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Vashon Island
KCLS Vashon LibraryRenovation and Addition
Schematic Design Document
Prepared b yBohlin C ywinski Jackson
December 10, 2010
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Team
CLIENT TEAM
OwnerKing County Library System960 Newport WayIssaquah WA 98027Kay Johnso n, Director Facilities Developm ent
GeotechnicalPanGEO, Inc.3213 Eastlake Avenue East, Suite B
Seattle, WA 9 8102Siew L. Tan, Principal
SurveyPace Engineers, Inc1601 Second Avenue, Suite 1000Seattle WA 9 8101Neil Sherman Cabbage
DESIGN TEAM
ArchitectBohlin C ywinski Jackson1932 First Avenue, Suite 916Seattle, WA 9 8101Peter Boh lin, FAIA, Lead DesignerRobert Miller, AIA, LEED, Principal in Charge
Terrence Wagner, AIA, Project ManagerCivilPace Engineers, Inc1601 Second Avenue, Suite 1000Seattle WA 9 8101Chris Rhinehart, P.E. Sr. Project M anager
LandscapeAllwo rth Design
1100 North 35th
StreetSeattle WA 9 8103Randy Allworth, Principle
StructuralPCS Structural Solutions811 First Avenue, Suite 510Seattle WA 9 8104
Mechanical & ElectricalFlack + Kurtz600 University St., Suite 500Seattle WA 98 101Henry DiGregrio, Senior Vice PresidentKimb erly Paulson P.E., LEED AP Senior Assoc iate
LightingFlack + Kurtz600 University St., Suite 500Seattle WA 98 101Henry DiGregrio, Senior Vice PresidentMelanie Taylor IALD, LEED AP Senior Associate
AcousticalThe Greenbusch G roup
1900 West Nickerson Street, Suite 201Seattle WA 98 119Julie Wiebusc h, INCE LEED AP, President
CostRobinson Company101 Stewart Street, Suite 925
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General Information
MAAC $2,750,000
Delivery Metho d Design/B id/Build
Anticipated Bid Date November 1, 2011
Duration of Construction 12 Months
LEED/Sustainability LEED Acc reditation nor being sought. Look ing for intelligent sustainable designdecisions
Estimated Sq Ft Breakdown Existing Building to be Renovated 6187 sq ft
Existing Crawl Space to Remain 6187 sq ft
New Main Floor 3399 sq ft
New Lower Level Mec hanical 400 sq ft
New Crawl Space 2912 sq ft
Totals
Main Floor Plate 958 6 sf
Craw l Space and Low er Level Mec hanical 9499 sf
Note: Gross square feet
Phasing Requirements No phasing requirements
Bid Alternates Not yet identified
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Schedule
2 1
Novemb er Com plete Ground Lease Agreements with Vashon ParksDistrict
Prepare Schematic Design (SD) Package and Cost Estimate
Submit SD Package and Cost Estimate to KCLS
SD Package and Co st Estimate Approved b y KCLS
Decemb er Begin Design Developm ent (DD)
2 11
January
Set up Pre-Submittal Meeting with King County DDES
February Prepare DD Design Package and Cost Estimate
Submit DD Design Package and Cost Estimate
March DD Design Package and Cost Estimate App roved by KCLS
Construction Do cum ents (CD) Phase starts
May Subm it Drawings to DDES for County Permits
Seek Temporary Library location for Library Holds and ChoiceReads
June - Octo ber Prepare 75% CD Cost Estimate and Drawing Package
Submit 75% CD Package and Co st Estimate
75% C D Package Approved by KCLS
Com plete CD Design and Identify Bid Alternates
Respond to DDES Staff Comm ents and Clarifications
Novemb er-December Incorporate DDES Permit Com ments and Decisions
Prepare Bidders Package
2 12
January Issue Bid Package
February-March Bidding
Open Bids and Award Contract
Secure Bonds, Insurance and Sub Contractors
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April Library Reopens
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Zoning and CodeAnalysis
Zoning Location 17210 Vashon Highway SW
Parcel Numb er 29230 39044Zoning R-4-P and R-12
Zoning Overlays VS-P27
VS-P28
Building Built 1983
Sprinklers No
SEPA Project is exemp t as it is a com merc ial structure less
than 12,000sf with 40 or fewer parking spaces per
Code Occup ancy Types Multipurpose Type A-3
Library (Collections) Type A-3
Library (Staff) Type B
Const ruction Type Type V-B Limited to (1) story and 6,000 sf
Section 506.3 Automatic Fire Sprinkler System
Increase allows for 30 0% increase for one story Type
V-B Buildings
Note: Bu ilding is fully sprink lered in lieu of 1 hour
construction. One hour separation is required
betw een Occupancy Types A-3 and Type B.
Plumbing Occup ancy Square Footage Load Factor Total Load
Building Gross 9303 sf
Net Occupied
A-3 7320 sf 30/ sf 244
B 1006 sf 200/ sf 5.03
249
124.5 / per sex
Water Closets Required (per Table 29 02.1)
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Attachments
Soils Report Pan Geo
Hazardous Materials Report N/ A
MEP Systems Narrative WSP Flack + Kurtz
Civil Narrative Pace Engineering
Acoustical Narrative The Greenbusch Group
Cost Estimate The Robinson Com pany
Architectural Schematic Drawing Set
A1.00 Site Plan (includes grading and extent of Landsc ape)
A2.00 New Floor Plan
A2.01 Demo Floor Plan
A2.10 Foundation Plan
A2.20 Attic Plan/ Top of Trusses
A2.3 Roof Plan
A3.01 Building Cross Section
A3.02 Building Longitud inal Drawings
A4.01 Building Elevations
A4.02 Building Elevations
Structural Schematic Drawing Set
S2.00 Foundation Plan
S2.10 Low Roof / Attic Framing Plan S2.20 Roof Framing Plan
Data/Telecom Infrastructure Drawing
Octob er 29, 2010 IT Schematic
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The existing parking lot is to remain as designed. It will be repaved and re-stripped once construction is complete
as it will be used for construction support and new utilities will need to be trenched though it. Subtle changes will
be m ade to the handicap spaces to m ake them van accessible and meet current cod e.
The existing concrete seating area and trees at the entry are to be removed to open the entry up to the
surrounding park and make it more welcoming. A new bench and the potential for public art are being planned.
Renovation and Addition
The existing 6200 sq ft building is to be gut renovated and brought up to current standards for seismic and life
safety issues. New additions totaling roughly 3799 sq ft are to be added to the existing building.
The three new add itions are:
A glu-lam framed Reading Room and M ultipurpose Room of 2873 sq ft with 400 sq ft Mechanical Room and
2473 sq ft of crawl space below. Room is framed w ith glu-lam bents at 4-0 o.c. with continuous aluminum
framed window wall clipped to the glu-lam structure with a green roof.
A wood framed Childrens Area of 416 sq ft with a partial crawl space below
A new glu-lam framed Entry Vestibule of 110 sq ft slab on grade construction.
The primary goals of the renovation and add ition are:
To open up the Library to Ober Park
To provide m ore space for patrons w ho use the Library including significantly more seating
To provide a larger Meeting Room that is contiguous with the Reading Room
To upgrade services for patrons including better rest rooms, more space and greater access to power for use
with laptops and other devices
To provide the Library with imp roved thermal comfort and better natural and artificial lighting To improve life safety with upgraded seismic construction and the addition of a complete sprinkler system
To reduce resource consumption and become more environmentally sensitive with green roofs and rain
gardens to deal with runoff.
Roof
Existing Building Existing metal roof to be removed and replaced with new 3-tab asphalt shingle.
New Roofs New Reading Room is to have a green roof by Xero Floor or Hydro tech. Green roof
system is to be lightweight extensive garden roof consisting of sedums in a 3 +/-
dep th soil planting.
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At the M eeting Room storage boxes and around the new Childrens Room
extension a wood com posite such as Trespa is to be used.
Interior Finishes
Flooring Floors at the Reading Room , Meeting Room and Cop y Room are to be 36 sq
carpet tiles by M illiken (the KCLS standard).
Flooring at the entry vestibule will be a walk off grate.
Floors at the Rest Rooms, Staff Work Room, Staff Break Room, Office andTelecom/Data are to be sheet good Mannington Commercial sheet vinyl
Walls Unless noted below all walls are to be 5/8 painted gyp board .
The Telecom /Data room will have plywood backer board
All walls at the w et side of the Public Rest Room s will be tile to 8- 0. All other wallswill be and behind the tile will be cementitious backer board.
The janitors closet w ill have FRP or p lastic laminate panels to 3- 0w ill metal edges.
All walls at the Meeting Room are to be Trespa or some similar wood composite
prod uct as is the feature wall at the Entry Vestibule and Self Check.
Ceilings Ceilings at the Reading Room and Meeting Room will be exposed to view ACC
plywood structure w ith a clear finish.
Ceilings at the Childrens Area will be a dropped wood slat with acoustical
treatment above.
Ceilings at the Workroom, Breakroom, Office and storage are to be drop acoustical
tile ce iling
Ceilings at the Study Rooms, Public Restrooms and Staff WC are to be painted
gypsum wall board.
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Exterior metalwork is to be painted with Benjamin Moore 2-part Aliphatic Acrylic
Urethane.
Casework
Locations Included Workroo m, Staff Break Room , Staff WC, Public Rest Room vanities, Meeting Room
Kitchenette, Cyberbar, Study Rooms, Copier
Circu lation Desk OFOI
Com puter Tables OFOI
Library Shelving OFOI Estey Cant ilever Library shelving in Arc tic White .
Shelving End Panels OFOI
Shelving Lighting OFOI
Equipment
Safe OFOI one Diebold Large Manager Comp artment, Mo del 20537- R77Y
Boo k Drops Kingsly lockable type through wall book drop s in bid
Appliances OFOI
Furniture
FFE Covers all mo vable furniture in pub lic and staff areas including systems furniture at
staff area. FFE is a separate bud get item.
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Cost Estimate Execut ive Summary
BUILDING
DIVISION DESCRIPTION TOTAL
A1010 STANDARD FOUNDATIONS 92,427
A1030 SLAB ON GRADE 13,762
B1010 FLOOR CONSTRUCTION 66,440
B1020 ROOF CONSTRUCTION 150,549
B2010 EXTERIOR WALLS 73,924
B2020 EXTERIOR WINDOWS 192,848
B2030 EXTERIOR DOORS 20,300
B3010 ROOF COVERINGS 229,282
C1010 PARTITIONS 69,433
C1020 INTERIOR DOORS 19,400
C1030 FITTINGS 23,759
C3010 WALL FINISHES 54,890
C3020 FLOOR FINISHES 40,345
C3030 CEILING FINISHES 36,488D2090 OTHER PLUMBING SYSTEMS 68,160
D3090 OTHER HVAC SYSTEMS & EQUIPMENT 249,975
D4090 OTHER FIRE PROTECTION SYSTEMS 44,074
D5010 ELECTRICAL SERVICE & DISTRIBUTION 117,768
D5020 LIGHTING & BRANCH WIRING 141,797
D5030 COMMUNICATIONS & SECURITY SYSTEMS 84,075
E1090 OTHER EQUIPMENT 7,000E2010 FIXED FURNISHINGS 70,958
F2010 BUILDING ELEMENTS DEMOLITION 66,315
Z1010 ADMINISTRATION 315,000
ESTIMATE SUBTOTAL 2,248,967
DESIGN CONTINGENCY @ 7.50% 168,673
SUBTOTAL 2,417,640GENERAL CONTRACTOR'S OH & P @ 6.50% 157,147
SUBTOTAL 2,574,786
ESCALATION TO 15-MAR-12 (3.00%/YR) @ 3.99% 102,734
TOTAL BUILDING 2,677,520
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SITE
DIVISION DESCRIPTION TOTAL
G1010 SITE CLEARING 15,400
G1020 SITE DEMOLITION & RELOCATIONS 10,476
G1030 SITE EARTHWORK 60,000
G2020 PARKING LOTS 19,009
G2030 PEDESTRIAN PAVING 8,010
G2040 SITE DEVELOPMENT 5,000
G2050 LANDSCAPING
PLANTING 30,500
TOPSOIL AND MULCH 18,500GREEN ROOF (IN ROOF COVERINGS
ABOVE) 0
IRRIGATION 20,500
RAIN GARDEN STRUCTURAL CONCRETE 5,500
SITE FIXTURES 11,500
G3010 WATER SUPPLY & DISTRIBUTION SYSTEMS 20,500
G3020 SANITARY SEWER 0
G3030 STORM SEWER 15,500
G4010 ELECTRICAL DISTRIBUTION 25,744
ESTIMATE SUBTOTAL 266,139
DESIGN CONTINGENCY @ 7.50% 19,960
SUBTOTAL 286,099
GENERAL CONTRACTOR'S OH & P @ 6.50% 18,596
SUBTOTAL 304,695
ESCALATION TO 15-MAR-12 (3.00%/YR) @ 3.99% 12,157
TOTAL SITE 316,853
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TOTALS
DESCRIPTION TOTAL
BUILDING 2,677,520
SITEWORK 316,853
TOTAL BUILDING AND SITEWORK 2,994,373
MACC 2,750,000
ESTIMATE OVER MACC (244,373)
COST REDUCTIONS
DESCRIPTION TOTAL
SQUARE FOOTAGE
DELETE ONE BAY AT NEW ADDITION 25,690
ELIMNATE VAULTING AT CIRCULATION 72,145
MATERIAL QUALITY
KEEP EAST CLERESTORY WINDOWS 14,280 12,000+19%
DELETE EXTERIOR VENETIAN SUNSHADES 31,188 26,208+19%
CHANGE STAFF AREA CEILINGS TO ACT FROM GWB 4,874 4,096+19%
REDUCE AREA OF ACT GLUED TO GYP CEILING 2,998 2,520+19%
CHANGE ROOF FROM METAL TO SHINGLE 77,766 65,350+19%
DELETE MOTORIZED BLINDS (KEEP CONDUIT) 25,704 21,600+19%
TOTAL COST REDUCTIONS 254,645
ESTIMATE UNDER THE MACC 10,272
ADDITIONAL COST REDUCTION ALTERNATES IDENTIFIED
DESCRIPTION TOTALDELETE GREEN ROOF 25,132 21,120+19%
DELETE TRESPA AT INTERIOR 24,990 21,000+19%
DELETE MOTORIZED WINDOWS (KEEP OPERABLE) 17,609 5,950+8,848+19%
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COST REDUCTIONS: SQUARE FOOTAGE
DELETE ONE BAY AT NEW ADDITION 25,690
ELIMNATE VAULTING AT CIRCULATION 72,145
COST REDUCTION: MATERIAL QUALITY
KEEP EAST CLERESTORY WINDOWS 14,280 12,000+19%DELETE EXTERIOR VENETIAN
SUNSHADES 31,188 26,208+19%CHANGE STAFF AREA CEILINGS TO ACT FROM
GWB 4,874 4,096+19%
REDUCE AREA OF ACT GLUED TO GYP CEILING 2,998 2,520+19%CHANGE ROOF FROM METAL TO
SHINGLE 77,766 65,350+19%
DELETE MOTORIZED BLINDS (KEEP CONDUIT) 25,704 21,600+19%
TOTAL COST REDUCTIONS 254,645
ESTIMATE UNDER THE MACC 10,272 ADD TO DESIGN
CONTINGENCY
ADDITIONAL DEDUCT ALTERNATES IDENTIFIED
DELETE GREEN ROOF 25,132 21,120+19%DELETE TRESPA AT INTERIOR 24,990 21,000+19%DELETE MOTORIZED WINDOWS (KEEP
OPERABLE) 17,609 5,950+8,848+19%
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Geotechnical & EarthquakeEngineering Consultants
June 28, 2010
File No. 10-066
Ms. Kay Johnson
King County Library System
960 Newport Way NorthwestIssaquah, WA 98027
Re: Geotechnical Engineering Report
KCLS Vashon Public Library
17210 Vashon Highway SW
Vashon Island, Washington
Dear Ms. Johnson:
Please find attached our geotechnical engineering report to assist you and the project
team with design and construction of the proposed alterations to the Vashon Public
Library on Vashon Island. This report documents the subsurface conditions at the site
and our geotechnical engineering recommendations for the proposed project.
Based on the results of our subsurface exploration program and our review of existinginformation, the project site is underlain by competent soils (glacial till) at shallow
depths. These conditions are conducive to the use of conventional shallow foundations to
support the new structure. Due to historic grading of the site, up to 7 feet of fill soil exists
over the competent native soil, and some localized over-excavation of unsuitable soils
and replacement with structural fill will be required, especially in the northeast corner of
the proposed addition.
We appreciate the opportunity to work with you and the design team on this project.
Please call if there are any questions.
Sincerely,
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TABLE OF CONTENTS
1.0 INTRODUCTION....................................................................................................... 1
2.0 SITE AND PROJECT DESCRIPTION ................................................................... 1
3.0 SUBSURFACE EXPLORATIONS........................................................................... 2
4.0 SUBSURFACE CONDITIONS ................................................................................. 2
4.1SOILS ......................................................................................................................... 2
4.2GROUNDWATER......................................................................................................... 3
5.0 EXISTING BUILDING CONDITION ..................................................................... 3
6.0 SEISMIC CONSIDERATIONS ................................................................................ 4
6.1SEISMIC DESIGN PARAMETERS................................................................................... 4
6.2LIQUEFACTION ASSESSMENT ..................................................................................... 4
7.0 GEOTECHNICAL RECOMMENDATIONS.......................................................... 4
7.1FOOTING DESIGN PARAMETERS ................................................................................. 4
7.1.1 Bearing Pressure and Subgrade Preparation ................................................... 5
7.1.2 Lateral Resistance.............................................................................................. 5
7.2BELOW-GRADE WALLS.............................................................................................. 6
7.2.1 Lateral Earth Pressures..................................................................................... 67.2.2 Surcharge Loads................................................................................................ 6
7.2.3 Lateral Resistance.............................................................................................. 6
7.2.4 Wall Drainage.................................................................................................... 6
7.2.5 Wall Backfill ...................................................................................................... 7
7.3PROPOSED PEDESTRIAN WALKWAY........................................................................... 7
8.0 CONSTRUCTION CONSIDERATIONS ................................................................ 7
8.1SITE PREPARATION..................................................................................................... 7
8.2TEMPORARY EXCAVATIONS....................................................................................... 8
8.3MATERIAL REUSE ...................................................................................................... 8
8.4STRUCTURAL FILL...................................................................................................... 8
8.5EROSION AND DRAINAGE CONSIDERATIONS .............................................................. 9
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TABLE OF CONTENTS (continued)
LIST OF FIGURES
Figure 1 Vicinity Map
Figure 2 Site and Exploration Plan
Appendix A: Hand Boring Summary Logs
Figure A-1 Terms and Symbols for Boring and Test Pit Logs
Figure A-2 Hand Boring Summary Logs HB-1 through HB-3
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GEOTECHNICAL ENGINEERING REPORT
KCLSVASHON PUBLIC LIBRARY
17210VASHON HIGHWAY SWVASHON ISLAND,WASHINGTON
______________________________________________________________________________
1.0 INTRODUCTION
This report presents the results of geotechnical engineering studies that were undertaken to
support the design and construction of the proposed alterations to the Vashon Public Library, onVashon Island, Washington. Our study was performed in accordance with the King County
Library System On Call Services Agreement effective April 26, 2010, and work order number
one, dated April 26, 2010. Our service scope included reviewing readily available geologic data,
conducting a site reconnaissance, advancing hand borings at the site, and developing the
conclusions and recommendations presented in this report.
2.0 SITE AND PROJECT DESCRIPTION
The project site is located at 17210 Vashon Highway SW, on Vashon Island, Washington (see
Figure 1). The site is currently occupied by the KCLS Vashon Public Library, which is located
in the southeast corner of the site, and an asphalt paved parking area, which is located along the
southern portion of the site (see Figure 2). The remainder of the site is occupied by lawn, and
serves as a community park. The existing library is a one-story structure with an unfinished
crawl space.
The general topography of the area slopes gently to the north and east, while the site topography
has been modified by past grading activities, and is undulating. Based on our review of the site
survey prepared by PACE Engineering, dated May 11, 2006, the relatively level parking area at
the south end of the site is at an elevation of about 350 feet, which generally matches the
finished floor elevation of the existing library. The northern portion of the site is generally level,
with only a gentle slope down to the northeast, and has an elevation ranging from about 343 to
340 feet. Between the relatively level southern and northern portions of the site described above,
previous grading activities created soils berms approximately 4 to 6 feet tall. In particular, soil
has been bermed up against the north and west sides of the existing library. Plate 1 below shows
existing conditions at the project site.
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King County Library System
Vashon Public Library 17210 Vashon Highway SW, Vashon Island, WA
June 28, 2010
Plate 1: Looking south at the existing library. The proposed addition will be located to the north of the library in
the picture foreground.
3.0 SUBSURFACE EXPLORATIONS
To explore subsurface conditions at the subject site, we advanced three hand borings (HB-1
through HB-3) around the perimeter of the proposed addition. The approximate boring locations
are indicated on Figure 2, and were located based on relative distances from existing site
features. The hand borings were advanced utilizing a 3-inch diameter hand auger. An engineer
from PanGEO performed the explorations and logged the subsurface conditions encountered in
the test holes. The relative density of granular soils and the relative consistency of cohesive soils
were generally estimated based on the drilling resistance encountered throughout the depth of the
explorations, and on the penetration resistance of the soil from a -inch diameter steel hand
probe. After the test holes were completed, they were backfilled with excavated spoils, and the
surface tamped firm. The excavated soils were described using the system outlined on Figure A-1, and the summary hand boring logs are included in Appendix A.
4.0 SUBSURFACE CONDITIONS
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King County Library System
Vashon Public Library 17210 Vashon Highway SW, Vashon Island, WA
June 28, 2010
Hand boring HB-1 was located on an existing soil berm near the northeast corner of the proposedaddition. HB-1 encountered about 7 feet of loose fill material before encountering the top of the
native medium dense to dense glacial till. Based on our visual estimate, and the site topographic
survey provided to us, we estimated that the glacial till was located at approximately elevation
340 feet.
Hand boring HB -2, which was located near the northwest corner of the proposed addition in the
relatively level grass area, encountered only about 9 inches of topsoil and fill before
encountering the native glacial till. Based on our visual estimate, the glacial till at this boring
location exists at approximately elevation 343 feet.
Finally, hand boring HB-3, which was advanced adjacent to the existing library building near the
southwest corner of the proposed addition, encountered about 6 feet of loose fill soils over the
native medium dense to dense glacial till. At this location we estimated the glacial till to be
located at an approximate elevation of 344 feet.
4.2GROUNDWATER
Groundwater was not observed within the depths of the three hand borings advanced at the site.
However, we observed moist to wet soils within about one foot above the contact with the native
glacial till. Due to the dense nature of the till, and high fines content, we anticipate that water
becomes perched on the till layer during certain times of the year. In addition, it is common for
glacial till to contain layers of clean sand and gravel that often contain water. It is anticipatedthat groundwater conditions will vary depending on the season, local subsurface conditions, and
other factors.
5.0 EXISTING BUILDING CONDITION
We conducted a brief reconnaissance of the existing library structure to observe the performance
and condition of the building. Our reconnaissance of the exterior of the building revealed thatthe brick facade was in generally good condition, with almost no visible signs of stress cracks,
settlement or distress. We also excavated one test hole near the northwest corner of the existing
structure to verify the depth of the existing footing. The test hole, which was adjacent to hand
boring HB-3, encountered the top of footing about 5 feet below the ground surface which would
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King County Library System
Vashon Public Library 17210 Vashon Highway SW, Vashon Island, WA
June 28, 2010
7.1.1 Bearing Pressure and Subgrade Preparation
For footings bearing on the native medium dense to dense glacial till, or properly compacted
structural fill, we recommend sizing the footings using a bearing pressure of 3,000 psf. The
bearing pressure may be increased by one-third for transient loads such as seismic and wind
loads. As described above, we anticipate that up to 4 feet of over-excavation of unsuitable loose
fill soils and replacement with properly compacted granular structural fill will be required in the
northern portion of the library addition. The structural fill should extend horizontally at least
one foot beyond the edge of the footings. Prior to placing the structural fill, the exposed
subgrade, which should consist of the native, undisturbed medium dense to dense silty sand soil
(till) should be compacted to a dense condition. If the subgrade at that level is yielding after re-
compaction, it should be over-excavated and replaced with compacted structural fill. Footing
excavations and compaction should be observed by a representative of PanGEO, prior to placing
forms or rebar, to verify that conditions are as anticipated in this report.
All footings should be embedded a minimum of 18 inches below final finished grade. Stripfootings should have a minimum width of 18 inches; isolated column footings should have a
minimum width of 24 inches.
Total and differential settlements are anticipated to be within tolerable limits for footings
designed and constructed as discussed above. Footing settlement under static loading conditions
are estimated to be less than about 1 inch and differential settlement across the building should
be less than about inch. Most of the anticipated settlements are likely to occur duringconstruction as dead loads are applied.
The contractor should be aware that the site soils are moisture sensitive due to its high fines
content, and will become disturbed and soft when exposed to inclement weather conditions. As
a result, depending on the weather condition at the time of footing construction and the actual
soil conditions encountered, it may be necessary to place 2 to 3 inches of lean-mix concrete on
the exposed footing subgrade to protect against moisture and disturbance. In addition, water
bearing sand seams could be present at or near the footing excavations. If sand seams are
encountered, the contractor should be prepared to dewater the footing excavations using sumps
and pumps to allow for proper subgrade preparation.
7 1 2 Lateral Resistance
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King County Library System
Vashon Public Library 17210 Vashon Highway SW, Vashon Island, WA
June 28, 2010
perforated footing drain surrounded with washed rock and a geotextile fabric be installed alongthe base of the footing around the exterior of the addition.
7.2.5 Wall Backfill
The below grade walls may be backfilled with native site soils provided that they can be
adequately compacted and that a pre-fabricated drainage mat is installed over the exterior wall
face for drainage. Because the native site soils contain a high percentage of fines (i.e. silt andclay), they have poor drainage characteristics. In addition, these materials are moisture sensitive
and are difficult or impossible to compact during wet weather. In the winter, an all-weather
material should be used as structural backfill, such as City of Seattle Type 17 material or
Washington State Department of Transportation Gravel Borrow (Standard Specification 9-
03.14(1)).
Wall backfill should be moisture conditioned to within about 3 percent of optimum moisture
content, placed in loose, horizontal lifts less than 8 inches in thickness, and systematicallycompacted to a dense and relatively unyielding condition and to at least 95 percent of the
maximum dry density, as determined using test method ASTM D 1557. Within 5 feet of the
wall, the backfill should be compacted to 90 percent of the maximum dry density.
7.3PROPOSED PEDESTRIAN WALKWAY
We understand that the existing pedestrian walkway may be relocated to the east of its currentlocation, such that it runs along the western side of the new library addition. In general, based
on our subsurface exploration HB-3, we anticipate that the relocated walkway will be underlain
by up to about 6 feet of fill soil. To improve the performance of the walkway, which we
anticipate will be asphalt surfaced, we recommend that a minimum of 4 inches of properly
compacted crushed surfacing top course (CSTC) be placed directly below the concrete walk to
function as a leveling course and to provide firm uniform support for the walkway. Prior to
crushed rock placement and compaction, the exposed subgrade should be heavily compacted to adense condition. If soft or loose yielding soils, or soils with prevalent organics, are encountered
within the subgrade, they should be over-excavated a maximum of one foot and replaced with
properly compacted structural fill.
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King County Library System
Vashon Public Library 17210 Vashon Highway SW, Vashon Island, WA
June 28, 2010
of approximately 8 inches will generally be necessary. Actual stripping depth should be basedon field observation at the time of construction. In no case should the stripped or grubbed
materials be used as structural fill or mixed with material to be used as structural fill. The stripped
materials may be wasted on site in non-structural landscaping areas or they may be exported.
8.2TEMPORARY EXCAVATIONS
We anticipate that footing excavations will encounter up to approximately 7 feet of fill soil
overlying the native medium dense to dense glacial till soils. Temporary excavations greater
than 4 feet deep should be properly sloped or shored. All temporary excavations should be
performed in accordance with Part N of WAC (Washington Administrative Code) 296-155. The
contractor is responsible for maintaining safe excavation slopes and/or shoring. For planning
purposes, the temporary excavations may be sloped to as steep as 1(H):1(V) within the fill soil
and (H):1(V) within the glacial till soils. Temporary excavation slope angles should be re-
evaluated in the field during construction, however, based on actual observed soil conditions.
8.3MATERIAL REUSE
We anticipate that the surficial fill consists of till spoil that was generated during construction of
the original library or during past grading in the vicinity of the site. The contractor should be
aware that such soils, as well as the native glacial till, are moisture sensitive. The re-use of these
materials as structural fill may be possible only if they are properly handled and if the earthwork
occurs during periods of dry weather. If use of the existing soils is planned, any excavated soil
should be stockpiled and protected with plastic sheeting to prevent softening from rainfall.
Alternatively, if the excavated soils become wet and unsuitable, or are exported from the site, we
recommend that backfill soil consist of granular structural fill as described below.
8.4STRUCTURAL FILL
Structural fill may be required to backfill footings and behind below grade walls. Granularimport soils, such as Seattle Type 17 or Gravel Borrow from the WSDOT Standard
Specifications (9-03.14(1)) should be used as an all weather structural fill during wet weather, or
if on-site soils cannot be properly re-used. The structural fill should be moisture conditioned to
within about 3 percent of optimum moisture content, placed in loose, horizontal lifts less than 8
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King County Library System
Vashon Public Library 17210 Vashon Highway SW, Vashon Island, WA
June 28, 2010
8.5EROSION AND DRAINAGE CONSIDERATIONS
Surface runoff can be controlled during construction by careful grading practices. Typically, this
includes the construction of shallow, upgrade perimeter ditches or low earthen berms to collect
runoff and prevent water from entering excavations. All collected water should be directed to a
positive and permanent discharge system such as a storm sewer. It should be noted that the site
soils are prone to surficial erosion. Special care should be taken to avoid surface water on open
cut excavations and exposed slopes should be protected with visqueen.
Permanent control of surface water should be incorporated in the final grading design. Finished
surfaces should be graded to slope away from building foundations. Water should not be
allowed to pond immediately adjacent to buildings or paved areas. Roof down spout drainage
should be collected and tightlined to appropriate outlets. All drainage should be directed into
conduits which carry runoff away from the building and paved areas into storm drain systems or
other appropriate outlets. Roof runoff should not be discharged into the footing drains.
8.6WET WEATHER EARTHWORK RECOMMENDATIONS
In our opinion, the proposed project may be accomplished during the winter without adversely
affecting the site stability. However, earthwork construction performed during the drier summer
months likely will be more economical. Winter construction will require the implementation of
best management erosion and sedimentation control practice to reduce the chances of off-site
sediment transport. The site soils contain a high percentage of fines and are moisture sensitive.Any subgrade soils that become softened either by disturbance or rainfall should be removed and
replaced with properly compacted granular structural fill or lean-mix concrete. General
recommendations relative to earthwork performed in wet conditions are presented below:
Site stripping, excavation and subgrade preparation should be followed promptly by
the placement and compaction of clean structural fill, capillary break material or base
course material;
The size and type of construction equipment used may have to be limited to prevent
soil disturbance;
During wet weather, the allowable fines content (material by weight passing the #200
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King County Library System
Vashon Public Library 17210 Vashon Highway SW, Vashon Island, WA
June 28, 2010
Bales of straw and/or geotextile silt fences should be strategically located to controlerosion and the movement of soil.
9.0 ADDITIONAL SERVICES
To confirm that our recommendations are properly incorporated into the design and construction
of the proposed library addition, PanGEO should be retained to conduct a review of the final
project plans and specifications, and to perform a field-monitoring program during construction.As part of the permitting process, geotechnical construction inspection services may also be
required by the local jurisdiction. Specifically, we anticipate that geotechnical construction
monitoring services may include the following:
Review of final project plans and specifications
Over-excavation depth determination;
Footing subgrade verification prior to construction of foundation elements;
Verification of compaction of structural fill;
Observation of installation and performance of erosion control measures; and
Other consultation as may be required during construction
Modifications to our recommendations presented in this report may be necessary, based on the
actual conditions encountered during construction.
10.0 LIMITATIONS
We have prepared this report for use by the King County Library System and the project design
team. Recommendations contained in this report are based on a site reconnaissance, a
subsurface exploration program, review of pertinent subsurface information, and our
understanding of the project. The study was performed using a mutually agreed-upon scope ofwork.
Variations in soil conditions may exist between the locations of the explorations and the actual
conditions underlying the site. The nature and extent of soil variations may not be evident until
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King County Library System
Vashon Public Library 17210 Vashon Highway SW, Vashon Island, WA
June 28, 2010
procedures, except as specifically described in our report for consideration in design.Additionally, the scope of our work specifically excludes the assessment of environmental
characteristics, particularly those involving hazardous substances. We are not mold consultants
nor are our recommendations to be interpreted as being preventative of mold development. A
mold specialist should be consulted for all mold-related issues.
This report may be used only by the client and for the purposes stated, within a reasonable time
from its issuance. Land use, site conditions (both off and on-site), or other factors including
advances in our understanding of applied science, may change over time and could materially
affect our findings. Therefore, this report should not be relied upon after 24 months from its
issuance. PanGEO should be notified if the project is delayed by more than 24 months from the
date of this report so that we may review the applicability of our conclusions considering the
time lapse.
It is the clients responsibility to see that all parties to this project, including the designer,
contractor, subcontractors, etc., are made aware of this report in its entirety. The use ofinformation contained in this report for bidding purposes should be done at the contractors
option and risk. Any party other than the client who wishes to use this report shall notify
PanGEO of such intended use and for permission to copy this report. Based on the intended use
of the report, PanGEO may require that additional work be performed and that an updated report
be reissued. Noncompliance with any of these requirements will release PanGEO from any
liability resulting from the use this report.
We appreciate the opportunity to be of service.
PanGEO Inc.
i C ib S
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King County Library System
Vashon Public Library 17210 Vashon Highway SW, Vashon Island, WA
June 28, 2010
11.0 REFERENCES
Booth, D. B., Troost, K.G., Wisher, A. P., 2007, The Geologic Map of King County,
Washington, scale 1:100,000.
International Building Code (IBC), 2009, International Code Council.
WSDOT, 2010, Standard Specifications for Road, Bridges, and Municipal Construction.
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Site Location
Image Credit: Google Maps
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Approx Scale
Number and Approximate Locationof Hand Boring
Legend:
HB-1
VASHONHIG
HWAYSW
HB-1
HB-2
HB-3
346348
350
352
354
354
352
350
342
340
338
344
346
348
King County Library System
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King County Library System
Vashon Public Library 17210 Vashon Highway SW, Vashon Island, WA
June 28, 2010
APPENDIX A
HAND BORING SUMMARY LOGS
TEST SYMBOLS
SAND / GRAVEL SILT / CLAY
RELATIVE DENSITY / CONSISTENCYfor In Situ and L aboratory Testslisted in "Other Tests" column.
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MONITORING WELL
50
Density
DESCRIPTIONS OF SOIL STRUCTURES
Breaks along defined planes
Fracture planes that are polished or glossy
Angular soil lumps that resist breakdown
Soil that is broken and mixed
Less than one per foot
More than one per foot
Angle between bedding plane and a planenormal to core axis
Very Loose
Loose
Med. DenseDense
Very Dense
SPTN-values
App rox . Undrained ShearStrength (psf)
50
30
Layered:
Laminated:
Lens:
Interlayered:
Pocket:
Homogeneous:
Highly Organic Soils
Silt and Clay
Very Soft
Soft
Med. StiffStiff
Very Stiff
Hard
BottomofBoring
CBR
Comp
Con
DD
DS
%F
GS
Perm
PP
R
SG
TV
TXC
UCC
50%or more passing #200 sieve
Groundwater Level at time of drilling (ATD)Static Groundwater Level
Cement / Concrete Seal
Bentonite grout / seal
Silica sand backfill
Slotted tip
Slough
4000
Fissured:
Slickensided:
Blocky:
Disrupted:
Scattered:
Numerous:
BCN:
COMPONENT DEFINITIONS
UNIFIED SOIL CLASSIFICATION SYSTEM
MAJOR DIVISIONS GROUP DESCRIPTIONS
Notes:
King County Library System
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g y y y
Vashon Public Library 17210 Vashon Highway SW, Vashon Island, WA
June 28, 2010
Hand Boring HB-1
Location: Northeast corner of proposed addition (see Figure 2)
Approximate ground surface elevation: 347 feet
Ground Surface Condition: Sod
Depth (ft) Material Description
0 3 4-inches of sod over loose, moist, brown, silty SAND with some gravel
and trace organics (TOPSOIL/FILL)
3 7 Loose, moist to wet, brown, fine sandy SILT with some gravel (FILL)
7 7 Medium dense to dense, moist to wet, tan/brown, silty SAND with
trace gravel (TILL)
Hand boring terminated approximately 7 feet below ground surface.
Hand Boring HB-2
Location: Northwest corner of proposed addition (see Figure 2)
Approximate ground surface elevation: 344 feet
Ground Surface Condition: Sod
Depth (ft) Material Description
0 4-inches of sod over loose, moist, brown, silty SAND with some
organics (TOPSOIL) 1 Medium dense to very dense, moist, gray brown, silty SAND with trace
gravel (TILL)
Hand boring terminated approximately 1 feet below ground surface.
Hand Boring HB-3
Location: Southwest corner of proposed addition (see Figure 2)
Approximate ground surface elevation: 350 feet
Ground Surface Conditions: Topsoil
Depth (ft) Material Description
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Engineers | Planners | Surveyors
Vashon Island Library
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Vashon Island LibraryPACE Proj. No. 10 605Schematic Phase Design Narrative8 November 2010
4. Paving:Minor sawcut and re-grading will be required in existing asphalt parking lot at two accessibleparking spaces to meet ADA requirements. The asphalt parking lot will receive 2-inch asphaltoverlay and be re-striped for parking, including 2 ADA van spaces.
A new pervious concrete path will be built from the existing library parking lot to the Parksparking lot to the north.
No street improvements are included.
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allworth designL A N D S C A P E A R C H I T E C T S
Vashon Island LibraryLandscape Architectural NarrativeSchematic Design PhaseNovember 24, 2010
Note: Refer to the Schematic Landscape Plan dated November 24, 2010 and prepared incoordination with this narrative.
1. Soil Preparation:Soil preparation will include restored lawn areas, planting areas, rooftop planting area, and the raingarden. Lawn areas will receive 8 inches of sandy loam topsoil over sloped subgrade. Ground levelplanting areas will receive 8 inches of a three way mix of sand, loam and composted organic
material plus a two inch top dressing of composted mulch. The rooftop planting will receiveapproximately 4 inches of lightweight topsoil mix. See the civil engineers narrative for soil depthat the rain garden. Rain garden soil wil l be composed of a mix of sand and composted organicmaterial. Note that general proposed grading of landscape areas is indicated on the Landscape PlanL1.0. Grading will ul timately be included on the civil engineers drawings.
2. Irrigation:The areas of new lawn will be irrigated as part of the existing Vashon Parks Department irrigation
system. Since the areas of new lawn include grade changes and other construction impacts, theexisting irrigation system in these areas will need to be removed and replaced with new irrigationlines and heads. All other landscape areas including new planting areas adjacent to the library,rooftop planting, and rain garden planting will be irrigated with a new system (separate from theparks department system) that will include a new point of connection, backflow prevention device,and automatic controller at the library
11/ 24/ 2010Vashon Island Library
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Vashon Island LibraryPage 2 of 2
3. Planting:Plantings include new medium to large scale shade trees, small scale trees, low plants andgroundcovers adjacent to the building, rain garden plantings, and rooftop planting.
Several medium to large scale shade trees are proposed in the area to the west of the library entry.Proposed species being considered are Ginkgo (Ginkgo biloba), Green Ash (Fraxinuspennsylvanica), or European Beech (Fagus sylvatica) The shade trees are located far enough fromthe building that their canopy will not likely extend over the roof line for at least 50 years. Theshade trees will be high branched to allow visibility beneath the foliage. Serviceberry (Amelanchiersp.) is proposed as a small scale tree. These trees will be spaced widely to the west and north of the
library to add spring flowers (white) and interest to the environment without obstructing views orthe negatively impacting the open character of the site. Serviceberry is drought tolerant.
Proposed low plants and groundcovers include Dwarf Oregon Grape (Mahonia repens) andKinnickinick (Arctostaphyllos uva-ursi) along the west side of the building. Sword Fern(Polystichum munitum), Salal (Gaultheria shallon), and Low Oregon Grape (Mahonia nervosa) areproposed at the north side of the building. Japanese Holly (Ilex crenata) is proposed along thesouth edge of the library building. All of the low plants and groundcovers being considered are
drought tolerant and all but the Japanese Holly are native northwest plants.
Proposed rooftop plantings include a mix of sedum varieties. Sedums are very drought tolerantand some species are native. Proposed rain garden plantings include native plant species DwarfRedtwig Dogwood (Cornus s. Kelseyi) and Common Rush (Juncus effusus).
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Vashon IslandLibrary Expansion Vashon, WA
Mechanical, Plumbing, FireProtection, Electrical andLighting Systems
Description Report
100% Schematic Design
Prepared for:
Bohlin Cywinski Jackson1932 1
stAvenue Suite 916
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Systems Description for Mechanical,Plumbing, Fire Protection, Electrical andLighting Systems
Vashon Island Library ExpansionVashon, WA
TABLE OF CONTENTS
I. MEP UTILITIES........................................................................................3
II. HEATING, VENTILATING, AND AIR CONDITIONING............................4
III. PLUMBING/FIRE PROTECTION.............................................................8
IV. ELECTRICAL.........................................................................................10
V. FIRE ALARM SYSTEM ..........................................................................15
VI. LIGHTING SYSTEM ..............................................................................17
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Basis of Design of Mechanical, Plumbing,Fire Protection and Electrical Systems
Vashon Island Library ExpansionVashon, WA
I. MEP UTILITIES
A. NATURAL GAS
There is no existing natural gas service to the existing building and no newservice will be provided for the mechanical equipment and domestic hot waterequipment.
B. SANITARY SEWER
The existing sanitary sewer service to the building will remain unchanged.
C. ELECTRICAL
Existing PSE electrical service will remain unchanged.
D. DOMESTIC WATER AND FIRE PROTECTION
The existing domestic water service to the building will remain unchanged. A firesprinkler system will be added to the existing building which will require a newfire service line.
E. STORM WATER DRAINAGE SYSTEM
Internal roof and overflow drainage are not expected on this project.
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Basis of Design of Mechanical, Plumbing,Fire Protection and Electrical Systems
Vashon Island Library ExpansionVashon, WA
II. HEATING, VENTILATING, AND AIR CONDITIONING
A. DESIGN CRITERIA
1. Outdoor Design Conditions:
Summer: 78F dry bulb (Puget Sound ASHRAE 0.5%)
62F wet bulb (Puget Sound ASHRAE 0.5%).
Winter: 23F dry bulb (Puget Sound ASHRAE 0.2%)
B. CODES AND STANDARDS
The following codes and standards are applicable, in addition to any other localcode requirements.
2009 International Building Code with Washington State Amendments
2009 International Mechanical Code with Washington Amendments
2009 Uniform Plumbing Code with Washington State Amendments
2009 Washington State Energy Code
C. INDOOR DESIGN CONDITIONS
1. Heating Setpoint: 70 deg F
2. Cooling Setpoint: 78 deg F
3. Relative Humidity: No specific control.
4. Air Pressure Relationships:
a. Library, Meeting, and Work Areas: Generally ambient to positivecompared to outdoors. Design to be +0.05 SP compared toambient
b. Restrooms: Negative to adjacent spaces.
5. Internal Load Densities for Cooling Load Design
Type of SpaceLighting
Watts/ft2
ReceptacleLoad Watts/ft
2
Occupancyft
2/person
Library 1.3 .5 50
Meeting Room 1.0 0.5 20
Offices 1.0 1.5 140
Work Room 1.0 1.5 140
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Basis of Design of Mechanical, Plumbing,Fire Protection and Electrical Systems
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6. Noise Criteria - Provide equipment, air distribution systems and airdevices not to exceed the following NC (Noise Criteria) or RC (RoomCriteria) levels (this criteria will need to be confirmed with the projectacoustical consultant in the design development phase):
Space LibraryMeeting Rooms,Offices, and WorkRooms
Back ofHouse
Maximum NC orRC Level (Hertz)
NC / RC 30
(db)
NC / RC 35
(db)
NC / RC 40
(db)
31.5 -- / 55 -- / 60 -- / 65
63 57 / 50 60 / 55 64 / 60
125 47 / 45 53 / 50 57 / 55
250 41 / 40 46 / 45 51 / 50
500 35 / 35 40 / 40 45 / 45
1000 31 / 30 36 / 35 41 / 40
2000 29 / 25 34 / 30 39 / 35
4000 28 / 20 33 / 25 38 / 30
8000 27 / -- 32 / -- 37 / --
7. Building Envelope Assumptions for Cooling and Heating Design
The building envelope will meet the Washington State Energy Coderequirements either through the Prescriptive or Component Performance
path. Prescriptive requirements as follows for Climate Zone 1:a. Glazing: Low-e, insulated windows (0 to 40% glazing area)
(1) U-value: 0.40
(2) Solar Heat Gain Coefficient: 0.40
b. Exterior Facade:
(1) Walls: R-21
(2) Roofs: R-38
(3) Slab on Grade: R-10
8. Ventilation Design Basis:
a. Minimum Outside Air will be provided in accordance with the2009 International Mechanical Code.
b. Public Toilets: 2 cfm/ft2(exhaust)
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Basis of Design of Mechanical, Plumbing,Fire Protection and Electrical Systems
Vashon Island Library ExpansionVashon, WA
serve the remodeled library above. AHU-1 will serve the new meetingroom in the main library space. AHU-2 will serve the staff office andwork area at the south end of the building. AHU-3 will serve the westside perimeter of the library. AHU-4 will serve the east and northperimeter of the main library and AHU-5 will serve the interior of thelibrary space. Each air handler will have a mixed air plenum with outsideair and return air dampers to provide an economizer mode.
Five new condensing units will be provided that will have capacity to
match the new heating and cooling loads for the building due to the newarchitectural envelope and programming. The new condensing units willbe placed at the northern wall of the crawl space beneath the newmeeting room. Outside air will be provided by an architectural louver atthe face of the north wall of the crawl space. The crawlspace willaccommodate new supply and return air ductwork distribution. Thesupply air distribution will be provided at the floor to utilize the spaceavailable and to reduce duct conflict with lighting and architecture.Diffusers will all be flush with the finished floor.
Trane Split System Heat Pump
2. Mixed Mode:
The remodel to the library provides for an opportunity to utilize the use ofa mixed-mode system for the library with operable windows on the eastand west faade as well as a mechanical louver at the top of the monitorthat runs above the middle of the main library space. When the outdoorair temperature is mild, between 60-76 degrees F, the operable windowswill open as well as the monitor louver to produce a natural convectioneffect in the main library space. This will allow for the perimeter airhandlers AHU-3 and AHU-4 to be turned off to save energy
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Basis of Design of Mechanical, Plumbing,Fire Protection and Electrical Systems
Vashon Island Library ExpansionVashon, WA
4. Duct Construction Standards:
Air ducts will be constructed to the following standards:
a. Supply, return and exhaust ductwork will be constructed inaccordance with 1995 SMACNA construction, 1 inch pressureclass, seal Class A.
5. Acoustics:
As part of the design development, all of the mechanical systems willneed to be reviewed by the acoustical consultant to ensure the desirednoise and vibration levels throughout the building meet projectrequirements. Recommendations will be incorporated into theconstruction documents.
Critical items requiring acoustical evaluation include, but are not limitedto, the following areas or systems: condensing units in the crawlspace,air handling units in the crawlspace, and interior spaces.
6. Miscellaneous HVAC Items:The following items are provided upon construction completion by thecontractors:
a. Full maintenance brochures/manuals for all equipment and allcontrols, including Owners operating instructions.
b. Full as-built shop drawings, complete temperature controldrawings, complete equipment submittals and cut sheets.
c. Commissioning, testing and balancing of the mechanicalsystems.
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Basis of Design of Mechanical, Plumbing,Fire Protection and Electrical Systems
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III. PLUMBING/FIRE PROTECTION
A. CODES AND STANDARDS
This installation will comply with the following:
2009 Uniform Plumbing Code with Washington State Amendments
B. WATER SUPPLY
Water will be supplied to the relocated toilet rooms via the existing service. Thecurrent domestic water supply does not have backflow prevention so a newbackflow preventer will be installed in the new sprinkler room where the domesticwater piping will be re-routed.
C. DOMESTIC HOT AND COLD WATER
Inside the building and at the water service entrance, the piping will be type Lcopper tube with wrought copper fittings and soldered joints. The solder will belead-free, 95-5 type solder. Distribution piping will be either PEX pipe or copper(contractors option). Pro-press joints will be allowed on copper piping.
The existing domestic hot water heater and all associated piping and accessorieswill be removed. Domestic hot water for the restrooms and custodian sink will besupplied from an electric water heater located in the existing attic. The sink inthe meeting room will have a semi-instantaneous water heater located in the
cabinet below or adjacent to the sink.
D. SANITARY SEWER AND WASTE SYSTEM
An extension of the existing sanitary waste and vent system will be provided tothe new Toilet Rooms and to the new sink in the Meeting Room. These systemswill be designed in accordance with the Uniform Plumbing Code for gravity flow.Soil, waste and vent lines will be sized per UPC using good engineering practice.
Sanitary waste and vent piping above and below ground will be service weighthubless cast iron pipe. Couplings for below ground installation shall be cast-ironand above ground shall be heavy duty stainless steel couplings.
E. STORM DRAINAGE SYSTEM
A l t f d i d fl t i t t d
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Basis of Design of Mechanical, Plumbing,Fire Protection and Electrical Systems
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FIRE PROTECTION SYSTEMS
A. CODES AND STANDARDS
1. NFPA 13, Installation of Sprinkler Systems, 2007 Edition.
B. FIRE PROTECTION
1. The building will be protected by a hydraulically calculated sprinkler
system. The sprinkler system will be design build based on aperformance specification.
2. A 4-inch water service to the building will be extended from a nearbywater main.
3. Located in the sprinkler room, a double check valve assembly will beinstalled to protect the water system from contamination and a dry valveand air compressor for the dry sprinkler system.
4. There will be two subsystems installed in this building, a dry system forthe crawlspace and unheated spaces and a wet system for theremainder of the building. The wet system will be served by an alarmvalve and associated trim. The dry system will be served by a dry pipevalve, air compressor and associated trim. Both valves will containaddressable alarm and supervisory devices that will be monitored by thebuilding fire alarm system.
5. A low pressure fire department connection will be located outside thebuilding, connected to the system with check valves.
6. All sprinkler systems shall be hydraulically calculated. In the eventdesign criteria information from the project fire insurance underwriter isunavailable at the time of initial design, the following minimum criteriashall be used.
a. Light Hazard: Library floors shall be sized to deliver 0.10 gpm/sq.ft over an area of 1500 sq. ft. at the most
hydraulically remote location.
b. Ordinary Hazard: Group 1: Crawl space, tenant service area,piping shall be sized to deliver 0.15 gpm/sq. ft. over1500 sq. ft. at the most hydraulically remote location.
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Basis of Design of Mechanical Pl mbing Vashon Island Librar E pansion
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Basis of Design of Mechanical, Plumbing,Fire Protection and Electrical Systems
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a. 400A panel: mechanical loads
b. (2) 225A 2-section panel: receptacle loads
c. 225A 2 section panel: lighting loads
d. 60A SPD/TVSS
e. (2) 225A spare
f. (2) 100A spare
6. The new library roof will house PV (photovoltaic) arrays. Size and areato be determined. Provisions for PV system will be provided.
7. The remodel and expansion of the library will have an estimated demandload of 17 watts/sf.
8. All existing raceways and cabling will be demolished or replaced.
9. The existing power to the existing site lighting will be intercepted to willbe re-fed from the new electrical service.
10. The existing fire alarm system will be removed and replaced with neSilent Knight fire alarm system.
11. The interior and existing lighting will be controlled by the buildings BMSsystem via Watt Stopper lighting relay panel(s).
C. ELECTRICAL DESIGN CRITERIA
1. Disconnect switches: Heavy duty, horsepower rated, quick-make, quick-break, dead-front type. Self contained unit in a NEMA 1 enclosure(NEMA 3R where installed outdoors).
2. Panel-boards: Corrosion resistant galvanized (zinc finished) sheet steel.Fronts shall be cold rolled steel, finish coated with ANSI 61 gray enamelover a rust inhibitor. Bus bars shall be copper, full size neutral bus.Provide an equipment ground bus in each panel-board. Overcurrentprotection devices shall be molded case circuit breakers for branchpanel-boards and fused switches for distribution panels. Door-in-doorconstruction.
Basis of Design of Mechanical Plumbing Vashon Island Library Expansion
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Basis of Design of Mechanical, Plumbing,Fire Protection and Electrical Systems
Vashon Island Library ExpansionVashon, WA
a. HVAC equipment
b. Plumbing equipment
c. Fire protection equipment
d. Owner furnished equipment
e. Convenience and special purpose receptacles
f. Electric Door lock
g. Security System
h. Office Supplies: Laminators, printer, fax, battery charger, copymachine
5. Raceways:
a. All wire and cable shall be installed in the existing walker duct,conduit or raceway where applicable.
b. Provide empty conduit for A/V, security, and PA system.
c. Rigid Steel Conduit: Rigid conduit, heavy wall, hot dippedgalvanized inside and out, threaded ends, with threaded typefittings. Use where exposed to physical damage, indoors whereexposed to physical abuse and exposed outdoor installations.
d. Electrical Metallic Tubing: Continuous, seamless steel tubing,galvanized or sherardized on exterior, coated on interior withsmooth hard finish of lacquer, varnish or enamel, with steel, setscrew type fittings. Use for general-purpose feeders and branchcircuits.
e. Flexible Steel Conduit: Single strip, continuous, flexibleinterlocked double-wrapped steel, hot dip galvanized inside and
out forming smooth internal wiring channel, with steel,compression type fittings. Use in dry locations only, connectionsto lighting fixtures in suspended ceilings, connections toequipment installed above suspended ceilings, transformerconnections, bus duct plug in units, and connections toequipment where vibration isolation is required, maximum length
Basis of Design of Mechanical Plumbing Vashon Island Library Expansion
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Basis of Design of Mechanical, Plumbing,Fire Protection and Electrical Systems
Vashon Island Library ExpansionVashon, WA
g. Rigid Nonmetallic Conduit: Schedule 40 polyvinyl chloride withsolvent cemented type fittings. Use in underground duct banks,below slab on grade, or embedded in floor slabs.
h. MC (metal clad) Cable: To help facilitate cost cutting, MC cablemay be used, from homerun j-box to device, rather than conduitand wire for branch circuiting. Homeruns shall remain as pipeand wire for future expansion flexibility.
6. Wire and Cable:
a. Provide 600V minimum insulation rating. Electrical gradeannealed copper, tinned if rubber insulated THHN/THWNinsulation. Stranded ASTM Class B. Minimum size number 12 forbranch circuits; number 14 for control wiring. All #12 and #10
AWG conductors shall be solid.
7. Wiring Devices:
a. Switches and receptacles shall be specification grade. Allswitches shall be silent acting fully rated 20 amperes. Multiplepole, 3 way, 4 way, and special purpose type switches shall beprovided as required. Special purpose receptacles shall beprovided as required by the equipment characteristics. Devicecoverplates shall be stainless steel
b. Branch circuits shall utilize steel EMT where concealed aboveceilings or within partitions, with flexible steel conduit at final
equipment connections. Non-metallic rigid conduit (PVC)embedded in floor slabs will be provided where the structureallows. Mechanical equipment final connections shall be liquidtight flexible steel conduit.
c. General-purpose duplex receptacles will be provided for cleaningand maintenance purposes at a maximum spacing of 25 feet, inrestrooms (GFI type) and within 25 feet of all mechanicalequipment.
d. Data and power wiring shall be installed and terminated tofurnitures internal wiring bus.
e. Provide dedicated branch circuit (hot & neutral; HR ground maybe shared) for up to (4) duplex receptacles serving work station
ff ( &
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y pVashon, WA
V. FIRE ALARM SYSTEM
A. GENERAL
1. The existing fire alarm control panel (located in the electrical room) andannunciator (located in the lobby main entrance) are part of a NotifierModel SFP-1024 system that was installed in 1999. Due to the age of thefire alarm control panel, the entire system will be replaced with a new toensure continued available of replacement components. All existingdevices are to be replaced with new.
2. Area-wide smoke detection is not provided within the existing buildingand is not required by the IBC because the building is equipped with anapproved automatic sprinkler system throughout; renovation will belimited to the placement of a few spot type detectors.
3. Sprinkler water flow and valve tamper alarms will not requirereplacement in this project; connect to the new fire alarm system.
4. The two manual fire alarm pull stations shall be replaced and relocatedto accommodate the remodeling and at least two new units will berequired at the addition exits.
5. Both audible and visual notification appliances will require replacementand physical relocation in the entry, Caf/Waiting Area, and Quite Study(Rooms 108, 109, and 111). Other areas may also be affected.
6. New audible/visual notification appliances will be required in the first floornorth and east additions, as well as in the Mechanical Loft space abovethe lobby.
7. Optionally, the Owner may direct that area-wide smoke detection beprovided as a form of early warning detection, as recommended by theproperty insurance carrier. If this level of additional detection is provided,beam type or aspirating smoke detection may be utilized in areas havinghigh ceilings and large volumes, such as a portion of the main entry
lobby (Room 108) Collections (Room 114) and Childrens collection(Room 112), to facilitate ease of testing and maintenance. Spot typesmoke detection shall be utilized for all other areas.
8. New area smoke detectors shall be provided in each new mechanical,electrical, and telephone equipment room.
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11. Acceptable Manufacturers: Honeywell Silent Knight. No substitutionsallowed.
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VI. LIGHTING SYSTEM
A. LIGHTING SYSTEM DESCRIPTION
1. All existing lighting will be removed and replaced.
2. Site Lighting - All Parking area light fixtures will remain. Low levelpathway lighting will be provided at the new pathway along the east ofthe building.
3. Interior Lighting Lighting will be designed to highlight the architectureand task areas while providing a highly energy efficient lighting system.Dimming ballasts will be used to maximize flexibility in light levels.
Workroom and Staff Areas Direct/Indirect lighting will be used toprovide ambient light levels and a low glare environment. Tasklights willprovide higher levels of light and will be equipped with occupancysensors to ensure automatic energy savings when workstations are notin use.
Collection Areas Indirect lighting will be used to provide ambient levelsof light. Large direct/indirect pendants will hang over Non-fiction andComputer area bringing emphasis to the existing structure and vaultedspace. Stack lighting will be provided by the owner at all library stacks.
Circulation Decorative Pendants will provide ambient light levels.Linear wall wash will highlight the wall behind circulation desks.
Study Rooms Wall mounted direct/ indirect fixtures will provide ambientand task lighting. Local dimmer switches will be provided for patronspersonal control of light levels.
Meeting Room A combination of indirect and direct fixtures will provideflexibility and multiple levels of light. Local dimmer switches will beprovided for control of light levels for presentations and to set mood forcommunity gatherings.
Childrens Area Recessed fixtures integrated with special ceilingsystem will provide high light levels as well as a sense of play andwhimsy.
4. Emergency egress lighting will be provided via battery back-up toachieve 0.1 fc min, 1 fc avg., 40:1 uniformity along path of egress.
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accommodate new lighting loads and to tie-into the existing lightingcontrol system. Local dimmer switches will be used in the Meeting Roomand Study Rooms.
8. Occupancy sensors (dual technology) will be provided for switch controlof individual offices, meeting rooms, restrooms, storage, mechanical &electrical.
B. LIGHTING SYSTEM GOALS MATRIX
1. The lighting systems are being designed in accordance with therecommendations of the Illuminating Engineering Society andWashington State Energy Code. The Lighting system will be designed tomeet the following goals and guidelines for each program area:
Area TargetIlluminance
Design Intent Lamp W/sf
Pathway General 1 fc Low level pathlighting will help
identify new pathway along eastside of the building.
CFL
LED
.15
Porch/Vestibule
General 5 fc Light fixtures integrated intobuilding overhangs and canopiesto light the ground andarchitectural features
FLMH
.5
Circulation/Self
Check-out
General 10 fcHighlight 30 fc
Pendant mount fixtures willprovide ambient lighting. Wall
wash fixtures with highlight wallbehind circulation desk.
CFLFL
1.3
Collection/Readingroom
General 20 fcStacklighting 50 fc
Indirect lighting will provideambient light levels. Pendantmount fixtures will provide featureelements and show off the heightof the space.
CFLFL
1.3
ChildrensCollection
General 20 fcTask 30 fc
Light fixtures integrated intoceiling system will be used to
create whimsy, provide high lightlevels and bring the scale of thespace down to childrens height.
CFLFL
1.3
Cyberbar/Computerarea
General 10 fc Light levels will be reduced atcyberbar and computer areas toensure proper viewing of
FL .8
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Area TargetIlluminance
Design Intent Lamp W/sf
Offices General 30 fcTask 50 fc
Pendant mount indirect lightfixtures will provide ambient lightlevels. Tasklights will be mountedat desks.
CFLFLLEDtask
1
StaffWorkroom
General 30 fc Direct/ Indirect pendant mountedfixtures will provide ambient lightlevels. Tasklights will be mountedat desks
FLLEDtask
1
Restrooms General 10 fcVanity 20fc
Even bright light levels will beprovided. Vanities will be lightedto a higher light level.
FL .8
Mechanical/Electricalrooms
General 30 fc Strip fluorescent light fixtures willbe evenly spaced aroundmechanical and electricalequipment
FL 1
Notes: Light levels shown in footcandles at work plane height. CFL indicated compact
fluorescent light sources, FL indicated linear fluorescent light sources, MH indicatedmetal halide sources, LED indicated LED light sources.
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SD ACOUSTICAL NARRATIVEVASHON LIBRARY
BCJ, PROJECT ARCHITECTS
November 8, 2010
INTRODUCTIONThe following document contains acoustical guidelines for the design of the Addition andRemodel of the Vashon Library. These recommendations are based on information from arecent meeting and on schematic documents.
RECOMMENDATIONS
ARCHITECTURALACOUSTICS
Architectural acoustics is generally the control of sound between spaces, and the creation ofthe desired acoustical characteristics within the various rooms. Within the Vashon Library,there are several spaces that will rely on the interior acoustic environment for noise control,and several adjacencies that will require special attention to provide proper acousticalseparation.
Surface Finishes
The ceiling surface is the most globally effective plane on which to locate absorptivesurfaces. Ceiling finishes in the Reading areas, Study rooms, Break rooms, Teens, andChildren should be absorptive, minimum NRC 0.65. Any number of finishes is available tomeet this specification.
Reading/Teens/Children
If wood slats is the desired aesthetic, the panels must be backed be backed with fiberglassabsorptive material. Black faced duct liner may be used as a backing material (1 duct liner,NRC 0.65).
Suggested products:Wood Grill Ceiling:
WoodCeilings. We recommend open area to be about 50% and depth of the slatsshould be equal or less than space between slats.
Louver Wood Ceiling by Conwed
Pinta Bioline
If recycled wood is used, the slats should be narrow. A slat of 1 with separationbetween is preferred. The wider the slat the more high frequency absorption that is lost.
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Meeting
The ceiling in the Meeting room should be left hard from the front row of seating to theprojection wall. The rest of the ceiling should be absorptive.
Absorptive wall panels are desirable on the rear wall between 3-0 from the floor and doorheight. These panels should be a minimum of 1 thick with a minimum NRC 0.80. The wideexpanse of glass on all of the walls is challenging. Providing some treatment on the smallsection of rear wall is essential.
Either prefabricated panels or a stretch wall system would be suitable on the wall surface,such as Wall Technology or Snap Tex. Panels should be 1 thick and have an NRC of0.80.
Sound Isolation
Audibility of intruding sound is dependent upon the amount of acoustic isolation provided bythe construction separating the two adjacent spaces and by the amount of backgroundsound in the receiving space. Individuals in rooms with higher background sound levels,typically produced by the HVAC system, are less able to hear intruding sounds. Conversely,those in rooms that are quieter can hear intruding sounds more easily. Determination ofappropriate wall types requires assumptions regarding expected sound levels in sourcerooms and background HVAC levels in receiving rooms. We used the following noisecriteria for the HVAC system as a design basis for wall type evaluation.
Space NC dBA
Toilet Rooms/Copy room 45 50Workroom 40 45General Library spaces 40 45Offices, Study rooms, Break rooms 35 40Meeting Room 30-35 40-45
The following table presents the suggested wall types for separation between various
adjacencies.
Source Receiver SourceSound
Description of Assembly *
Workroom Circulation Book sorting Type 3: 2 layers 5/8 GWB on each side
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Source Receiver SourceSound
Description of Assembly *
Teens Study room Raisedspeech
Type 2: 2 layers 5/8 GWB one sideand 5/8 GWB other side of 25 gauge 3-5/8 metal studs, R-11 in cavity**.
MeetingRoom
Library Lectures/Amplified
program
The sliding glass doors will need specialattention to provide adequate sound
isolation.Notes:
* These partitions should extend to the structure (at least one layer of GWB on each studside), preferably. Special ceiling treatment will be required if this is not possible.
** Solid core wood or filled core steel door with the following seals.
The frame to be grouted solid, or packed solid with safing insulation and
sealed airtight with acoustical sealant. The doorframe to be grouted solid byinstaller.
Provide the following door seals:
Head: Pemko 350CN, or equal
Jambs: Pemko 350CN, or equal
Bottom: Pemko 314AN, or equal
Threshold: Pemko 2005 with S2 silicon seal.Note that the doors should be sealed against hard floor (vinyl tile, linoleum,wood floor, etc.). Do not install the threshold over carpet.
Meeting
The mechanical system will be located in the crawl space under the Meeting room.Additional construction may be required at the Meeting room floor to sufficiently mitigate thesound of the mechanical equipment. Floor registers in the Meeting room may needadditional to be connected with heavier gage ductwork or the ducts may need to be boxed in
to prevent break-in noise from the equipment.
Teens and Childrens
Both of these areas have the potential of being higher noise level zones with teensth i f ft h l i li ti d hild th i f t t lli t
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The Childrens area is currently shown with bookcases defining the area. Where bookcasesare back to back, inserting a solid backing is useful for reducing sound transfer. The glasswall along the back limits the areas for absorption. Overstuffed or soft furniture in this areais desirable.
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PROJECT: VASHON LIBRARY ADDITION/MOD - BUILDING
LOCATION: VASHON ISLAND, WA
BLDG SF: 10,110
ESTIMATE: 2010176
EST TYPE: SCHEMATIC DESIGN
DIVISION DESCRIPTION TOTAL $/SF
A1010 STANDARD FOUNDATIONS 92,427 9.14
A1030 SLAB ON GRADE 13,762 1.36B1010 FLOOR CONSTRUCTION 66,440 6.57
B1020 ROOF CONSTRUCTION 150,549 14.89
B2010 EXTERIOR WALLS 73,924 7.31
B2020 EXTERIOR WINDOWS 192,848 19.07
B2030 EXTERIOR DOORS 20,300 2.01
B3010 ROOF COVERINGS 229,282 22.68
C1010 PARTITIONS 69,433 6.87
C1020 INTERIOR DOORS 19,400 1.92
C1030 FITTINGS 23,759 2.35
C3010 WALL FINISHES 54,890 5.43
C3020 FLOOR FINISHES 48,919 4.84
C3030 CEILING FINISHES 36,488 3.61
D2090 OTHER PLUMBING SYSTEMS 68,160 3.74
D3090 OTHER HVAC SYSTEMS & EQUIPMENT 249,975 24.73
D4090 OTHER FIRE PROTECTION SYSTEMS 44,074 4.36
D5010 ELECTRICAL SERVICE & DISTRIBUTION 117,768 11.65
D5020 LIGHTING & BRANCH WIRING 141,797 14.03D5030 COMMUNICATIONS & SECURITY SYSTEMS 84,075 8.32
E1090 OTHER EQUIPMENT 7,000 0.69
E2010 FIXED FURNISHINGS 70,958 7.02
F2010 BUILDING ELEMENTS DEMOLITION 66,315 6.56
Z1010 ADMINISTRATION 315,000 31.16
ESTIMATE SUBTOTAL 2,257,541 223.30
DESIGN CONTINGENCY @ 7.50% 169,316
SUBTOTAL 2,426,857
GENERAL CONTRACTOR'S OH & P @ 6.50% 157,746SUBTOTAL 2,584,602
ESCALATION TO 15-MAR-12 (3.00%/YR) @ 3.99% 103,242
TOTAL 2,687,844 265.86
EXCLUSIONS
PROJECT: VASHON LIBRARY ADDITION/MOD - BUILDING
LOCATION: VASHON ISLAND, WA
BLDG SF: 10,110
ESTIMATE: 2010176
EST TYPE: SCHEMATIC DESIGN
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ITEM DESCRIPTION QUANTITY UNIT UNIT COST T OTAL $/SF
A1010 STANDARD FOUNDATIONS
02315 BACKFILL FOUNDATIONS 181 CY 8.00 1,448
02315 EXCAVATE FOUNDATIONS 223 CY 6.00 1,338
02315 HAUL EXCESS EXCAVATION 42 CY 12.00 504
02330 OVEREX. PLACE STRUCT. FILL,HAUL OVREX. 219 CY 40.00 8,760
02630 FOOTING DRAINS 254 LF 9.00 2,286
03000 COLUMN/PAD FTGS. 24 EA 130 3,120
03000 CONTINUOUS FTGS. 9 CY 360 3,24003100 10" FOUND. WALL POUR AGAINST EXTG. 252 SF 50.00 12,600
EPOXY DOWEL TO EXTG
03100 10" FOUNDATION WALLS 1,827 SF 28.50 52,070
03100 ACOUSTICAL WALL-MECH ROOM 256 SF 14.00 3,584
ALLOW
07130 WATERPROOF,INSUL,DRAINBOARD-FND & WALLS 1,159 SF 3.00 3,477
A1010 STANDARD FOUNDATIONS DIVISION TOTAL 92,427 9.14
A1030 SLAB ON GRADE
02315 GRAVEL AT SLABS 2,980 SF 0.55 1,639
03000 4" RAT SLAB 2,980 SF 3.50 10,430
03000 4" SLAB ON GRADE VESTBULE 130 SF 5.00 650
07260 VAPOR RETARDER AT SLABS 2,980 SF 0.35 1,043
A1030 SLAB ON GRADE DIVISION TOTAL 13,762 1.36
B1010 FLOOR CONSTRUCTION
06100 WOOD FLOOR STRUC,PLY,POSTS,BEAM,JOISTS,INSUL 3,380 SF 11.50 38,870
06110 MISC. PATCH EXTG. FLOOR STRUCT.-ALLOW 6,200 SFA 2.50 15,500
07150 FLASH EDGE,CLAD FLOOR OVERHANG SOFFIT 128 SF 15.00 1,920
AT CHILDRENS
07200 REPLACE INSULATION @ EXTG. FLOOR 6,200 SFA 1.25 7,750
09830 ACOUSTICAL FLOOR TREAT @ MECH ROOM FLOOR 400 SF 6.00 2,400
ALLOW
B1010 FLOOR CONSTRUCTION DIVISION TOTAL 66,440 6.57
B1020 ROOF CONSTRUCTION
05000 1/4" CONTINUOUS BENT PLATE 3,122 LF 12.00 37,464
ITEM DESCRIPTION QUANTITY UNIT UNIT COST T OTAL $/SF
06100 ROOF PLYWOOD 1-1/8" 5,690 SF 2.00 11,380
06180 MISC. BLOCKING,RIMS,FRAMING 5,690 SFA 0.55 3,130
B1020 ROOF CONSTRUCTION DIVISION TOTAL 150,549 14.89
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B2010 EXTERIOR WALLS
06100 PLYWOOD SHEAR WALL,2 LAYERS,STUDS 16" 416 SF 6.00 2,496
06100 WOOD PATCH @ EAVES FOR LIGHTS REMOVED 1 LS 2,500 2,500
ALLOW
07200 REPLACE INSULATION @ REMAINING EXT. WALLS 2,814 SF 0.85 2,392
07300 EXT WALL SYSTEM W/TRESPA 793 SF 49.00 38,857
INCL.INT VESTIBULE
07410 FRAME INFILL,CLAD NEW MONITORS 252 SF 28.00 7,056
07410 METAL CLAD INFILLS 112 SF 28.00 3,136
09250 INT.GWB AT EXTG. EXT. WALLS 2,814 SF 1.95 5,487
09900 EXTERIOR PAINTING/SEALING 1 LS 12,000 12,000
B2010 EXTERIOR WALLS DIVISION TOTAL 73,924 7.31
B2020 EXTERIOR WINDOWS
08250 REPLACEMENT WINDOWS @ EAST EXTG CLERESTORY 252 SF 50.00 12,600
08510 STEEL AND GLASS OVER EXTG.OPGS 72 SF 50.00 3,600
08520 ALUMINUM WINDOW WALL @ CHILDRENS 321 SF 50.00 16,05008520 CUSTOM WINDOW WALL @ GLULAMS 1,872 SF 51.00 95,472
INCL.INT VESTIBULE
08520 GLAZING @ MONITORS 114 SF 47.00 5,358
08520 REPLACEMENT WINDOWS 196 SF 50.00 9,800
08520 STRUCTURAL GLAZED WINDOW @ MTG. 396 SF 60.00 23,760
10705 EXTERIOR ELECTRIC VENETIAN SUNSHADES 728 SF 36.00 26,208
B2020 EXTERIOR WINDOWS DIVISION TOTAL 192,848 19.82
B2030 EXTERIOR DOORS
08100 EXT. HM DRS/FRMES/HRDWRE 5 EA 1,600 8,000
08400 GLAZED ENTRY DOORS-PER LEAF 4 EA 1,800 7,200
INCL.INT VESTIBULE
08400 NEW DOOR & SIDELITE @ MODIFIED OPG. 1 EA 2,600 2,600
08740 MISC.HARDWARE/ADA/ELECTRIC 1 LS 2,500 2,500
B2030 EXTERIOR DOORS DIVISION TOTAL 20,300 2.01
B3010 ROOF COVERINGS
07220 FOAM IN PLACE INSUL, CLOSED CELL R38 614 SF 4.75 2,917
AT NEW
07220 FOAMINPLACEINSUL,CLOSEDCELLR38 3,639 SF 4.75 17,285
ITEM DESCRIPTION QUANTITY UNIT UNIT COST T OTAL $/SF
09100 FURRING 10,373 SF 2.00 20,746
09250 GWB UNDERSIDE FOAM INSUL