCRETE UNIT MASONRY04 23 00 GLASS UNIT MASONRY AND CONCRETE
PANELS04 43 00 GRANITE
DIVISION 05 - METALS
05 05 13 GALVANIZING05 05 15 FENCE GALVANIZING05 05 23 WELDED
STUD CONNECTORS05 05 33 BASIC WELDING REQUIREMENTS05 12 23
STRUCTURAL STEEL05 12 35 STRUCTURAL STEEL AND MISCELLANEOUS METAL
FOR BRIDGES05 13 01 STAINLESS STEEL ASSEMBLIES 05 13 13 STAINLESS
STEEL FILLER PANEL SYSTEM05 13 23 STAINLESS STEEL ESCALATOR
CLADDING 05 14 01 ALUMINUM ASSEMBLIES 05 30 00 METAL DECKING05 40
00 COLD-FORMED METAL FRAMING05 41 00 STRUCTURAL METAL STUD
FRAMING05 43 00 SLOTTED CHANNEL FRAMING 05 50 00 METAL
FABRICATIONS05 51 00 METAL STAIRS05 51 33 METALl LADDERS05 51 36
METAL WALKWAYS
1 OF 8 REVISED: 09/05/12
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METRO BASELINE SPECIFICATIONSTABLE OF CONTENTS
DIVISION 2 THROUGH 34
05 52 13 METAL RAILINGS05 53 10 METAL GRATINGS05 59 00 CUSTOM
SHEET METAL 05 60 00 STEEL POLES FOR OCS05 70 00 ORNAMENTAL METAL
WORK
DIVISION 06 - WOOD, PLASTICS, AND COMPOSITES
06 10 00 ROUGH CARPENTRY06 20 00 FINISH CARPENTRY06 82 00
PULTRUDED FIBERGLASS GRATING
DIVISION 07 - THERMAL AND MOISTURE PROTECTION
07 11 00 DAMP PROOFING07 13 00 SHEET WATERPROOFING 07 13 19
HYDROCARBON-RESISTANT MEMBRANE FOR CAST-IN-PLACE CONCRETE07 13 29
BUTYL RUBBER MEMBRANE WATERPROOFING07 13 50 HYDROCARBON-RESISTANT
ELEVATOR CYLINDER CASING07 13 60 HYDROCARBON-RESISTANT COATING07 14
00 FLUID APPLIED WATERPROOFING07 17 00 BENTONITE WATERPROOFING07 18
00 TRAFFIC COATINGS07 21 00 BUILDING INSULATION 07 22 16 ROOF
INSULATION BOARD 07 26 00 VAPOR RETARDERS07 42 13 METAL WALL
PANELS07 42 43 COMPOSITE WALL PANELS 07 44 16 PORCELAIN ENAMEL
PANELS07 51 00 BUILT-UP BITUMINOUS ROOFING 07 52 00 MODIFIED
BITUMINOUS MEMBRANE ROOFING 07 53 00 ELASTOMERIC MEMBRANE ROOFING07
56 00 FLUID-APPLIED ROOFING07 61 00 SHEET METAL ROOFING07 62 00
SHEET METAL FLASHING AND TRIM07 72 00 ROOF ACCESSORIES07 81 00
SPRAYED-ON FIREPROOFING 07 81 23 INTUMESCENT FIREPROOFING07 81 33
RIGID MINERAL BOARD FIREPROOFING07 84 00 FIRESTOPPING 07 91 26
JOINT FILLERS AND GASKETS07 92 00 JOINT SEALANTS07 95 00 EXPANSION
CONTROL07 95 55 BRIDGE PTFE BEARINGS07 95 60 SEISMIC EXPANSION
JOINT ASSEMBLIES07 95 63 BRIDGE EXPANSION JOINTS
DIVISION 08 - OPENINGS
08 01 57 WINDOW RESTORATION AND REPLACEMENT08 11 13 HOLLOW METAL
DOORS AND FRAMES08 13 76 Bi-FOLDING METAL DOORS08 30 60 TRAIN
CONTROL & COMMUNICATION (TC&C) ROOMS ACCESS HATCHES08 31 13
ACCESS DOORS AND FLOOR HATCHES08 33 13 COILING COUNTER DOORS08 33
23 OVERHEAD COILING DOORS 08 33 26 OVERHEAD COILING GRILLES08 34 00
EMERGENCY EXIT HATCHES08 39 00 PRESSURE RESISTANT DOORS 08 45 13
STRUCTURED-POLYCARBONATE-PANEL ASSEMBLIES08 51 13 ALUMINUM WINDOWS
AND FRAMES08 62 00 SKYLIGHTS 08 63 00 METAL FRAMED SKYLIGHT 08 71
00 DOOR HARDWARE 08 80 00 GLAZING08 81 13 POLYCARBONATE GLAZING
2 OF 8 REVISED: 09/05/12
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METRO BASELINE SPECIFICATIONSTABLE OF CONTENTS
DIVISION 2 THROUGH 34
08 91 00 LOUVERS
DIVISION 09 - FINISHES
09 22 16 NON-LOAD BEARING INTERIOR STUD SYSTEM09 22 26 CEILING
SUSPENSION SYSTEM 09 24 23 PORTLAND CEMENT PLASTER09 29 16 GYPSUM
BOARD AND BACKER UNITS09 30 00 FLOOR AND WALL TILE09 30 13 TILE
REPLACEMENT AND RESTORATION09 35 00 TACTILE FLOOR PANEL09 51 13
ACOUSTICAL PANEL CEILINGS09 51 53 SPRAYED-ON ACOUSTICAL FINISH09 56
16 METAL CEILING SYSTEMS 09 63 40 STONE FLOORING09 65 00 RESILIENT
FLOORING09 66 16 TERRAZO FLOOR TILE AND PAVERS09 69 00 ACCESS
FLOORING09 77 00 STAINLESS STEEL FORMED CLADDING09 91 00 PAINTING09
91 10 CLEANING AND PAINTING STRUCTURAL STEEL AND MISCELLANEOUS
METAL FOR BRIDGES09 96 23 ANTI-GRAFFITI COATING 09 96 35
FLUOROPOLYMER COATING 09 96 36 FIELD APPLIED HIGH PERFORMANCE
COATINGS 09 96 37 SILICONE POLYESTER FINISH09 96 56 COAL TAR EPOXY
COATING SYSTEM09 96 57 DIELECTRIC INSULATION 09 96 60 ELECTRICALLY
INSULATING DECK COATING09 97 00 PHOSPHORESCENT PHOTO LUMINESCENT
COATING
DIVISION 10 - SPECIALTIES
10 14 10 SIGNS10 14 23 SITE AND OPERATION SIGNS 10 14 26 STATION
MARKERS10 14 33 ILLUMINATED SIGNS AND EDGE LIGHTS 10 14 53 TRAFFIC
SIGNAGE10 17 16 PUBLIC TELEPHONES10 21 13 METAL TOILET
COMPARTMENTS10 21 15 PLASTIC TOILET COMPARTMENTS10 22 13 WIRE MESH
PARTITIONS10 28 13 TOILET ACCESSORIES10 43 00 BETWEEN CAR BARRIERS
10 44 13 FIRE EXTINGUISHERS AND CABINETS10 50 00 MAP CASES10 51 13
METAL LOCKERS10 56 29 STORAGE RACK SYSTEM10 81 13 BIRD DETERRENT
DEVICES
DIVISION 12 - FURNISHINGS
12 15 20 ART PROGRAM12 59 00 STATION FURNISHINGS12 93 00 SITE
FURNISHING12 93 12 BICYCLE PARKING12 93 14 BICYCLE LOCKERS AND
RACKS
DIVISION 13 - SPECIAL CONSTRUCTION
13 31 23 TENSIONED FABRIC STRUCTURES13 34 00 KIOSKS13 34 19
GUARDHOUSE
DIVISION 14 - CONVEYING EQUIPMENT
14 21 23 ELECTRIC TRACTION PASSENGER ELEVATORS
3 OF 8 REVISED: 09/05/12
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METRO BASELINE SPECIFICATIONSTABLE OF CONTENTS
DIVISION 2 THROUGH 34
14 21 24 MACHINE ROOM-LESS ELECTRIC TRACTION ELEVATORS14 24 00
HIGH DENSITY POLY ETHYLENE (HDPE) ELEVATOR JACK-HOLE CASING14 24 23
HYDRAULIC PASSENGER ELEVATORS14 24 26 HYDRAULIC OIL PIPING FOR
ELEVATORS14 31 23 ESCALATORS
DIVISION 21 - FIRE SUPPRESSION
21 05 00 BASIC FIRE SUPPRESSION SYSTEM REQUIREMENTS21 05 10 FIRE
PROTECTION DEMOLITION21 12 00 FIRE-SUPPRESSION STANDPIPES21 13 13
WET-PIPE SPRINKLER SYSTEM21 22 00 CLEAN AGENT FIRE-EXTINGUISHING
SYSTEM21 30 00 FIRE PUMPS WITH CONTROLLERS
DIVISION 22 - PLUMBING
22 05 00 BASIC PLUMBING REQUIREMENTS22 05 10 PLUMBING
DEMOLITION22 05 29 PIPE SLEEVES, SUPPORTS, GUIDES AND ANCHORAGES22
05 48 VIBRATION-SEISMIC ISOLATIONS FOR PLUMBING WORK22 05 53
PLUMBING SYSTEMS IDENTIFICATION22 07 00 PLUMBING INSULATION22 09 00
INSTRUMENTATION AND CONTROLS FOR PLUMBING WORK22 11 00 WATER SUPPLY
SYSTEM (PLUMBING)22 11 23 WATER CIRCULATING PUMPS 22 13 00 SANITARY
SEWER SYSTEM (PLUMBING)22 13 23 SAND & GREASE INTERCEPTOR22 13
29 SUMP PUMPS (PLUMBING)22 14 01 STORM DRAINAGE SYSTEM (PLUMBING)22
15 00 COMPRESSED AIR SYSTEM22 33 00 DOMESTIC WATER HEATERS22 40 00
PLUMBING FIXTURES22 60 00 VACUUM CLEANING SYSTEM
DIVISION 23 - HEATING, VENTILATING AND AIR CONDITIONING
(HVAC)
23 01 00 BASIC MECHANICAL REQUIREMENTS - HVAC SYSTEMS23 05 10
MECHANICAL DEMOLITION23 05 48 VIBRATION ANDSEISMIC CONTROL FOR HVAC
SYSTEMS23 05 53 MECHANICAL IDENTIFICATION - HVAC SYSTEMS23 05 93
TESTING, ADJUSTING AND BALANCING23 07 00 MECHANICAL INSULATION23 08
00 COMMISSIOING OF HVAC SYSTEMS 23 09 00 CONTROLS AND
INSTRUMENTATION FOR HVAC SYSTEMS23 10 13 FACILITY FUEL OIL LEAK
DETECTION AND MONITORING SYSTEMS23 11 13 FACILITY FUEL OIL PIPING
AND ACCESSORIES23 11 23 NATURAL GAS SYSTEM23 12 13 FACILITY FUEL
OIL PUMP23 13 13 FACILITY UNDERGROUND FUEL OIL STORAGE TANKS23 13
23 FACILITY ABOVEGROUND FUEL OIL STORAGE TANKS23 21 13 CHILLED
WATER AND CONDENSER WATER PIPING SYSTEMS23 21 23 WATER PUMPS23 22
13 HEATING HOT WATER SYSTEMS23 23 00 REFRIGERANT PIPING SYSTEMS23
30 00 AIR DISTRIBUTION AND DUCT SYSTEMS23 33 19 SOUND ATTENUATORS
23 34 00 HVAC FANS23 35 23 STATION EMERGENCY VENTILATION FANS23 35
26 TUNNEL JET FANS23 35 28 EMERGENCY FAN DAMPERS AND TRACK
DAMPERS23 36 00 AIR TERMINAL UNITS23 52 00 BOILERS23 64 00 AIR
COOLED WATER CHILLERS23 64 10 WATER-COOLED WATER CHILLERS23 65 00
COOLING TOWERS
4 OF 8 REVISED: 09/05/12
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METRO BASELINE SPECIFICATIONSTABLE OF CONTENTS
DIVISION 2 THROUGH 34
23 70 00 HEATING, VENTILATING AND AIR CONDITIONING EQUIPMENT
DIVISION 26 - ELECTRICAL
26 05 00 ELECTRICAL DEMOLITION26 05 05 DESIGN REQUIREMENTS FOR
THE AUXILLARY POWER DISTRIBUTION26 05 10 BASIC ELECTRICAL MATERIALS
AND METHODS26 05 13 MEDIUM VOLTAGE CABLES AND TERMINATIONS26 05 17
DRY-TYPE TRANSFORMERS 0.100 - 75kVA 600V26 05 19 INSULATED WIRES
AND CABLES26 05 26 GROUNDING AND BONDING26 05 33 RACEWAY SYSTEMS
ALONG ELEVATED AND AT-GRADE GUIDEWAY26 05 36 CABLEWAYS FOR TUNNEL26
05 43 UNDERGROUND ELECTRICAL DISTRIBUTION SYSTEM AND STRUCTURES26
05 48 VIBRATION ISOLATION AND RESTRAINING DEVICES26 05 53
IDENTIFICATION FOR ELECTRICAL SYSTEMS26 05 73 ARC FLASH HAZARD
ANALYSIS AND SHORT CIRCUIT/COORDINATION26 08 00 TEST
SUPPORT/START-UP26 09 16 CONTROL STATIONS, CONTROL PANELS AND
INTERFACE CABINETS26 09 18 CONTROLS AND INSTRUMENTATION26 09 19
MOTOR STARTERS AND CONTACTORS26 09 23 LIGHTING CONTROLS AND
INSTRUMENTATION26 12 00 AUXILIARY POWER TRANSFORMERS, DRY-TYPE26 23
00 480-VOLT SWITCHBOARD26 24 00 MOTORS 26 24 19 MOTOR CONTROL
CENTERS26 28 16 ENCLOSED CIRCUIT BREAKERS AND PANEL BOARDS26 33 01
DC BATTERY SYSTEMS26 33 53 UNINTERRUPTIBLE POWER SUPPLY(UPS)26 36
23 AUTOMATIC TRANSFER SWITCH (ATS)26 42 00 CATHODIC PROTECTION
SYSTEMS26 42 13 CATHODIC PROTECTION FOR WATER DISTRIBUTION
FACILITIES 26 42 23 ELECTRICAL CONTINUITY TEST FOR STEEL
REINFORCEMENT26 42 26 CATHODIC PROTECTION SYSTEMS (STEEL TUNNEL
LINER)26 50 00 LIGHTING26 52 00 TUNNEL LIGHTING26 56 00 EXTERIOR
LIGHTING26 70 30 ELECTRICAL REQUIREMENTS OF MECHANICAL WORK
Division 27 COMMUNICATION
27 05 12 TICKET VENDING MACHINE SYSTEM27 05 14 RADIO SYSTEM FOR
UNDERGROUND STATIONS 27 05 15 SUPERVISORY CONTROL AND DATA
ACQUISITION REMOTE TERMINAL UNIT (SCADA RTU)27 05 16 SPARE PARTS
AND TEST EQUIPMENT27 05 18 FACILITIES AND EMERGENCY MANAGEMENT
SYSTEM27 05 20 COMMUNICATIONS SYSTEM / TICKET VENDING MACHINE27 05
43 CABLE TRANSMISSION SYSTEM 27 05 56 SAFETY AND SYSTEM ASSURANCE27
07 01 COMMUNICATIONS EQUIPMENT AND CIRCUITS27 11 19 COMMUNICATIONS
TERMINAL BLOCK, CONNECTORS AND PATCH PANELS27 15 00 ANTENNAS,
CABLING AND POLE MOUNTS27 15 23 OPTICAL FIBER HORIZONTAL CABLING27
15 33 COMMUNICATIONS COAXIAL HORIZONTAL CABLE27 21 26 DATA
COMMUNICATIONS NETWORK MANAGEMENT27 21 29 DATA COMMUNICATIONS
SWITCHES27 30 01 TELEPHONE SYSTEMS27 32 16 WIRELESS TRANSCEIVERS27
32 17 ON-FREQUENCY REPEATERS27 51 16 PUBLIC ADDRESS/VARIABLE
MESSAGE SIGN (PA/VMS) SYSTEM27 70 26 UNINTERRUPTABLE POWER SYSTEMS
(UPS) AND FLOAT BATTERY POWER SUPPLIES
DIVISION 28 - ELECTRONIC SAFETY AND SECURITY
28 10 15 INTRUSION DETECTION SYSTEM28 31 00 FIRE DETECTION AND
ALARM SYSTEM
5 OF 8 REVISED: 09/05/12
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METRO BASELINE SPECIFICATIONSTABLE OF CONTENTS
DIVISION 2 THROUGH 34
28 41 29 CLOSED CIRCUIT TELEVISION SYSTEM28 41 31 GAS DETECTION
& ALARM SYSTEM28 41 32 SEISMIC EVENT DETECTION & ALARM
SYSTEM28 41 33 TUNNEL PORTAL SURVEILLANCE SYSTEM
DIVISION 31 - EARTHWORK
31 01 70 SEALING LEAKS31 09 13 GEOTECHNICAL INSTRUMENTATION AND
MONITORING 31 10 00 SITE CLEARING31 20 00 EARTHWORK31 23 19
DEWATERING31 41 16 STEEL SHEET PILING31 48 00 UNDERPINNING, SUPPORT
AND RESTORATION OF STRUCTURES31 50 00 EXCAVATION SUPPORT SYSTEMS31
51 00 TIEBACK ANCHORS31 63 26 CAST-IN-DRILLED-HOLE PILES31 63 29
OCS POLE FOUNDATION AND GUY ANCHOR PIER SHAFTS31 63 30 OCS POLE
FOUNDATION PIER CONSTRUCTION31 63 31 OCS GUY ANCHOR PIER
CONSTRUCTION31 63 32 GUY GUARDS31 63 33 OCS POLE AND GUY ANCHOR
PEDESTAL ANCHOR BOLT CONSTRUCTION31 71 00 EXCAVATION BY SEQUENTIAL
EXCAVATION METHOD (SEM)31 71 16 MINED CROSS PASSAGES31 71 19
EXCAVATION BY TUNNEL BORING MACHINE31 73 00 TUNNEL GROUTING31 74 00
FABRICATED STEEL SEGMENTED TUNNEL LINERS31 74 13 CAST-IN-PLACE
CONCRETE TUNNEL LINING31 74 16 PRECAST CONCRETE ONE-PASS TUNNEL
LINERS31 79 00 COMPENSATION GROUTING31 81 00 JET GROUTING31 82 00
PERMEATION GROUTING
DIVISION 32 - EXTERIOR IMPROVEMENTS
32 01 13 SLURRY SEALCOAT32 01 90 LANDSCAPE MAINTENANCE AND PLANT
ESTABLISHMENT32 11 23 CRUSHED AGGREGATE BASE32 12 16 ASPHALT
CONCRETE PAVEMENT32 13 13 PORTLAND CEMENT CONCRETE PAVEMENT32 13 16
SPECIAL FINISH CONCRETE PAVING (SFCP)32 14 16 BRICK PAVERS32 15 40
CRUSHED STONE SURFACING 32 16 13 CONCRETE CURBS, GUTTERS AND
SIDEWALKS32 17 23 PAVEMENT STRIPING AND MARKING32 31 13 CHAIN LINK
FENCING32 31 14 FENCE GALVANIZING 32 31 19 STEEL PICKET FENCING32
32 00 RETAINING WALLS32 32 24 REINFORCED SOIL (MSE) RETAINING
WALL32 80 00 IRRIGATION SYSTEM32 91 00 TOPSOIL32 92 19 HYDRO
SEEDING32 93 00 PLANTS32 93 23 LANDSCAPE PLANTING32 94 43 TREE
WELLS32 96 00 TREE STORAGE AND REPLANTING
DIVISION 33 - UTILITIES
33 00 00 PIPED UTILITIES (NEW)33 01 00 MAINTENANCE AND SUPPORT
UTILITIES33 11 00 WATER DISTRIBUTION SYSTEM33 30 00 SANITARY SEWER
SYSTEM33 39 13 MANHOLE FRAMES AND COVERS33 40 00 STORM DRAINAGE
SYSTEMS
6 OF 8 REVISED: 09/05/12
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METRO BASELINE SPECIFICATIONSTABLE OF CONTENTS
DIVISION 2 THROUGH 34
33 51 00 GAS DISTRIBUTION SYSTEM REARRANGEMENTS33 51 13 GAS
SUPPLY SYSTEM33 71 00 UNDERGROUND ELECTRICAL DISTRIBUTION SYSTEM
AND STRUCTURES33 82 13 UNDERGROUND TELEPHONE, TELEGRAPH AND CITY
COMMUNICATIONS33 82 23 UNDERGROUND CABLE TELEVISION FACILITIES
DIVISION 34 - TRANSPORTATION34 11 00 GENERAL TRACK
CONSTRUCTION34 11 07 TRACK ELECTRICAL TESTING34 11 08
TRACK-TO-EARTH RESISTANCE TESTS34 11 13 RUNNING RAIL34 11 16 RAIL
WELDING34 11 23 SPECIAL TRACK WORK34 11 24 DIRECT FIXATION TRACK
CONSTRUCTION34 11 25 DIRECT FIXATION RAIL SOFT FASTENER34 11 26
BALLASTED TRACK CONSTRUCTION34 11 27 SPECIAL TRACK WORK -
BALLASTED34 11 28 SPECIAL TRACK WORK - DIRECT FIXATION34 11 29
BALLAST34 11 30 SUB BALLAST34 11 31 TRACK GRADE CROSSINGS34 11 33
CONCRETE TIES34 11 34 TIMBER TIES34 11 35 TIMBER SWITCH TIES34 11
36 DIRECT FIXATION RAIL FASTENERS34 11 93 TRACK APPURTENANCES AND
OTHER TRACK MATERIAL34 21 10 BASIC ELECTRICAL REQUIREMENTS (TPS)34
21 15 SUBSTATION ENCLOSURE34 21 19 HIGH-VOLTAGE AC POWER
SWITCHGEAR34 21 20 DC POWER SWITCHGEARS34 21 21 750 VOLT NEGATIVE
BUS BOXES34 21 22 METAL-ENCLOSED BUS AND BUSWAYS34 21 27 TRACTION
POWER INSULATED WIRES AND CABLES34 21 28 DC INSULATED CABLES34 21
29 CABLE TERMINATIONS34 21 30 NEGATIVE GROUNDING DEVICE34 21 31
TRACTION POWER BLUE LIGHT STATION (BLS) SYSTEM34 21 49 TRACTION
POWER PROGRAMMABLE LOGIC CONTROLLER (PLC)34 21 50 BASIC ELECTRICAL
MATERIALS AND METHODS34 21 55 GROUDING AND BONDING34 21 61 TRACTION
POWER DC LOAD-BREAK SWITCHES34 21 65 BATTERIES AND ACCESSORIES34 21
71 DISTRIBUTION AND POWER TRANSFORMERS34 21 75 AC-TO-DC
CONVERSATION ASSEMBLIES34 21 76 TRACTION POWER SUPERVISORY CONTROL
INTERFACE TERMINAL CABINET (SCITC)34 21 80 THIRD RAIL34 21 81 THIRD
RAIL INSTALLATION34 21 85 TRACTION POWER MANUALS34 21 90 TRACTION
POWER TRAINING34 23 00 OCS POLE AND GUY ANCHOR PEDESTAL ANCHOR BOLT
CONSTRUCTION34 23 09 OVERHEAD CONTACT SYSTEM (OCS) STANDARD34 23 15
STEEL WIRE AND WIRE ROPE34 23 17 ASSEMBLIES, FITTINGS, AND
HARDWARE34 23 18 INSULATORS34 23 19 OCS GROUNDING AND BONDING
SYSTEMS34 23 20 BARE CONDUCTORS - OCS34 23 21 SECTIONALIZING
INSULATOR ASSEMBLY34 23 22 SECTIONALIZING BYPASS AND DISCONNECT
SWITCHES34 23 24 SURGE ARRESTORS34 23 25 OVERHEAD CONTACT SYSTEM
INSTALLATION34 23 26 OVERHEAD CATENARY SYSTEM TESTING34 27 00
TRACTION POWER, TESTING AND ACCEPTANCE34 42 13 GENERAL RAILWAYS
SIGNAL REQUIREMENTS34 42 15 TRACT CIRCUITS34 42 16 INTERIOR WIRES
AND CABLE34 42 17 EXTERIOR WIRE AND CABLE
7 OF 8 REVISED: 09/05/12
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METRO BASELINE SPECIFICATIONSTABLE OF CONTENTS
DIVISION 2 THROUGH 34
34 42 25 MICROPROCESSOR CONTROL SYSTEMS34 42 27 ELECTRICAL AND
ELECTRONIC COMPONENTS34 42 28 SWITCH MACHINE LAYOUTS34 42 30
SPECIAL TRACKWORK BONDING34 42 35 SIGNAL LAYOUTS34 42 40
CIRCUIT-LOGIC REQUIREMENTS34 42 41 TRAIN CONTROL LOCAL CONTROL
PANEL34 42 42 TRAIN CONTROL BOOK OF PLANS REQUIREMENTS34 42 45
POWER DISTRIBUTION34 42 55 MARKING AND TAGGING34 42 60 SYSTEM
GROUDING TRAIN CONTROL34 42 70 TRAIN CONTROL BUNGALOW AND CASE
LAYOUT34 42 80 RELAYS34 42 90 ELECTROMAGENTIC COMPATIBILITY -
SIGNAL SYSTEM34 42 92 TRAIN CONTROL INTERFACE REQUIREMENTS34 42 95
TETS AND INSPECTION34 42 96 TRAIN CONTROL MANUALS AND TRAINING 34
76 13 GRADE CROSSING LAYOUTS
8 OF 8 REVISED: 09/05/12
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Demolition 02 41 00 - 1 Baseline: 07/11/12 REVISION 1:
09/05/12
SECTION 02 41 00
DEMOLITION
PART 1 - GENERAL
1.01 SECTION INCLUDES A. Site clearing within those parcels
indicated, and includes surface and subsurface
removal or capping of public utility connections, removal and
filling of basements and depressions, and installing and removing
temporary fence. All materials are to be removed from the site;
recycled or disposed of.
B. Completely remove buildings and structure foundations,
footings and foundation systems, hazardous materials, basements,
stairs, hardscape, and walls except as otherwise indicated.
C. Prior to start of demolition of facilities, confirm that all
utility services have been shut off, notify respective utility
agencies and coordinate this work in accordance with the governing
agency.
D. Remove trees, bushes, and weeds as indicated. Protect trees
that are to remain on Worksite.
E. Remove and dispose of debris and liter, in accordance with
the construction Best Management Plan (BMP).
F. Demolish only to the extent indicated.
G. Cap sewer house connections at property line. Cap gas and
water lines, remove electrical, telephone, and cable lines.
H. For Street Use Permits, required for installing pedestrian
canopies on sidewalks, parking trucks, dumpsters in curb lane
adjacent to Worksite; contact Street Use Inspection-Permit Office
of local authorities having jurisdiction at least 30 days before
start of operations to make necessary arrangements and obtain
permit.
I. For Haul Route Permits, contact Bureau of Engineering and
Metro Rail Coordinator, for requirements at least 30 days before
required start date of hauling operations, unless otherwise
specified or according to the local authorities.
1.02 RELATED SECTIONS
A. Section 01 33 00: Submittal Procedures
B. Section 01 43 10: Project Quality Program Requirements -
Design/Build or Section 01 43 20: Project Quality Program
Requirements - Design/Bid/Build (as applicable)
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Demolition 02 41 00 - 2 Baseline: 07/11/12 REVISION 1:
09/05/12
C. Section 01 35 43: Environmental Procedures for Hazardous
Materials
D. Section 01 35 69: Lead-Related Construction Work
E. Section 01 35 70: Asbestos-Related Construction Work
F. Section 01 56 28: Construction Fencing (Chain Link)
G. Section 01 57 19: Temporary Environmental Control
H. Section 31 20 00: Earthwork
I. Section 03 30 00: Cast-In-Place Concrete
J. Section 03 31 00: Concrete Formwork
K. Section 05 12 35: Structural Steel and Miscellaneous Metal
for Bridges
1.03 REFERENCES
A. South Coast Air Quality Management District (SCAQMD):
1. Rule 402 Nuisance
2. Rule 403 Fugitive Dust
3. Rule 1403 Asbestos Emissions from demolition/Renovation
Activities
1.04 QUALITY ASSURANCE
A. Comply with Project Quality Program Requirements (see 1.02
above).
B. Perform Work in compliance with requirements of governing
authorities having jurisdiction, and as specified. Metro will
provide written authorization to commence Work.
C. Provide temporary fence and gates complying with Section 01
56 28, Construction Fencing (Chain Link).
1.05 SUBMITTALS
A. Refer to Section 01 33 00 - Submittal Procedures, for
submittal requirements and procedures.
B. Plan containing methods and schedule of demolition in
conformance with Demolition Article, CAL/OSHA Construction Safety
Orders, and other regulatory authorities; South Coast Air Quality
Management District, Rule 1403, City Of Los Angeles, California
Environmental Protection Agency (Cal/EPA).
C. Permits obtained by Contractor for demolition, removal,
transport and disposal of debris.
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Demolition 02 41 00 - 3 Baseline: 07/11/12 REVISION 1:
09/05/12
D. Letter documenting arrangements for disposing of waste and
excess materials at a legally licensed landfill/disposal facility
outside Worksite.
E. All non-hazardous and hazardous waste manifests will be
signed by and managed by Metro. Manifests to be provided by the
Contractor, demolition Contractor or transporter. Copies of
manifests and landfill documents will be provided to the
Contractor.
F. Upon completion of Work provide As-built Drawing(s) of
locations and depths of Sanitary Sewer Service Caps, water lines,
gas lines, TV cable, etc.
1.06 DEFINITIONS (Not Used)
1.07 WORKSITE CONDITIONS
A. Protection of Persons and Property:
1. Post warning lights at perimeters of open depressions and
excavations occurring as part of Work; when accessible through
adjacent property or through public access. Operate warning lights
during hours from dusk to dawn each day and as otherwise
required.
a. Excavations and depressions - Barricade in accordance with
CAL-OSHA standards.
2. Protect utilities, pavements and facilities from damage
caused by demolition vehicle equipment, settlement, lateral
movement, undermining, washout, and other hazards created by the
demolition operations.
3. Repair damage to sidewalks, driveways, curbs, fences, shrubs,
and trees, adjacent to Worksite that are the result of the
Contractor’s activities.
B. Unknown Conditions:
1. Contract Drawings may not represent all surface nor
sub-surface conditions at Worksite. Compare with actual conditions
before commencing of Work. Pot-hole and locate the critical
sub-surface utilities prior to performing any excavation.
2. Remove grade beams, caissons, and other structural elements
discovered during the Work, unless otherwise noted to remain.
3. Metro has assessed structures to be demolished for
asbestos-containing materials (ACM). Refer to other specification
sections for handling of ACM.
4. Existing soils may contain hazardous materials. Hazardous
material work is included in the Scope of Work. Refer to other
specification sections, for handling of soils containing hazardous
material.
C. Dust Control
1. As specified in Section 01 57 19, Temporary Environmental
Control and South Coast Air Quality Management District Rule 402
and 403, and other regulatory requirements.
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Demolition 02 41 00 - 4 Baseline: 07/11/12 REVISION 1:
09/05/12
D. Pollution Control:
1. Refer to Section 01 57 19, Pollution Controls, for measures
to mitigate dust, noise/vibration, water and other pollution
created by the Work.
2. Metro will perform audit monitoring of air, noise, water, and
other media to ensure compliance with specifications and legal
regulatory requirements.
E. Lead-Based Paint:
1. Metro has assessed structures to be demolished for lead-based
paint. Surfaces found to contain lead-based paint and estimated
qualities are identified in Environmental Site Assessment Reports
furnished in the Contract Documents.
2. Comply with Section 01 35 69, Lead-Related Construction
Work.
F. Asbestos:
1. Metro has assessed structures to be demolished for
asbestos-containing materials. Asbestos containing construction
materials are identified in Environmental Site Assessment Reports
furnished in the Contract Documents.
2. Comply with Section 01 35 69, Asbestos Related Construction
Work.
G. Underground Storage Tanks (USTs)
1. USTs are located where indicated. Refer to Sections 01 35 43,
Environmental Procedures for Hazardous Materials, for removal of
these tanks.
PART 2 - PRODUCTS
2.01 MATERIALS USED FOR BACKFILL
A. As specified in Section 31 20 00, Earthwork..
2.02 TEMPORARY FENCE AND GATES
A. As specified in Section 01 56 28, Construction Fencing (Chain
Link).
PART 3 - EXECUTION
3.01 DEMOLITION
A. Do not start demolition until submittals are reviewed and
accepted and all permits are obtained.
B. Install and remove temporary fence and gates as noted on
drawings.
C. Minimize construction noise at demolition Worksite close to
residential areas.
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Demolition 02 41 00 - 5 Baseline: 07/11/12 REVISION 1:
09/05/12
D. Demolish buildings and other structures, including
foundations and base slabs, as indicated, and remove from Worksite.
Use methods as required to complete Work within limitations of
regulations, and requirements of governing agencies and Metro.
1. Perform demolition and removal by means approved by
Metro.
2. Proceed with demolition Work in a systematic manner in
accordance with Demolition Plan. Complete demolition Work above
each floor or tier before disturbing supporting members on lower
levels.
3. Remove Hazardous Materials in accordance with Sections 01 35
69, Lead Related Construction Work and Section 01 35 70, Asbestos
Related Construction Work, and in accordance with Industry
Standards.
4. Demolish concrete and masonry in small sections.
5. Break up and remove concrete slabs on-grade, unless otherwise
shown to remain.
6. Demolish and remove foundations, footings, grade beams, and
other concrete objects.
7. Completely remove basements and depressed pits.
8. Remove walks, steps, walls, loading docks or platforms
adjoining buildings, unless otherwise noted to remain. Do not
remove sidewalks in public right of way.
9. Remove poles, signs and fences, including footings unless
otherwise noted to remain. Poles owned by utility company(s) will
be removed by utility company(s).
10. Remove trees and shrubs within parcel limits.
E. Break up and remove asphalt and concrete pavement, walks,
steps, walls, slabs and aprons, unless indicated otherwise on the
drawings.
F. Cap sewer service laterals at property line according to City
of Los Angeles, Standard Plan S-110-1, Note 4. Note location and
depth of cap on As-Built drawings, along with locations of other
utility terminations.
G. Backfill and compact depressions including basement cavities
caused by any excavations, demolition and removal, or as called out
on the Contract Drawings in accordance with Section 31 20 00
Earthwork except that separate measurement or payment will not be
made.
3.02 SALVAGE OR DISPOSAL OF MATERIALS
A. Materials indicated to be removed or demolished become
property of Contractor. Remove from Worksite and recycle or dispose
of at legal disposal sites. Arrange for and pay required fees.
B. Do not allow non-salvageable material demolished or removed
to accumulate at Worksite. Remove from Metro's property at frequent
intervals, or as directed by Metro.
C. Burning of materials at the Worksite is not allowed.
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Demolition 02 41 00 - 6 Baseline: 07/11/12 REVISION 1:
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D. Achieve a minimum of 80% for recycling of all demolition
waste. Recycling facilities acceptance of concrete, brick, stone,
metal, glass, wood, interior and exterior architectural details,
etc. are to be provided to Metro. During loading of all materials
into dump trucks the Contractor shall meet the noise criteria.
Large concrete slabs are not to be dumped into empty containers. A
small amount of soil shall be loaded into the truck/container to
act as a cushion/noise suppressant.
E. Cleanup:
1. Leave worksite clean and orderly at the end of each day.
There shall be no off site migration of dust, dirt, or water. Each
Worksite shall have access, egress and adjacent sidewalk areas
swept and clean at all times.
2. Contractor shall be responsible for the removal of dirt
tracked out onto city streets.
3.03 SECURITY
A. Fence gates at each parcel shall be locked and secured except
when Contractor is working on that parcel. Doors to buildings and
structures shall be locked except when work is occurring within the
building.
B. Night fire watch/security shall be provided for any structure
under demolition when the work is not completed by the end of the
business day.
END OF SECTION 02 41 00
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Dewatering Fluid Treatment (DFT) 02 71 00 - 1 Baseline:
07/11/12
SECTION 02 71 00
DEWATERING FLUID TREATMENT (DFT)
PART 1 - GENERAL
1.01 SECTION INCLUDES A. Providing a groundwater testing and
analysis program to comply with National Pollutant
Discharge Natoional Pollutant Discharge Elimination System
(NPDES) requirements and designing, furnishing, locating,
installing, maintaining, moving on and off site as required,
operating, and moving a temporary dewatering fluid treatment system
to satisfactorily treat dewatered fluids for discharge to storm
water drainage systems.
B. Metro or its designee will obtained NPDES permits to
discharge groundwater into existing storm drain system. Obtain
storm drain connection permits from local authority having
jurisdiction and other permits as required.
C. Contractor is responsible for treatment and disposal of
dewatering fluids while maintaining compliance with requirements of
Metro’s NPDES permit. Delays, legal costs, fines, or other expenses
due to the Contractor's inadequate treatment or other factors
resulting in nonconformance with permit are solely responsibility
of Contractor.
1.02 RELATED SECTIONS
A. Section 01 33 00: Submittal Procedures
B. Section 01 43 10: Project Quality Program Requirements -
Design/Build or Section 01 43 20: Project Quality Program
Requirements - Design/Bid/Build (as applicable)
1.03 REFERENCES
A. California Environmental Protection Agency (Cal/EPA)
1. State Water Resources Control Board (SWRCB)
2. Los Angeles Regional Water Quality Control Board
(LARWQCB)
1.04 QUALITY ASSURANCE
A. Comply with Project Quality Program Requirements (see 1.02
above).
B. Standard Provisions and General Monitoring and Reporting
Requirements and Waste Discharge Requirements of the State Water
Resources Control Board (SWRCB) and Los Angeles Regional Water
Quality Control Board (LARWQCB), apply to this Contract.
C. Operate DFT system with personnel licensed as required under
California law.
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Dewatering Fluid Treatment (DFT) 02 71 00 - 2 Baseline:
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D. Compliance with NPDES Permit: 1. Comply with NPDES permit
requirements. DFT Subcontractor is responsible for
conducting permit compliance testing program by utilizing
services of independent certified laboratory.
2. Testing program requirements - In accordance with
requirements of NPDES permit.
1.05 SUBMITTALS
A. Refer to Section 01 33 00 - Submittal Procedures, for
submittal requirements and procedures.
B. Basis of Design engineering report by DFT subcontractor
stating basis for process design, flow diagrams, proposed
equipment, planned treatment, chemical dosage rates, and
recommended groundwater sampling and analysis program for DFT
system prior to commencement of dewatering Work.
C. Working Drawings, signed and sealed by a registered civil
engineer licensed in the State of California, for review and
acceptance by Metro or its designee, upon acceptance of Basis of
Design report.
D. Storm drain connection permits.
E. Documentation: 1. Copies of required NPDES compliance testing
analyses and reports prepared for
submittal to Los Angeles Regional Water Quality Control Board
(LARWQCB) Submit first to Metro or its designee for acceptance,
return to Contractor for submittal to LARWQCB.
2. Copies of required groundwater analysis and testing data as
well as DFT operational
testing analyses and reports prepared for submittal to Metro or
its designee.
F. Groundwater analyses and testing data and operating and
process monitoring data in a monthly report to Metro or its
designee.
G. Weekly letter report summarizing daily and weekly chemical
analyses and chemical consumption.
H. Provide NPDES permit compliance testing as specified in
permit by an independent certified laboratory experienced in the
required analyses. Independent certified labor-atory - Approved by
Metro or its designee, and responsible for sending a duplicate copy
of analyses and reports directly to Metro or its designee. Prepare
and submit to Metro or its designee for review, a copy of permit
required compliance reports to Los Angeles Regional Water Quality
Control Board (LARWQCB).
I. Provide operational testing and analyses performed either by
independent certified testing laboratory or by DFT Subcontractor,
and a written report certified as accurate by
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Dewatering Fluid Treatment (DFT) 02 71 00 - 3 Baseline:
07/11/12
DFT Subcontractor, listing analyses and chemical usage rates, as
specified, on a weekly basis.
1.06 DEFINITIONS (Not Used)
1.07 WORKSITE CONDITIONS
A. Existing Reports and Data - Geotechnical Design Summary
Reports, Hydro-geologic investigations, and Environmental
Assessments conducted on behalf of Metro are available for
Contractor's use to determine concentrations of hydrogen sulfide
(H2S) and Benzene/Hydrocarbon/Gasoline (Benzene/HC) found along the
construction route as indicated in Information Available to
Bidders.
1.08 RESPONSIBILITIES OF CONTRACTORS A. Dewatering Fluid
Treatment (DFT) Subcontractors: 1. Use specialized Dewatering Fluid
Treatment (DFT) subcontractor. Contractor is fully
responsible to Metro for DFT operation.
2. Dewatering Fluid Treatment (DFT) subcontractor - Guarantee
design, operation, and performance of Dewatering Fluid Treatment
system. Design DFT system according to specified requirements
certify DFT system as designed will meet NPDES limitations, and
operate DFT system in compliance with NPDES effluent
limitations.
3. Specified DFT system is an integrated system; provide by
single qualified and experienced DFT subcontractor having total
responsibility for Work of this Section. System design,
fabrication, construction, start-up, operation, and testing -
Performed by qualified personnel possessing necessary equipment and
experience performing similar installations. Require DFT
subcontractor to assure overall system performance as
indicated.
4. Subcontract the Work under this Section to a qualified DFT
Subcontractor to perform said Work but understand that this does
not relieve the Contractor from responsibility under the Contract.
Although many references made herein are to Work requirements and
responsibilities of the DFT Subcontractor such references only mean
that responsibility passes to the DFT Subcontractor but in the
final analysis, responsibility rests with the Contractor.
5. Personnel employed for system engineering, supervision,
start-up, operational testing and training - Regular employees of
DFT Subcontractor. DFT Subcontractor fully responsible for
technical supervision of installation to ensure installation is
proper in all respects. Design - Sealed by California Registered
Engineer experienced in groundwater system design.
6. Contractor - Include with bid proposal certification required
above for proposed single DFT Subcontractor. Include certification
in proposal form, signed by authorized responsible representative,
and including the following statement:
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Dewatering Fluid Treatment (DFT) 02 71 00 - 4 Baseline:
07/11/12
a. (Name of Subcontractor) hereby certifies intent to assume and
execute full responsibility to select, to furnish, to supervise
installation and connection, to test, calibrate, validate, and
operate required equipment needed to comply with Section 02 71 00,
Dewatering Fluid Treatment (DFT).
b. In addition, it is understood that drawings and data will be
prepared and submitted by qualified personnel. Specified field
services will be performed by qualified personnel, and operating
personnel will be instructed, fully trained, and properly
licensed.
c. It is understood that the quotation offered provides for full
and complete compliance with the requirements of Section 02 71 00,
Dewatering Fluid Treatment (DFT) without exception.
B. As a minimum, Metro or its designee will provide Contractor
with representative water
quality data, if available 1. If current data is not available,
Contractor shall develop a groundwater sampling and
analysis plan for review and approval by Metro or its designee
that characterizes constituent concentrations slated for
removal/reduction in untreated groundwater
2. Design, fabricate, install, operate, and test DFT equipment
needed to treat
dewatering fluids produced by Contractor’s dewatering
operation.
C. Provide NPDES permit compliance testing as specified in
permit by an independent certified laboratory experienced in the
required analyses. Independent certified labor-atory - Approved by
Metro or its designee, and responsible for sending a duplicate copy
of analyses and reports directly to Metro or its designee. Prepare
and submit to Metro or its designee for review, a copy of permit
required compliance reports to Los Angeles Regional Water Quality
Control Board (LARWQCB).
D. Provide operational testing and analyses performed either by
independent certified testing laboratory or by DFT Subcontractor,
and a written report certified as accurate by DFT Subcontractor,
listing analyses and chemical usage rates, as specified, on a
weekly basis.
PART 2 - PRODUCTS
2.01 DESIGN
A. Have DFT Subcontractor shall design treatment system as
necessary to remove H2S and Benzene/HC/Gasoline from groundwater
pumped during dewatering operations. Provide equipment, materials,
and products necessary.
2.02 RECOMMENDED TECHNOLOGY
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Dewatering Fluid Treatment (DFT) 02 71 00 - 5 Baseline:
07/11/12
A. DFT Subcontractor shall design, construct, transport to
Worksite, erect, operate, provide a routine groundwater analysis
program, and maintain a groundwater treatment plant consisting of
two technologies.
B. H2S removal technology consists of direct pipeline injection
of hydrogen peroxide (H2O2),
with enough in pipe contact time to complete oxidation of H2S.
Bench scale laboratory tests indicate oxidation up to 10 mg/L of
H2S to sulfur is possible without exceeding effluent turbidity
limitation.
C. Benzene/HC/Gasoline removal technology consists of a phase
separation device followed by at least two granular activated
charcoal (GAC) filters in series. When Benzene/HC breakthrough is
detected for first filter, provide second filter capable of
providing treatment until carbon is replaced in expended unit. Size
GAC units so that carbon replacement will not be necessary in less
than a two week interval.
PART 3 - EXECUTION
3.01 PREPARATION
A. Prepare Worksite(s) for locating DFT plant, and provide
utility connections necessary to maintain operations. Move plant to
new location, if necessary, as Work progresses.
B. Install facilities where they will not interfere with
existing utilities or facilities, indicated utility relocations and
other design features. Arrange discharge lines to facilitate taking
water samples at each well head, prior to treatment, and at point
of NPDES discharge compliance.
3.02 PERFORMANCE A. DFT Subcontractor - Use Utilize treatment
technologies individually or in series (Phase
Separation/GAC prior to H2O2 injection) as quality of
groundwater requires. If groundwa-ter testing data indicates one or
both treatment technologies is not required, bring particular
system off-line and Treatment Operation Cost, Chemical Cost, Carbon
Cost, and Residue Disposal Costs will cease for the particular
treatment technology not currently engaged. Maintain off-line
treatment plant ready for immediate use should conditions
warrant.
B. DFT Subcontractor - Make decision to place in service or
remove from service one or both treatment technologies depending on
current groundwater analyses. Decisions - Reviewed and accepted by
the Metro or its designee.
C. Contractor - Provide flow meters, to measure both
instantaneous and accumulated flow volume downstream of treatment
facility and before discharge from Worksite. Meters - Accurate to
0.5 percent. A recorder and totalizer are required.
D. Overland surface flow of pumped effluent is not
permitted.
3.03 OPERATIONAL TESTING AND ANALYSIS
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Dewatering Fluid Treatment (DFT) 02 71 00 - 6 Baseline:
07/11/12
A. Provide readily accessible sampling station in both water
influent line upstream of treatment plant and water effluent line
downstream of treatment facility and before discharge from
Worksite.
B. As a minimum, conduct operational testing and analysis on a
daily basis for first week of DFT system start-up and
stabilization.
1. After first week of operations, testing frequency may be
reduced to weekly.
2. Take representative samples and test; include following:
INFLUENT EFFLUENT pH pH H2S H2S Benzene Benzene (both first and
second GAC
stages) TPH (Total Petroleum Hydrocarbon) TPH (both first and
second GAC stages)
H2O2 residual Instantaneous & totalized flow turbidity
C. Conduct influent testing during dewatering operations
regardless of whether or not either
treatment is being employed. Record effluent flows regardless of
whether treatment is being employed. If the treatment is being
employed for H2S removal, effluent testing for H2S and H2O2
residual conduct in addition to required influent testing. If
treatment is being employed for Benzene/HC removal, conduct first
and second stage GAC effluent testing for Benzene and TPH in
addition to required influent testing.
D. Sampling protocols and sample preservation method - Meet
requirements of Cal/EPA.
3.04 DISPOSAL OF RESIDUES/EFFLUENT
A. DFT Subcontractor - Use treatment technologies individually
or in series (Phase Separation/GAC prior to H2O2 injection) as
quality of groundwater requires. If groundwa-ter testing data
indicates one or both treatment technologies is not required, bring
particular system off-line and Treatment Operation Cost, Chemical
Cost, Carbon Cost, and Residue Disposal Costs will cease for the
particular treatment technology not currently engaged. Maintain
off-line treatment plant ready for immediate use should conditions
warrant.
B. DFT Subcontractor is responsible for proper removal and
disposal both floating and settled residues from phase separation
process and spent GAC. Provide trained personnel for these
operations familiar with safety and legal aspects of handling
hazardous wastes.
C. Dispose of effluent in closed conduits; do not damage public
or private property or create a nuisance or health hazard. Connect
closed conduits to existing storm drain system with sufficient
capacity for flow.
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Dewatering Fluid Treatment (DFT) 02 71 00 - 7 Baseline:
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D. DFT Subcontractor is responsible for ensuring residues are
removed in safe and timely manner. Remove residues from Worksite
immediately and treat, store and dispose of in a facility properly
licensed to perform these functions. Delays associated with
handling and disposing of residues are Contractor's
responsibility.
3.05 RECORDS OF CHEMICAL USAGE
A. Maintain daily log of chemical and carbon usage showing usage
rates in lb./day, gal/day, or some other convenient and accepted
measure. Totalize information and make part of monthly payment
report.
3.06 DUPLICATE TESTING AND ANALYSIS
A. Metro or its designee reserve the right to take samples at
any time or to take a split sample with that taken by DFT
Subcontractor to check accuracy of analyses. When Contractor's
testing is determined to be inaccurate by Metro or its designee,
Metro or its designee will use its own analysis to determine
Contractor's payment. Metro or its designee - Sole judge as to
testing accuracy and whose results to use for payment.
B. Where the Metro or its designee has determined Contractor's
testing is inaccurate, the Metro's testing cost including sampling,
analysis, testing, engineering, inspection, and transportation
costs, will be back charged to Contractor's account.
3.06 WATER TREATMENT UNIT
A. Provisions to accommodate a trailer-mounted Metro-furnished
Water Treatment Unit, of maximum dimensions of 70 feet long and 50
feet wide and 20 feet high and a 20,000 gallon capacity liquid
storage tank with approximate dimensions 30 feet long and 10 feet
wide and 15 feet high. The area selected by Contractor shall be
approximately level and provide for reasonable truck access for
maintenance and servicing of the storage tanks and Water Treatment
Unit. Include a means to tie into the Contractor's existing water
removal system downstream from any Contractor-furnished treatment
system and either a pumped or gravity flow piping system to deliver
the water to Metro-furnished Water Treatment Unit. Contractor shall
also provide a gravity flow or pumped piping system to transport
treated water from the Water Treatment Unit to a storm drain
discharge and a bypass line so water from the Contractor-furnished
water treatment system which meets NPDES Discharge Requirements is
sent directly to storm drain.
END OF SECTION 02 71 00
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Concrete Restoration 03 01 08 - 1 Baseline: 07/11/12
SECTION 03 01 08
CONCRETE RESTORATION
PART 1 - GENERAL
1.01 SECTION INCLUDES
A. Restoration of existing cast-in place and precast concrete,
and self-leveling cementitious underlayment for existing floor
surfaces; including placement procedures and finishes. Provide all
labor, equipment and materials necessary to complete the following
concrete repair work:
1. Cutting, chipping and preparation of all surfaces to receive
patching compound.
2. Mixing and transportation of patching compound.
3. Repairs to delaminated and scaled areas of existing
concrete.
4. Priming of repair areas and placement of patching
compound.
5. Finishing and curing of patches.
6. Repair of cracks.
1.02 RELATED SECTIONS
A. Section 01 33 00: Submittal Procedures
B. Section 01 43 10: Project Quality Program Requirements -
Design/Build or Section 01 43 20: Project Quality Program
Requirements - Design/Bid/Build (as applicable)
C. Section 01 43 38: Field Samples and Mock-Ups
D. Section 01 66 00: Product Storage and Handling
Requirements
E. Section 03 05 15: Portland Cement Concrete
F. Section 03 30 00: Cast-In-Place Concrete
G. Section 03 45 00: Architectural Precast Concrete
H. Section 07 92 00: Joint Sealants
1.03 REFERENCES
A. American Society for Testing and Materials (ASTM):
1. ASTM C39 - Compressive Strength of Cylindrical Concrete
Specimens
2. ASTM C109 - Compressive Strength of Hydraulic Cement Mortars
(Using 2-in or [50mm] Cube Specimens)
3. ASTM C881 - Epoxy-Resin-Base Bonding System for Concrete
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Concrete Restoration 03 01 08 - 2 Baseline: 07/11/12
4. ASTM C882 - Bond Strength of Epoxy Resin System Used with
Concrete by Slant Shear
5. ASTM C928 - Packaged, Dry Rapid-Hardening Cementitious
Materials for Concrete Repairs
6. ASTM C1059 - Latex Agents for Bonding Fresh to Hardened
Concrete
7. ASTM C1107 - Packaged Dry, Hydraulic-Cement Grout
(Nonshrink)
8. ASTM D570 - Water Absorbtion of Plastics
9. ASTM D638 - Tensile Properties of Plastics
10. ASTM D648 - Deflection Temperature of Plastic Under Flexural
Loads in the Edgewise Position
11. ASTM D695 - Compressive Properties of Rigid Plastics
12. ASTM D732 - Shear Strength of Plastics by Punch Tool
13. ASTM D790 - Flexural Properties of Unreinforced and
Reinforced Plastics and Electrical Insulating Materials
B. Regulatory Requirements:
1. In addition to the foregoing referenced standards, the
regulatory requirements which govern the work of this Section
include the following code requirements:
2. California Code of Regulations (CCR), Title 24, Part 2 -
California Building Code (CBC), Chapter 34, "Existing
Structures."
C. AASHTO:
1. AASHTO M235-90 - Testing of epoxy resin adhesive
1.04 QUALITY ASSURANCE
A. Comply with Project Quality Program Requirements (see 1.02
above).
B. Manufacturing qualifications: The manufacturer of the
specified product shall have in existence, for a minimum of 10
years, a program of training, certifying, and technically
supporting a nationally organized approved contractor program with
annual re-certification of its participants.
C. Contractor qualifications: Contractor shall be an Approved
Contractor of the manufacturer of the specified product, who has
completed a program of instruction in the use of the specified
repair material with at least five years experience in the type of
work involved, and provide a notarized certification from the
manufacturer attesting to their approved contractor status.
1. At the discretion of Metro or its designee, bids shall be
accepted from a contractor other than an approved contractor of the
manufacturer of the specified product. Said contractors shall
provide Metro or its designee with five job references where they
have successfully repaired structural and non-structural cracks
with the specified product.
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Concrete Restoration 03 01 08 - 3 Baseline: 07/11/12
D. Guarantee: The approved contractor of the manufacturer of the
specified product and manufacturer shall provide the Metro or its
designee with a joint and several guarantee on the application and
product covered in this specification.
1. The manufacturer of the specified product shall be under no
obligation to provide a guarantee on the specified product in this
specification should Metro or its designee opt for a contractor
other than an Approved Contractor of the manufacturer of the
specified product.
E. Provide a certificate stating that the repair material meets
the specified requirements and have the manufacturer's current
printed literature on the specified product.
F. Field Construction Mock-Ups: Prior to start of general
concrete restoration, prepare the following sample panels and
sample areas on building where directed by Metro or its designee.
Obtain Metro or its designee’s approval of sample before proceeding
with the work. Retain accepted panels/sample areas AM in
undisturbed condition, suitably marked, during restoration as a
standard for judging completed work.
1. Cleaning: Demonstrate materials and methods to be used for
cleaning for each type of concrete surface and condition on sample
panels each approximately 25 sq. ft. in area. Test adjacent
non-masonry materials for possible reaction with cleaning
materials. Allow waiting period of duration indicated, but not less
than 7 calendar days after completion of sample panels for negative
reactions.
2. Paint, Graffiti, and Metallic stain removal: Demonstrate
materials and methods to be used for paint, graffiti, and stain
removal for each type of surface and condition on sample panel 4
sq. ft. in area. The removal method or methods shall be tested on
an inconspicuous area of the building.
3. Crack Repair: Prepare a sample area for each type of crack
repair required for stone (i.e. hairline cracks and microscopic
cracks 1/64 to 1/16" in size; cracks and voids larger than 1/8").
Repair shall demonstrate methods and quality of workmanship
expected for crack repair.
4. Patching: Prepare on-building sample of each type of
construction to be patched, rebuilt and/or replaced (e.g. one
balcony surface, one deck area, one cornice unit, one window sill;
one wall area). Patching shall demonstrate methods and quality of
workmanship expected of repair work.
5. The samples of each type of repair work shall be done in an
area that will be exposed to the same weathering conditions as the
building. Allow samples to cure at least three days before
obtaining acceptance of color, texture and detailing match. Samples
shall be viewed from an approved distance.
6. Source of Materials: Obtain materials for Patching, coating,
sealing and crack repair from a single source manufacturer to
ensure match quality, color, texture and detailing.
1.05 SUBMITTALS
A. Refer to Section 01 33 00 – Submittals Procedures, for
submittal requirements and procedures.
B. Product Data: Submit manufacturer's technical data for each
product indicated including recommendations for their application
and use. Include test reports and certifications substantiating
that products comply with requirements.
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Concrete Restoration 03 01 08 - 4 Baseline: 07/11/12
C. Submit the following items in time to prevent delay of the
work and to allow adequate time for review and resubmittals, if
needed. Do not order materials or start work before receiving the
written approval.
D. Samples of all specified materials and Material Safety Data
Sheets (MSDS) as appropriate.
E. Certificates, except where the material is labeled with such
certification, by the producers, of the materials, that all
materials supplied comply with all the requirements of these
specifications and the appropriate standards.
F. Custom-matched patch samples, fabricated on pieces of
appropriate masonry from or on the building using the specified
repair mortar as required.
G. Provide purchase orders, shipping tickets, receipts, etc. to
prove that the specified materials were ordered and received.
H. Restoration Program: Submit written program for each phase of
restoration process including protection of surrounding material on
building and site during operations. Provide detail description of
material, methods and equipment to be used for each phase of
restoration work.
1. If alternative methods and materials to those indicated are
proposed for any phase of restoration work, provide written
description, including evidence of successful use on other,
comparable projects, and program of testing to demonstrate
effectiveness for use on this project.
1.06 DEFINITIONS (Not Used)
1.07 WORKSITE CONDITIONS
A. The station or building involved in this work will be in
continuous operation during the construction period. This will
require that the Contractor plan the Work carefully to work around
unavoidable obstacles in the prosecution of the Work. It will
require further that the Contractor complete some new construction
facilities required in the renovation work before proceeding with
the concrete restoration work.
B. Provide additional temporary facilities as may be required to
facilitate continuous, unobstructed station or building operations
during transitional construction work.
C. Environmental Conditions: Do not apply material if it is
raining or if rain appears to be imminent.
D. Protection: Precautions should be taken to avoid damage to
any surface near the work zone due to mixing and handling of the
specified repair material.
1.08 DELIVERY, STORAGE, AND HANDLING
A. Refer to Section 0166 00 – Product Storage and Handling
Requirements, for general requirements for product delivery,
storage, and handling procedures.
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Concrete Restoration 03 01 08 - 5 Baseline: 07/11/12
B. Deliver materials to site in manufacturer's original unopened
containers and packaging, bearing labels as to type and names of
products and manufacturers.
C. Deliver and store restoration material in manufacturer's
original, unopened containers with the grade, batch and production
data shown on the container or packaging.
D. Protect restoration materials during storage and construction
from wetting by rain, snow or ground water, and from staining or
intermixture with earth or other types of materials.
E. Protect grout, mortar and other materials from deterioration
by moisture and temperature. Store in a dry location or in
waterproof containers. Keep containers tightly closed and away from
open flames. Protect liquid components from freezing. Comply with
manufacturer's recommendations for minimum and maximum temperature
requirements for storage.
F. Comply with the manufacturer's written specifications and
recommendations for mixing, application, and curing of grouts and
patching materials.
1.09 RESPONSIBILITIES OF CONTRACTOR
A. Protect persons, vehicles, building site and surrounding
buildings from injury resulting from concrete restoration work.
B. Clean masonry surfaces only when air temperatures are above
40°F and will remain so until concrete has dried out, but for not
less than 7 days after completion of cleaning.
C. Do not perform any patching unless air temperatures are
between 40°F and 86°F and will remain so for at least 48 hours
after completion of work.
D. Do not perform any patching work if precipitation rain is
expected. In case of unexpected precipitation, work shall cease and
all uncured material shall be adequately protected with an
impermeable polyethylene sheet.
E. If either the ambient or subsurface temperature is expected
to fall between 35°F and 40°F during curing and ultimate drying of
the patching compound, then the cold weather precautions outlined
in item 7, below, of this section of the specification shall be
followed.
F. If ambient or surface temperature is expected to rise above
86°F during application and curing of the patching compound, then
the hot weather precautions outlined in item H of this section of
the specifications shall be followed.
G. Cold Weather Precautions:
1. SYSTEM 44-FS grades shall be substituted for SYSTEM 44
Regular grades. Do not mix or place different grades together.
2. Curing times shall be extended to compensate for lower
temperature cure.
3. Do not proceed if temperatures will drop below freezing
before patching compound has reached final set. Any material
disrupted by early freezing must be removed and replaced under
appropriate controls or conditions.
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4. If auxiliary heating will be used to protect freshly placed
materials from freezing, equipment must not directly vent exhaust
gases onto the repair materials or into repair enclosure air. This
may cause carbonation and low strength. Use moderate temperatures
and heated air or radiant heat.
H. Hot Weather Precautions:
1. SYSTEM 44 Regular grades shall be substituted for FS grades.
Do not mix or place different grades together.
2. All materials shall be kept cool, stored out of direct
sun.
3. Precooling of subsurface shall be carried out by continuous
wetting at least one hour before placing patching compounds. This
shall be done by covering or draping the entire repair area with
burlap and by continuously keeping the burlap wet. The burlap shall
be removed just prior to the patching of each area, as work
proceeds.
4. In hot, dry, windy weather, repair areas shall be covered or
draped with burlap for a minimum of 3 hours after patch placement,
to avoid rapid drying of the patches. Maximum wet cure time shall
not exceed 24 hours.
I. Prevent masonry patching materials from staining the face of
other surfaces to be left exposed. Immediately remove all patching
materials that come in contact with such surfaces.
J. Cover partially completed work when work is not in
progress.
K. Protect sills, ledges and projections from droppings.
1.10 SEQUENCING / SCHEDULING
A. Perform concrete restoration work in the following:
1. Remove paint, stains and plant material from all
surfaces.
2. Remove existing unsound materials from areas indicated to be
restored.
3. Pressure wash building and repair surfaces as indicated.
4. Patch and repair existing concrete structures as
indicated.
5. Provide consolidation/water repellent treatment for concrete
structures as indicated. 6. Provide special coating over indicated
sections as specified.
PART 2 - PRODUCTS
2.01 EPOXY
A. Provide epoxy grout for restoration of concrete with
following performance criteria:
B. Properties of the mixed epoxy resin adhesive used for the
\pressure injection grouting:
1. Pot Life: 20-30 minutes
2. Tack -Free Time to Touch (3-5 mils): 5-7 hours
3. Initial Viscosity (Brookfield Viscometer, Spindle #2, Speed
100): 300-450 cps.
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4. Color: clear, amber
C. Properties of the cured epoxy resin adhesive used for the
pressure injection grouting:
1. Compressive Properties (ASTM D-695) at 28 days
a. Compressive Strength: 10,000 psi min.
b. Modulus of Elasticity: 300,000 psi min.
2. Tensile Properties (ASTM D-638) at 14 days
a. Tensile Strength: 7000 psi min.
b. Elongation at Break: 3-5%
c. Modulus of Elasticity: 340,000 psi min.
3. Flexural Properties (ASTM D-790) at 14 days
a. Flexural Strength (Modulus of Rupture): 12,000 psi min.
b. Tangent Modulus of Elasticity in Bending: 300,000 psi
min.
4. Shear Strength (ASTM D-732) at 14 days: 4500 psi min.
5. Total Water Absorption (ASTM D-570) at 7 days: 1.5% max. (2
hour boil)
6. Bond Strength (ASTM C-882) Hardened Concrete to Hardened
Concrete
a. 2 day (dry cure): 2400 psi min.
b. 14 day (moist cure): 2300 psi min.
7. Deflection Temperature (ASTM D-648) at 14 days: 108F min.
(fiber stress loading = 264 psi)
8. The epoxy resin adhesive shall conform to ASTM C-881, and
AASHTO M235-90
9. The epoxy resin adhesive shall be approved by the United
States Department of Agriculture
2.02 CAP SEAL
A. Cap seal shall have the following performance criteria:
B. Properties of the mixed epoxy resin adhesive used for the
sealing of cracks and porting devices:
1. Pot Life: 25-45 minutes
2. Tack-Free Time to Touch: 2-3 hours
3. Consistency (1/2 in. thick): non-sag
4. Color: gray
C. Properties of the cured epoxy resin adhesive used for the
sealing of cracks and porting devices:
1. Compressive Properties (ASTM D-695) at 28 days
a. Compressive Strength: 10,000 psi min.
b. Modulus of Elasticity: 700,000 psi min.
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2. Tensile Properties (ASTM D-638) at 14 days
a. Tensile Strength: 3000 psi min.
b. Elongation at Break: 0.3% min.
c. Modulus of Elasticity: 630,000 psi min.
3. Flexural Properties (ASTM D-790) at 14 days
a. Flexural Strength (Modulus of Rupture): 3700 psi min.
b. Tangent Modulus of Elasticity in Bending: 850,000 psi
min.
4. Shear Strength (ASTM D-732) at 14 days: 2800 psi min.
5. Total Water Absorption (ASTM D-570) at 7 days: 1.0% max. (2
hour boil)
6. Bond Strength (ASTM C-882) Hardened Concrete to Hardened
Concrete
a. 2 day (dry cure): 2800 psi min.
b. 14 day (moist cure): 2000 psi min.
7. Deflection Temperature (ASTM D-648) at 14 days: 104F min.
(fiber stress loading - 264 psi)
8. The epoxy resin adhesive shall conform to ASTM C-881, Type I,
Grade 3, Class B and C
9. The epoxy resin adhesive shall be approved by the United
States Department of Agriculture.
2.03 NON-SHRINK CEMENTITIOUS GROUT
A. Non-shrink cementitious grout shall be used for crack widths
larger than 3/16 inch and shall meet the following performance
criteria:
B. Properties of the mixed portland cement grout:
1. Time of Set (ASTM C-191)
a. Initial Set: 3.0 hours min.
b. Final Set: 6.5 hours max.
2. Flow (CRD C-62I): 100-124%
3. Color: concrete gray
4. The grout shall not exhibit bleeding.
5. The grout shall not segregate.
6. The grout shall be pumpable through standard grout pumping
equipment.
C. Properties of the cured portland cement grout:
1. Compressive Strength (CRD C-621)
a. 1 day: 3800 psi min.
b. 28 day: 7600 psi min.
2. Splitting Tensile Strength (ASTM C-496) at 28 days: 500 psi
min.
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3. Flexural Strength (ASTM C-580) at 28 days: 1200 psi min.
4. Bond Strength (ASTM C-882 Modified) Plastic grout to hardened
concrete at 28 days (moist cure): 1950 psi min.
5. Expansion (CRD C-621) at 28 days: +0.015% min.
D. The grout shall exhibit expansion when tested in accordance
to ASTM C-827.
E. The grout shall exhibit positive expansion when tested in
accordance to ASTM C-827.
F. The grout shall conform to United States Army Corps of
Engineers Specifications CRD C-621.
G. The grout shall be approved by the United States Department
of Agriculture.
2.04 POLYMER-MODIFIED PORTLAND CEMENT MORTAR
A. Polymer-modified portland cement mortar shall be used for
spall repair and shall meet the following performance criteria:
B. Properties of the mixed polymer-modified portland cement
mortar:
1. Working Time: 10-15 minutes
2. Finishing Time: 20-60 minutes
3. Color: concrete gray
C. Properties of the cured polymer-modified portland cement
mortar shall be as specified below:
1. Compressive Strength (ASTM C-109 Modified)
a. 4 hour: 250 psi min.
b. 1 day: 3800 psi min.
c. 28 day: 7200 psi min.
D. Splitting Tensile Strength (ASTM C-496) at 28 days: 850 psi
min.
E. Flexural Strength (Modulus of Rupture)(ASTM C-78) at 28 days:
1650 psi min.
F. Rapid Freeze/Thaw Durability (ASTM C-666; Procedure A)
1. Relative Durability Factor at 300 cycles: 90 min.
G. Bond Strength (ASTM C-882 Modified) at 28 days: 2500 psi
min.
H. Thermal Compatibility (ASTM C-884 Modified): passes test
min.
I. Abrasion (Taber Abrader) at 7 days
1. Weight Loss: 8.9 gm max. (H-22 wheel; 1000 gm load; 1000
cycles)
J. The portland-modified portland cement mortar shall be
approved by the United States Department of Agriculture.
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K. The polymer-modified portland cement mortar shall not produce
a vapor barrier.
2.05 CLEANING AGENT
A. Mild solution of hydrochloric acid or muriatic acid, for
washing of stubborn stains on concrete.
2.06 PAINT
A. Paint for touchup work shall be an exterior acrylic-latex
masonry paint, flat texture, color as required to match adjacent
surfaces.
2.07 COMPONENTS
A. Epoxy resin adhesive for pressure injection of cracks
1. Component "A" shall be a modified epoxy resin of the
epichiorohydrin bisphenol A type containing suitable viscosity
control agents. It shall not contain butyl glyoidyl ether.
2. Component "B" shall be an aliphatic diamine containing
suitable viscosity control agents and accelerators.
3. The ratio of Component "A":Component "B" shall be 2:1 by
volume.
B. The epoxy resin adhesive for the sealing of cracks and
porting devices.
1. Component "A" shall be a modified epoxy resin of the
epichiorohydrin bisphenol A type containing suitable viscosity
control agents and pigments. It shall not contain butyl glyoidyl
ether.
2. Component “B” shall be primarily a reaction product of a
selected amine blend with an epoxy resin of the epichiorohydrin
bisphenol A type containing suitable viscosity control agents,
pigments and accelerators.
3. The ratio of Component "A":Component "B" shall be 2:1 by
volume.
4. The material shall not contain asbestos.
C. Porting devices as required for either manual or automated
application. Porting devices for automated application shall be
supplied from the manufacturer of the pressure injection
equipment.
D. Portland cement grout
1. The portland cement grout shall be a non-shrink, non-metallic
composition containing a blend of selected portland cements,
plasticizing/water-reducing admixtures and shrinkage compensating
agents. The shrinkage agents shall compensate for shrinkage in both
the plastic and hardened state.
E. Materials for forming, as required for the designated work,
shall be approved by the Engineer.
F. Curing compound, conforming to ASTM C-309, as required for
the designated work, shall be approved by the Engineer.
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G. Polymer-modified portland cement mortar
1. Component A shall be a liquid polymer emulsion of an acrylic
copolymer base and additives. This acrylic copolymer shall have the
following properties:
a. pH: 4.5 - 6.5
b. Film Forming Temperature: 73F max.
c. Tear Strength: 950 psi min.
d. Elongation at Break: 500% min.
e. Particle Size: less than 0.1 micron
2. Component B shall be a blend of selected portland cements,
specially graded aggregates, admixtures for controlling setting
time, water reducers for workability, a corrosion
3. The ratio of Component A: Component B shall be 1:5.2 by
weight and 1:7.2 by weight
4. The material shall not contain asbestos, chlorides, nitrates,
. added gypsum, added lime, or high aluminum cements.
5. The material shall be non-combustible, either before or after
cure.
6. The polymer-modified portland cement mortar shall be supplied
in a factory proportioned unit.
7. The polymer-modified portland cement mortar must be placeable
from 1/8 inch to 1-1/2 inch in depth per lift.
PART 3 - EXECUTION
3.01 EXAMINATION
A. Use the following repair criteria as a function of crack
width:
1. For crack widths less than or equal to 1/32": No repair work
required.
2. For crack widths greater than 1/32" and less than or equal to
3/16”: Use epoxy injection.
3. For crack widths greater than 3/16" and less-than or equal to
1/2": Use non-shrink grout injection.
4. For crack widths greater than 1/2": Use spall repair.
B. Do not cut or alter structural members when not indicated
without prior approval of Metro or its designee.
C. Finish or refinish as required to match adjacent
finishes.
3.02 SURFACE PREPARATION
A. Cracks: The cracks and adjacent substrate must be cleaned and
made sound with a wire brush by hand or other methods. Remove dust,
laitance, grease, curing
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compounds, waxes, impregnations, foreign particles,
efflorescence and other bond inhibiting materials from the cracks
by mechanical means.
1. For epoxy injection, repair area may be dry or damp, but free
of standing water prior to product application.
2. For non-shrink comentitiouos grout insure that repair area is
not less than 1/2" in width. Prior to product application the
surface should be brought to a saturated surface condition.
B. Spalls:
1. The surface must be mechanically prepared. Areas to be
repaired must be clean, sound and free of contaminants. All loose
and deteriorated concrete shall be removed by mechanical means
approved by Metro or its designee. Saw cut perimeter 1/2" maximum.
Chip concrete substrate to obtain a surface profile of (±1/16",
±1/8")* in depth with a new fractured aggregate surface. Be sure
the area to be repaired is not less than 1/8" to 1/2".* Where
reinforcing steel with active corrosion is encountered, the
following procedures will be used: sandblast reinforcing steel to
remove all contaminants and rust. Determine section loss, splice
where more than 15-25% loss as directed by Metro or its designee.
If half of the diameter of the rebar is exposed, chip out behind
the reinforcing steel, 1/2" minimum for mortar only and 3 times the
largest aggregate size for extended mixes.
2. When forms are applicable, all forms should retain repair
material without leakage. Forms should be lined or coated with
release agent for easy removal. All form work shall be approved by
Metro or its designee.
3. Cracks in the substrate in the area of the patching or
overlay work must be treated as directly by Metro or its
designee.
4. Extend all existing control and expansion joints through any
patch or overlay. Install new joints as directed by Metro or its
designee. Fill all joints as directed by Metro or its designee.
5. Refer to ACI criteria for recommendation on the specific
product to be used.
Reference: ACI 318 "Splicing" ACI 347 "Formwork" ACI 546.1
"Guide for Repair of Concrete Bridge Superstructures”
3.03 CRACK REPAIR USING EPOXY OR NON-SHRINK GROUT INJECTION
A. Mixing of material
1. Epoxy
a. Epoxy resin adhesive for sealing cracks and porting
devices.
1. Manual: Premix each component. Proportion equal parts by
volume of Component "A" and Component "B" into a clean, dry mixing
pail. Mix for 3 minutes min. with a jiffy paddle on a low-speed
(400-600 rpm) drill. Mix only that quantity of material that can be
used within its pot life (25-45 minutes at 73°F).
2. Automated: The injection equipment is used to meter and mix
the two components of the epoxy resin adhesive and dispense the
product onto the
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prepared substrate and around the porting devices. The unit
shall be portable and be equipped with positive ratio control of
exact proportions of the two components of the epoxy resin adhesive
at the nozzle. The pumps shall be air powered or electric and shall
provide an in-line mixing and metering system and shall contain
drain-back plugs.
b. Epoxy resin adhesive for pressure injection grouting:
1. Manual: Premix each component. Proportion two parts of
Component "A" to one part Component "B" by volume into a clean, dry
mixing pail. Mix thoroughly for 3 minutes min. with a jiffy paddle
on a low speed (400-600 rpm) drill. Mix only that quantity of
material that can be used within its pot life (20-30 minutes at
73°F).
2. Automated: The injection equipment is used to meter and mix
the two components of the epoxy resin adhesive and dispense the
product into the prepared cracks. The unit shall be portable and be
equipped with positive displacement-type pumps with interlock to
provide positive ratio control of exact proportions of the two
components of the epoxy resin adhesive at the nozzle. The pumps
shall be air powered on electric and shall provide an in-line
mixing and metering system and shall contain drain-back plugs.
2. Non-shrink cementitious grout
a. Portland cement grout:
1. Mix manually or mechanically. Manually mix in a wheelbarrow
or mortarbox. Mechanically mix with a low-speed (400-600 rpm) drill
and jiffy paddle or in an appropriate sized mortar mixer. Add an
appropriate quantity of water to the mixing container to achieve
the desired consistency. DO NOT OVERWATER. While mixing the bag of
powder is slowly added to the mixer. Mix to a uniform consistency
of a minimum of 2 minutes. Mix temperature should be maintained at
70°F-75°F, using cold or warm water accordingly.
B. Application - Epoxy injection and non-shrink grout
injection:
1. Epoxy injection
a. The epoxy resin adhesive for sealing the cracks and porting
devices:
1. Set porting devices as required by the manufacturer. Spacing
of the porting devices should not exceed the thickness of the
substrate. Spacing of the porting devices shall be accomplished as
required to achieve the travel of the epoxy resin adhesive for the
pressure injection grouting between ports and fill the cracks to
the maximum. On structures open on both sides, provide porting
devices on opposite sides at staggered elevations. Apply the mixed
epoxy resin adhesive for sealing over the cracks and around each
porting device to provide an adequate seal to prevent the escape of
the epoxy resin adhesive for the injection grouting. Where required
by Metro or its designee, apply the epoxy resin adhesive for
sealing in such a manner that minimal defacing or discoloration of
the substrate shall result.
b. The epoxy resin adhesive for the pressure injection
grouting.
1. Manual: Load the mixed epoxy resin adhesive for grouting into
a disposable caulking cartridge or bulk-loading caulking gun.'
Inject the prepared cracks with a constant pressure in order to
achieve maximum filling and penetration without the inclusion of
air pockets or voids in the epoxy resin adhesive.
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Begin the pressure injection at the lowest port and continue
until there is the appearance of the epoxy resin adhesive at an
adjacent port, thus indicating travel. When travel is indicated, to
discontinue or continue the pressure injection from that port
should be made by the contractor, based on their experience, with
the approval of Metro or its designee. Continue the procedure until
all pressure injectable cracks have been filled.
2. Automated: Dispense the epoxy resin adhesive for grouting
under constant pressure in accordance with procedures recommended
by the equipment manufacturer or as required to achieve maximum
filling and penetration of the prepared cracks without the
inclusion of air pockets or voids in the epoxy resin adhesive. The
pressure injection of single or multiple, ports, by the use of a
manifold system, is possible. This decision should be made by the
contractor, based upon their experience, with the approval of Metro
o rits designee. Continue the approved procedure until all pressure
injectable cracks have been filled.
c. If penetration of any cracks is impossible, notify the
Inspector of Record within 24 hours of discontinuing the injection
procedure. If modification of the proposed procedure is required to
fill the cracks, submit said modification in writing to Metro or
its deisgnee for acceptance prior to proceeding.
d. Adhere to all limitation and cautions for the epoxy resin
adhesives in the manufacturers current printed literature.
e. Clean up
1. After the epoxy resin adhesive for grouting has cured,
removal of the epoxy resin adhesive for sealing and porting devices
shall be removed as required by Metro or its designee. Clean the
substrate in a manner to produce a finish appearance acceptable to
Metro or its designee.
2. The uncured epoxy resin adhesives can be cleaned from tools
with an approved solvent. The cured epoxy resin adhesive can only
be removed mechanically.
3. Leave finished work and work area in a neat, clean condition
without evidence of spillovers onto adjacent areas.
2. Non-shrink cementitious grout injection.
a. Within 15 minutes of mixing pump the grout into the prepared
crack under constant pressure until there is appearance of the
grout at an adjacent port, thus indicating travel. When travel is
indicated cap off original port and move to adjacent port and
continue pumping the grout. A decision to discontinue or continue
the pressure injection from the original port should be made by the
contractor based on their experience, with approval from Metro or
its designee. Continue the procedure until all injectable cracks
have been filled. After the grout has achieved its final set,
remove any forms and trim or shape to the desired profile, if
required.
b. Wet cure for a minimum of 3 days or apply a curing compound
that conforms to ASTM C-309 as approved by Metro or its
designee.
c. Adhere to all limitation and cautions for the portland
cement, non-shrink, non-metallic grout in the manufacturers printed
literature.
d. Clean up
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1. The uncured portland cement grout can be cleaned from tools
with water. The cured portland cement grout can only be removed
mechanically.
2. Leave finished work and work area in a neat, clean condition
without evidence of spillovers onto t areas.
3.04 SPALL REPAIR
A. Mixing of material.
1. Non-shrink cementitious grout.
a. Mix manually or mechanically. Manually mix in a wheelbarrow
or mortarbox. Mechanically mix with a low-speed (400-600 rpm) drill
and jiffy paddle or in an appropriate sized mortar mixer. Add an
appropriate quantity of water to the mixing container to achieve
the desired consistency. DO NOT OVERWATER. While mixing the bag of
powder is slowly added to the mixer. Mix to a uniform consistency
of a minimum of 2 minutes. Mix temperature should be maintained at
70°F-75°F, using cold or warm water accordingly.
2. Polymer modified portland cement mortar.
a. Mix manually or mechanically. Manually mix in a wheel barrow
or mortar box. Mechanically mix with a mud paddle and low speed
(400-600 rpm) drill. Pour approximately 4/5 gal Component A into
the mixing container. Add Component B while continuing to mix. Mix
to a uniform consistency for a maximum of three minutes. Add
remaining Component A to mix if a more loose consistency is
desired. If manual mixing takes more than three minutes, mix small
quantities. Should smaller quantities be needed, be sure the
components are dosed in the correct ratio and that the Component B
is uniformly pre-mixed before batching.
B. Application - Spall Repair:
1. Non-shrink cementitious grout placement procedure.
a. Within 15 minutes of mixing pump the grout into the prepared
form. Work in a manner to avoid air entrapment with a variable
pressure pump. Vibrate the form while pumping, as required, to
achieve flow and compaction. Flowable grout must be confined in
either the horizontal or vertical direction leaving a minimum of
exposed surface. After the grout has achieved its final set, remove
any forms and trim or shape to the desired profile if required.
b. Wet cure for a minimum of 3 days or apply a curing compound
that conforms to ASTM C-309 as approved by Metro or its
designee.
c. Adhere to all limitation and cautions for the portland
cement, non-shrink, non-metallic grout in the manufacturers printed
literature.
2. Polymer modified portland cement mortar placement
procedure.
a. At the time of application, the substrate should be saturated
surface dry with no standing water. Mortar must be scrubbed into
substrate filling all pores and voids. While he scrub coat is still
plastic, force material against edge of repair, working toward
center. After filling, consolidate, then screed. Allow mortar to
set to desired stiffness. Then finish with trowel for smooth
surface. Wood float for rough surface. Areas where the depth of the
repair to sound concrete, is greater than 1-1/2 in.; repair will be
made in lifts of 1-1/2 in. maximum thickness. The top surface of
each lift shall be scored so as to produce a roughened surface for
the
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next lift. The preceding lift should be allowed to reach final
set before applying fresh material. The fresh mortar must be
scrubbed into the preceding lift. There is no limit to the number
of lifts that may be used.
b. As per ACI recommendations for portland cement concrete
curing is required. Only when ambient conditions of moisture,
humidity, temperature and wind are sufficiently favorable is curing
optional. Moist cure with wet burlap and polyethylene, a fine mist
of water or water based* compatible curing compound. Moist curing
should commence immediately after finishing. If necessary protect
newly applied material from rain. To prevent from freezing, cover
with insulating material.
Setting time is dependent on temperature and humidity.
∗ Pretesting of curing compound is recommended.
c. Adhere to all limitations and cautions for the
polymer-modified portland cement mortar in the manufacturers
current printed literature.
d. Clean-up
1. The uncured portland cement grout can be cleaned from tools
with water. The cured portland cement grout can only be removed
mechanically.
2. The uncured polymer-modified portland cement mortar can be
cleaned from tools with water. The cured polymer-modified portland
cement mortar can only be removed mechanically.
3. Leave finished work and work area in a neat, clean condition
without evidence of spillovers onto adjacent areas.
4. After the concrete patches have cured a minimum of 3 days,
the Contractor shall any irregularities or departures from a plane
surface by grinding, rubbing with a carborundum stone or other
means approved by Metro or its designee.
3.05 TESTING
A. Epoxy
1. Epoxy samples are to be taken every 30 minutes during
injection. Epoxy shall be placed in a small container and the
set-up time compared with the performance criteria. If set-up time
differs contact structural engineer before further application.
2. Contractor shall be required to take core tests to check the
penetration of the epoxy.
a. 6 inch minimum diameter by full wall thickness cores will be
required at locations selected by structural engineer in
concurrence with Metro Quality Control Inspector.
b. Cores will be taken every 100 linear feet of treated cracks
or as otherwise directed by the structural engineer.
c. If any reinforcing steel is contacted during the core
drilling, the contractor shall cease drilling and relocate the core
drill to clear the reinforcing steel.
d. When a core demonstrates that the epoxy has penetrated less
than 90 percent of the crack volume within the core, the work shall
be deemed as not meeting the requirements of these specifications,
and the Contractor shall submit a proposal for the purpose of
achieving 90 percent penetration at such locations for the
Engineer's approval. The proposal shall consist of an improved
method of epoxy
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reinjection and/or concrete removals and patchings. This
proposal shall indicate the limits of rework.
e. All resulting core holes shall be filled with non shrink
grout or other approved structural patch. Minimum required patch
strength shall not be less than 5000 psi.
3.06 INSPECTION
A. General: A manufacturer’s representative shall inspect all
repair procedures and verify that the work is in conformance with
these specifications.
B. Continuous special inspection shall be required for
installation of cap seal and epoxy injection by a licensed
inspector approved by Metro Quality Control Manager.
C. Inspection shall include the following items:
1. Written contractor certification by epoxy manufacturer prior
to beginning repair work.
2. Verification of epoxy set-up time using pressure injection
equipment prior to epoxying any cracks at the beginning of each day
and any time after the equipment has been turned back on after
being shut-off, see testing.
3. Check for leakage of epoxy from under the cap seal and
cementitious grout from under form and cementitious grout.
4. Monitoring of epoxy flow through injection ports for
determining when to cap-off lower injection ports and move to upper
adjacent injection ports.
5. Core sample within 48 hours of first epoxy or cementitious
grout injection to verify penetration. See testing. Verification of
epoxy and cementitious grout injection for all core samples is
required.
3.07 CLEANING
A. Where existing concrete surfaces are indicated to be cleaned
or washed to remove dirt, dust, and stains, such surfaces shall be
washed clean to an even and uniform effect, free of stains