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May 13, 2015 TG16.0 IFB - Bidder Q&A Response Set #6 of 2

TG16.0 – Interiors/Finishes

Questions are numbered in the order received. Numbers missing in the sequence have been answered in a previous response set.

Question No.

Submission Date

Drawing No.

Document/ Spec. No. Question Response

TG16.0-074

4.14.2015 1/A1-7897 1/A1-7897 of the scoping documents calls out the retractable tubular railing to be in the TG16.0 Scope of Work. Please confirm that this is

mislabeled and the railing is excluded from the TG16.0 scope.

The retractable tubular railing will be removed from the scope of work for TG16.0 Interiors/Finishes in the next addendum; this scope is included in the work of TG07.5R Metal

Stairs and Ladders.

The annotation "retractable tubular railing" on 1/A1-7897 will be revised to read "Ladder Safety Post" per Specification Section 05 51 33 paragraph 2.5.

TG16.0-089

4.16.2015 A-0022 Please confirm the CMU wall types 1 and 31 as shown on B/A1-6251 are

part of the TG16.0 scope of work. The Masonry Partition Schedule on

A-0022 shows Type 1 as not used and Type 31 is not detailed.

Refer to attached sketches SKA-4635, SKA-4636, and SKA-4637 for revised wall tags and curbs.

There are no new CMU wall types.

TG16.0-

098

5.1.2015 Bidding

Checklist Item #3

Please clarify and confirm: The

general contractor will not need to submit a “certified, audited financial statement verifying Qualification information” with the bid, due to the fact these were previously submitted with the RFQ package.

Submission of audited financial information will be

required at the time of bid to verify current financial status.

TG16.0-

009

3.13.2015 Exhibit A IV -

3. Base Bid Item

Specialties Scope Item 13, F & I bus

deck level benches. Please furnish specifications and detail.

Refer to Specification Section 10 99 00 paragraph

2.2.F for Bus Deck and Plaza seating specifications.

TG16.0-014

3.13.2015 2/A1-8615 What finish is required for W-18 Aluminum Closure panels. Please furnish specification for this item.

Please refer to the attached markup of Specification Section 09 24 00 for an update of metal panel closures.

May 13, 2015 TG16.0 IFB - Bidder Q&A Response Set #6 of 2

Question

No.

Submission

Date

Drawing

No.

Document/

Spec. No. Question Response

TG16.0-020

3.18.2015 Exhibit F A list of Trade Specific BIM Requirements is included at the back of Exhibit F – BIM Requirements for Subcontractors indicating the level of As-Built DOD. Please confirm As-Built BIM modeling is the only

requirement for the Finishes Trade Package scope. If required to be a part of the BIM coordination

meetings, please provide specific quantity of meetings required for each specific trade.

BIM coordination is required for the work of TG16.0 Interiors/Finishes. BIM coordination will be required until the work has been coordinated, as per the Contract Documents; no specific number of meetings can be provided. Refer to Exhibit F for general scheduling requirements.

TG16.0-022

3.18.2015 00 05 20 Please confirm if any liquidated damages apply to the Interior/Finishes Bid Package TG16.0. Specification 00 05 20 – Agreement indicates liquidated damages ranging from $5-$50K for

the entire Project, not specifically for

the bid packages.

Refer to the response to TG16.0-011 in Q&A response set #2.

TG16.0-024

3.18.2015 Exhibit M The 2,200+ page long RFI Log provided in Exhibit M seems to include the questions only without the responses (questions are

duplicated in the answer column). Please clarify. In addition, please indicate what the abbreviations in the “Choice Required” column signify.

Exhibit M was corrected in Addendum 1 issued on March 17, 2015, and is available on the contract page of the TJPA website: http://www.transbaycenter.org/rfp/interiorsfinishes

The "Choice Required" column is not utilized and will be removed in the next update of Exhibit M.

TG16.0-031

3.23.2015 Exhibit I Exhibit I includes a schedule indicating a 1,030 cal day duration for TG16.0 beginning last March 2014 and ending in May 2018. This calculates out to over 1,500 cal days. Please indicate approximate start date and confirm completion

date of May 7, 2018 for the TG16.0 Interiors/Finishes Project.

Per Exhibit I, a Notice to Proceed for TG16.0 Interiors/Finishes will be issued in June 2015, field construction activities will conclude in August 2017, and final completion will be in May 2018.

Transbay Transit Center PORTLAND CEMENT PLASTERING (W-18) 2 . . . 2 Revised & Reissued for Construction 09 24 00 - 1 FEBRUARY 27, 2015

SECTION 09 24 00 – PORTLAND CEMENT PLASTERING (W-18)

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes: Provide plaster wall assemblies including but not limited to the following:

1. Structural Steel Stud Framing System and Non-Structural Metal Framing System as required by calculations.

2. Exterior sheathing. 3. Air/water barrier 4. Metal lath and accessories. 5. Portland Cement Plaster and finishes. 6. Finishes: Acrylic based. 7. 3D Model capabilities. 8. Product Options:

a. General Options: The plastering portion of this project will be treated as Design/Build: The Architectural drawings that cover the portion of work for this section show design intent and profiles that are diagrammatic in nature. The Architectural drawings also show the general building standards for tying into the adjacent building trades, which are to be completed and coordinated by this section. Modifications to the intended aesthetic effect will be permitted if the revisions do not impact the general aesthetic effect. Contractor shall provide a narrative of allowable deviations from Basis of Design.

b. Proprietary Designs: The Contractor is encouraged to provide the Contractor's own proprietary plastering systems (assemblies) which may differ from the assemblies specified in this section, provided the proprietary system proposed by the Contractor satisfies the given performance criteria and the proprietary system design is generally similar to the system described in the construction documents.

B. The work of this Section is Design/Build which is a process where the contractor awarded this portion of the work is responsible for the requirements specified below. The Contractor awarded this portion of the work shall engineer, fabricate and install the work of this Section in accordance with the design intent, design criteria, performance requirements, applicable codes and ordinances at the time of award, and requirements of the AHJ. Structural and operational design requires the certification of a California-registered structural engineer who shall also become the engineer of record for this portion of the work.

1. See Section 05 41 00 Structural Metal Stud Framing System 2. In addition, the Contractor shall be responsible for preparation and submittal of Samples,

shop Drawings, Product Data, calculations, tests reports, and other required submittals for review by the Design Team and the AHJ.

3. Fabrication and installation of Work without the acceptance of shop drawings by the TJPA Representative and AHJ is not allowed and will be at the Contractor’s risk and costs.

4. Mockup construction is also a requirement of this Section and its costs shall be included in the Contractor’s Bid

C. Work Installed in this Section but Furnished in other Sections:

1. Division 7 for seismic joint covers. 2. 1 DELETED 1

D. Refer to Section 01 81 13 General LEED Building Design & Construction Requirements’ for additional LEED requirements.

9. Aluminum panel closures.

RESPONSE TO RFI TG16.0-014 150320


E. Refer to Section 01 80 50 for the seismic bracing/anchorage requirements

1.2 ABBREVIATIONS AND ACRONYMS:

A. AHJ: Authorities Having Jurisdiction.

B. BAAQMD: South Coast Air Quality Management District.

C. AISC: American Institute of Steel Construction.

D. AISI: American Iron and Steel Institute.

E. ANSI: American National Standards Institute.

F. AWS: American Welding Society.

G. BAAQMD: Bay Area Air Quality Management District.

H. LEED: Leadership in Energy and Environmental Design.

I. MSDS: Material Safety Data Sheets.

J. SCAQMD: South Coast Air Quality Management District.

K. SSMA: Steel Stud Manufacturers Association.

L. SSPC: Society for Protective Coatings (formerly known as Steel Structures Painting Council).

M. UL: Underwriters Laboratories Incorporated.

N. VOC: Volatile Organic Compound.

1.3 REFERENCES

A. ACI 306R-10 - Guide to Cold Weather Concreting

B. ASTM A641/A641M-09a - Standard Specification for Zinc-Coated (Galvanized) Carbon Steel Wire

C. ASTM A653/A653M-11 - Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process

D. ASTM C150/C150M-12 - Standard Specification for Portland Cement

E. ASTM C207-06(11) - Standard Specification for Hydrated Lime for Masonry Purposes

F. ASTM C645-11a - Standard Specification for Nonstructural Steel Framing Members

G. ASTM C665-12 - Standard Specification for Mineral-Fiber Blanket Thermal Insulation for Light Frame Construction and Manufactured Housing

H. ASTM C754-11- Standard Specification for Installation of Steel Framing Members to Receive Screw-Attached Gypsum Panel Products.

I. ASTM C847-12- Standard Specification for Metal Lath

J. ASTM C897-05(09) - Standard Specification for Aggregate for Job-Mixed Portland Cement-Based Plasters


K. ASTM C926-12a -Standard Specification for Application of Portland Cement-Based Plaster

L. ASTM C932-06 - Standard Specification for Surface-Applied Bonding Compounds for Exterior Plastering

M. ASTM C954-11 - Standard Specification for Steel Drill Screws for the Application of Gypsum Panel Products or Metal Plaster Bases to Steel Studs from 0.033 in. (0.84 mm) to 0.112 in. (2.84 mm) in Thickness

N. ASTM C1063-12 - Standard Specification for Installation of Lathing and Furring to Receive Interior and Exterior Portland Cement-Based Plaster

O. ASTM C1177/C1177M-08 - Specification for Glass Mat Gypsum Substrate for Use as Sheathing

P. ASTM D226/D226M-09 - Standard Specification for Asphalt-Saturated Organic Felt Used in Roofing and Waterproofing

Q. ASTM D3273-00(05) - Test Method for Resistance to Growth of Mold on the Surface of Interior Coatings in an Environmental Chamber

R. ASTM E84-08a - Test Method for Surface Burning Characteristics of Building Materials

S. ASTM E119-12a - Standard Test Methods for Fire Tests of Building Construction and Materials

T. ASTM E136-04 - Test Method for Behavior of Materials in a Vertical Tube Furnace at 750°C

U. ASTM E488/E488M-10 - Standard Test Methods for Strength of Anchors in Concrete Elements

1.4 ADMINISTRATIVE REQUIREMENTS

A. Preconstruction Meeting: Comply with Article 1.3 of Section 01 12 00.

B. Preinstallation Meetings: Comply with Section 01 12 00 and Section 01 14 00, except as specified below. Where the provisions are in conflict, the more restrictive requirements apply.

1. As part of the Preparatory Phase to comply with Section 01 14 00, the contractor shall at the appropriate time coordinate with the trade schedule, organize a final review of documentation and schedule a prefabrication meeting.

C. Coordination drawings: Prepare coordination drawings where work of other Sections is integrated in the work of this Section for efficient installation of different components, and when coordination is required for installation of products and materials fabricated by separate entities in the work of this Section.

1. Indicate relationship of components shown on separate Shop drawings. 2. Indicate required installation sequences. 3. Refer to Divisions 22, 23 and 26 for specific coordination drawing requirements for

mechanical and electrical installations.

D. Coordination:

1. Notify other trades of items required to be incorporated into work of separate Sections. 2. Certain components specified in this Section include items closely integrated with doors,


3. Flashings, and architectural metalwork specified in other Sections require close coordination with such allied trades. Be responsible for coordination with these other trades to en-sure correct installation procedures and results.

4. Coordinate and cooperate with subcontractors of adjacent systems by installing closures and trim supplied by work of other Sections and installed in the work of this Section.

5. Verify locations of embeds and existing adjacent structural supports by field measurements before fabrication and indicate measurements on Shop Drawings. Prior to start of Shop Drawings preparation, coordinate tolerances of other trades that may affect the work of this Section.

1.5 SUBMITTALS

A. Comply with the General Conditions and Section 01 13 00, except as specified below. Where the provisions are in conflict, the more restrictive requirements apply. Do not submit items not requested.

B. Submit statement of all design assumptions (including applied loading, material properties, static increase factors, dynamic increase (strain-rate enhancement) factors, dynamic load factors, mass assumption, damping assumptions etc.).

C. List of Suppliers:

1. Prior to submitting shop drawings or samples, submit a complete listing of products, manufacturers and fabricators for the work of this Section. TJPA Representative’s review of listed firms will not be completed until review of subsequent submittals.

2. Complete the submittals of manufacturer’s data and samples required by other Sections of these Specifications, prior to submittal of shop drawings.

D. Product Data:

1. Submit manufacturer’s literature and specifications describing the general properties of each material and accessory to be used in the Work including primary function, quality, performance, location and details of construction relative to materials, dimensions of individual components, profiles, and finishes. Include a statement that each product to be provided is recommended for the application shown.

2. Product information on sealants to be used, complete with recommendations and installation instructions.

3. Shop Drawings: As soon as possible after award of Contract, submit shop drawings that include full size details with actual dimensions and thickness of components, engineering calculations, 3D computer model showing attachments, geometry, etc. Indicate where and how the proposed design deviates from the Contract Documents. When the survey of the primary structural steel supports is available, adjust dimensions on shop drawings accordingly before submitting them to the TJPA Representative. Show and identify the following.

a. Prepare details at not less than half full size. b. Show the metal joint layout on each plane, support framing system, panel attachment

members, dimensions, sizes and locations of cutouts, relation to work of other trades, and other pertinent data and information.

c. Include large scale details that cannot be shown in elevations or sections. Include 3dimensional or axonometric drawings to illustrate conditions difficult to show in 2 dimensions.

d. Include typical and atypical details for every member, joint, anchorage system. e. Show details of support system, method of attachment to building structure,

anchorage details and interface with adjacent work. f. Show component locations and intersection details.


g. Detail fastening and sealing methods and product joinery to ensure proper performance of field installation. Provide interfacing details with adjacent work clearly indicating continuity of air barrier and insulation, etc., when applicable.

h. Show line of airseal, water drainage, venting and water shed clearly defined, including continuity of air seal and membrane flashing with adjacent trades.

i. Show method of isolating dissimilar materials. j. Show provisions for thermal movements. k. Show dimensioned adjustment provisions in anchors (fixings) that will be used to

attach assemblies to primary structural system. l. Provisions for adjustment of anchors relative to tolerances of building structure:

Provide maximum structure deviation which the anchor can accommodate (level, up, down, in and out) at edge of slab, columns and corners.

m. Show method of accommodating wind induced, seismic, thermal, and live load differential vertical and horizontal movement.

n. Show section moduli of wind loading components and calculations of stresses and deflections. Provide material properties and other information needed for structural analyses.

o. For mockup: Provide a full scale mock-up 20 feet long by full height demonstrating a corner condition, two end conditions and adjacent panel conditions. Submit shop drawings in same format and content as Project shop drawing.

p. Final comment on shop drawings will be contingent upon complete submission of structural calculations, documentation, certifications, approval of anchors, firestop assemblies, Samples, mockups, and test reports.

q. Provide copies of final reviewed shop drawings to the AHJ and obtain their approval thereof.

4. Schedule of proposed control joints and metal trim items keyed to minimum 1/8-inch scale building elevations.

E. Samples:

1. Submit the following samples:

a. Where finish involves normal color and texture variations, include 12” square samples showing the full range of colors, textures, and patterns available for each type of finishes indicated. Sample sets composed of 2 or more units showing the full range of variations expected.

b. Include similar Samples of material for joints and accessories involving color selection.

c. Samples for verification in units at least 24 inches square of each type of finish indicated, sets or each color, texture, and pattern specified, showing the full range of variations expected in these characteristics.

d. Material Certificates: Submit certificate signed by manufacturer for each kind of plaster aggregate certifying that materials comply with requirements.

e. Samples of all metal accessories

F. Design Calculations: Submit the following:

1. Sealed and signed calculations prepared by the Design Engineer, providing design assumptions regarding loadings in compliance with the CBC, applicable Standards, and authorities having jurisdiction.

2. Calculations verifying conformity with specified loading requirements. 3. Design calculations and tabular data for design of members, including methods of

attachment to supporting structure with design loads and maximum support reactions. Pre-pare calculations in a clear and comprehensive manner so they can be easily reviewed and cross referenced to applicable shop drawing detail.


4. Type and location of fixing with regard to loads applied to building structure. Include deflection summary for anticipated primary structural deflections, as shown on Structural Drawings.

G. Contractor’s Quality Control (QC) Submittals: Refer to Section 01 14 00.

H. Special Warranties: Warranty form from the manufacturer.

1.6 LEED SUBMITTALS

A. LEED Credit MR 4 Recycled Content: LEED documentation relative to recycled content credit in accordance with LEED Reference Guide and Section 01 35 36 LEED REQUIREMENTS. Include in LEED Documentation Notebook.

B. Credit MR 5: Product data indicating location of source material acquisition and location of manufacture/fabrication. Include a statement indicating projected costs for each product being sourced, processed, and manufactured/fabricated within a straight-line 500 mile (800 kilometer) total travel distance of the project site using a weighted average determined through the following formula: (Distance by rail/3) + (Distance by inland waterway/2) + (Distance by sea/15) + (Distance by all other means) = 500 miles [800 kilometers]..

C. Credit MR 4.1 and 4.2, Recycled Content: Product Data indicating percentage by weight of post-consumer and post-industrial recycled content for products having recycled content included in this Section. Include a statement indicating costs for each product having recycled content.

D. Credit MR 5.1 and 5.2, Local/Regional Materials: Product data indicating location of material manufacturer for regionally manufactured materials.

1. MR 5.1: Include LEED Product Information Form indicating cost and distance from manufacturer to Project Site for each regionally manufactured material included in this Section.

2. MR 5.2: Include LEED Product Information Form indicating cost and distance from point of extraction, harvest, or recovery to Project Site for each raw material used in regionally manufactured materials included in this Section.

E. Credit IEQ 4.1: If field applied, provide manufacturer’s MSDS or technical data sheet showing a printed statement of VOC content for all adhesives and sealants used on the project and demonstrating compliance with SCAQMD Rule #1168, effective July 1, 2005 and amended January 7, 2005. Provide manufacturer’s product data for aerosol adhesives, including printed statement of VOC content that demonstrates compliance with the limits defined in Green Seal standard GS-36, in effect October 19, 2000.

1.7 QUALITY CONTROL

A. Regulatory Requirements: In addition to LEED requirements, comply with BAAQMD requirements referenced in Section 01 14 10.

B. Regulatory Requirements: In performing the work of this Section, comply with applicable requirements of the laws, codes, ordinances and regulations of the AHJ. Obtain necessary approvals from the AHJ.

C. Fire-Test-Response Characteristics: Where indicated, provide assemblies identical to those tested for fire resistance per ASTM E119 by UL or another testing and inspecting agency acceptable to authorities having jurisdiction.


D. Corrosion Analysis:

1. Conduct a component-by component analysis of potential corrosion resulting from galvanic action between materials, for components of curtain wall and aluminum panels and provide report.

2. Submit Corrosion Analysis Report to TJPA Representative, for review prior to submission of Shop Drawings. Ensure Sample and test results are available upon request.

3. Separate dissimilar metals to prevent electrolytic action. Provide letter of confirmation that infill components, accompanying trims and flashings and attachments to adjacent construction are designed to eliminate potential for galvanic action between components.

E. Contractor’s Inspection Program:

1. Provide and maintain an effective QC program and perform sufficient inspections, surveys and tests of all items of Work, including those of other trades, to ensure compliance with the Contract Documents and the requirements of AHJ.

2. Furnish appropriate facilities, accurately calibrated instruments and testing devices required to perform the QC operations with sufficient work forces to cover the construction operations within the actual construction sequences. Coordinate this work with the QC requirements of other Sections of the Specifications and with requirements of the TJPA and the AHJ.

F. Responsibilities for TJPA’s Inspection Services:

1. Provide adequate notice of construction activities to allow timely inspections and observation of Contractor tests, and be available for “Pre-fabrication Meetings” and “Pre-Construction Meetings”.

G. TJPA’s Inspection Program: TJPA’s inspection agent will conduct such inspections as necessary to verify compliance or deficiencies of all items listed in Part 3 of this Section:

1. The TJPA’s Inspection Agent will perform observation of the assembly during construction at timely occurrences to satisfy governing the AHJ and the quality control established for the Project by the Contract Documents.

2. The TJPA’s Inspection Agent will conduct the following tests and perform the following inspections:

a. Examination: Survey of the supports to receive the work of this Section and applicable corrective work performed, if any. Verification that the supporting structure is properly aligned and within the designed tolerances.

b. Connections and Anchors: Verification that all anchors are properly placed, welded or bolted. Verification that correct anchoring and/or materials are used in lieu of others where there are field changes. Inspection of welding and bolting where connections are stressed to 50 percent or more of allowable values. Verification of the calibration of wrenched, review of bolting procedures and inspection of joint surfaces prior to bolting for all bolted connections related to the plaster system. Verification of welder’s license, qualifications and welding procedures for all welds related to the exterior enclosure. Verification of proper welding or bolting of reset connections.

c. Joints and Sealants: Verification that horizontal and vertical movement joints have been provided, and verification that joints are free from obstructions. Confirmation that accepted sealant materials are provided. Verification that sealant joints are properly sealed, and that the materials possess sufficient elongation capacity for movement anticipated. The recording of any unanticipated movement or displacement beyond performance criteria.

d. Test reports on material testing and assembly testing as specified.


H. 1 Mockup: Prior to installing plaster work, construct panels to verify selections made under Sample submittals and to demonstrate aesthetic effects as well as qualities of materials and execution. Build mockups to comply with the following requirements, using materials indicated for final unit of Work.

1. Locate mockup on-site in the location and of the size indicated, or, if not indicated, as directed by TJPA Representative.

2. Erect mockup 96 by 96 inches by full thickness in presence of TJPA Representative using materials, including lath, support system, and control joints, indicted for final Work.

3. Notify TJPA Representative 7 days in advance of the dates and times when mockup will be constructed. 1

4. Demonstrate the proposed range of aesthetic effects and workmanship to be used on this Project.

5. 1 Obtain TJPA Representative’s approval of mockup before start of plaster Work. 6. Retain and maintain mockup during construction in an undisturbed condition as a

standard for judging the completed Portland cement plaster Work. 7. Approved mockup may become part of the completed Work if undisturbed at time of

Substantial Completion. 1

1.8 DELIVERY, STORAGE AND HANDLING

A. Deliver cementitious materials to Project site in original packages, containers, or bundles, labeled with manufacturer’s name, product brand name, and lot number.

B. Store materials inside, under cover, and dry, protected from weather, direct sunlight, surface contamination, aging, corrosion, and damage from construction traffic and other causes.

1.9 PROJECT CONDITIONS

A. Environmental Requirements, Comply with requirements of referenced plaster application standards and recommendations of plaster manufacturer for environmental conditions before, during, and after plaster application.

B. 1 DELETED 1

C. Ventilation: Provide natural or mechanical means of ventilation to properly dry Portland cement plaster until cured.

D. Protect contiguous work from soiling and moisture deteriorization caused by plastering. Provide temporary covering and other provisions necessary to minimize harmful spattering of plaster on other work.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Manufacturer List: Products of following manufacturers are acceptable subject to conformance to requirements of Drawings, Schedules and Specifications:

1. Trims and metal lath:

a. Gordon, Inc. b. Fry Reglet Corporation c. California Expanded Metal d. Metalex (Keene Products) e. Clark Dietrich Building Systems


2.2 STRUCTURAL STEEL FRAMING

A. Refer to 05 41 00 Structural Metal Stud Framing System.

2.3 NON-LOAD-BEARING STEEL FRAMING

A. As required by calculations, refer to Section 09 22 19 Non-Structural Metal Framing System.

2.4 LATHING MATERIALS

A. Paper weatherbarrier: Complying with UBC 94 Standard y14-1 and FS UU-B-790, Type I, Grade D (vapor permeable), Style 2, except with a water resistance of 60 minutes; Fortifiber Corp. "Super Jumbo Tex" or equal.

1. As an option to the paper weatherbarrier, the Contractor may use Tyvek StuccoWrap with Tyvek HouseWrap tape by DuPont.

B. Lath:

1. Expanded diamond mesh lath weighing 3.4 lbs./square yard. made from zinc-coated (galvanized) steel sheet to produce lath complying with ASTM C 847, by Western Metal Lath, Amico West, Cemco or equal.

2. On solid surfaces use self-furred lath.

C. Tie wire: Galvanized, annealed steel wire 16-gage for lath to supports and 18 gage for accessories to lath.

D. Screws: “Fastenseal” self-sealing screws conforming to ASTM F 1667, with a 0.125-inch diameter shank, a 7/16-inch diameter head, length to satisfy Code but not less than required to penetrate stud a minimum of 3 full threads, with an HDPE spacer containing butyl rubber, by Fasten Seal (www fastenseal.com) – no known equal.

2.5 PLASTERING MATERIALS

A. Pre-mixed, fiber-reinforced brown and scratch coats: “Fiber 47 Fastwall Scratch and Brown” by La Habra/Parex, or equal.

B. 1 Pre-mixed finish coat: Parax “Image” smooth, an exceptionally smooth, durable, acrylic polymer-based finish. Color to be Benjamin Moore BM 1548 classic grey to match TJPA’s Representative sample. 1

C. Sand for scratch and brown coats: ASTM C 897 or C 144, graded in accordance with the scratch and brown coat manufacturer’s instructions.

D. 1 Fiber glass reinforcing mesh: Standard 4.5oz fiberglass mesh with a coating compatible with Portland cement plaster, “KrackShield” by Parex-LaHabra, or equal by Omega Products Internationa, Cota Industries, Inc., or Dryvit. Provide 48 inches wide rolls.

E. Acrylic admixture: “Adacryl” bonder by Parex/La Habra, or equal by Synergy. Use same manufacturers products for all plaster coats. 1

F. Reinforcing mesh adhesive: “Stucco Level Coat” by Parex, or equal compatible adhesive with brown and finish coats, as recommended by the mesh manufacturer.

G. Pipe and electrical boxes flashing: Quickflash assemblies by Quickflash Products – no known equal.

H. Sealant: Silicone sealant as specified in Section 07 92 00.


I. Water: Potable and fresh, from domestic source. 2 . . . J. Control Joints: Factory primed extruded aluminum J shaped. Plaster trims at ends as

indicated on drawings. . . . 2

2.6 PLASTER MIXES

A. General:

1. Mix each batch for the same amount of time. 2. Mix batches the same size, using the same amount of water, to ensure consistency. 3. Briefly re-mix before using (approximately 2 minutes). 4. Use immediately after mixing. Do not retemper. 5. Add admixture after dry components and the majority of the water have been mixed. Mix

no longer than required to provide a uniform mixture. DO NOT OVER-MIX. 6. Do not re-temper mixes over 20 minutes old.

B. Plaster proportions:

1. Base coats: Mix bagged sand/fibers with sand and acrylic admixture (one quart for an 80 lbs bag of premixed scratch and brown coats, unless other proportions are recommended by La Habra/Parex).

2. Finish coat: Specified premixed finish coat.

C. Mixing: Mix as accurately as possible. Add ingredients to the mixer from calibrated containers. Do not use materials that are caked, lumpy, dirty or contaminated by foreign materials.

PART 3 - EXECUTION

3.1 GENERAL

A. The applicable provisions of ASTM C 1063 and ASTM C 926, govern the work of this Section, except as specified herein.

3.2 WEATHER BARRIER (PAPER)

A. Install weather barrier over the air/water membrane, specified in Division 07, with a minimum number of fasteners. Lap shingle fashion 2 inches. No weather barrier is required on soffits, and on concrete substrates not covered by a waterproofing membrane.

B. Lap weather barrier over flange of accessories to prevent direct contact between lath and accessories and to ensure water tightness.

C. Drape and continue weather barrier uninterrupted behind control joints.

D. Interface weather barrier with flashing materials to properly discharge water to the exterior. Correct absence of flashing prior to installing weather barrier.

E. Seal unused holes from fasteners in weather barrier with silicone sealant specified in Section 07 92 00.

3.3 LATHING

A. Comply with ASTM C 1063, except as specified below, and where Code requirements are more stringent.

2.7 ALUMINUM PANEL CLOSURES

1. Provide aluminum panel closures as specified in Section 07 42 13 for W-16A flat pan prefinished aluminum panel.

2. Panel color is to match plaster finish color.


B. Apply lath taut, with long dimension at right angle to supports. Work from right to left, extend both horizontal and vertical factory flaps. Make sure that paper weather barrier encloses all surfaces to be plastered.

C. Apply first course at bottom and work up. Make overlaps shingle fashion to assure waterproof joints; lap paper-to-paper and lath-to-lath. Stagger vertical joints. Lap joints one-inch minimum and horizontal joints 1/2-inch minimum. Wire-tie intermediate horizontal joints at 9 inches o.c. maximum.

D. Install metal lath panels so that each vertical joint is approximately centered in the panel beneath it. Wire-tie intermediate horizontal joints at 6 inches o.c. maximum.

E. Cut lath at control joints.

F. Attach lath to supports at 6 inches o.c.

G. At control joints, cut lath but continue paper backing uninterrupted behind lath.

H. Hold lath 1/4-inch clear of electrical boxes, columns and similar items projecting through the plaster.

3.4 METAL TRIM

A. Wire-tie at no more than 24 inches o.c. to metal lath or studs. Fastening accessories with screws is not acceptable.

B. Use trim in single length wherever length of run does not exceed longest standard stock length available. Miter or cope at corners with hairline joints, and seal with sealant specified in Section 07 92 00.

C. Set accessories level, plumb and true to line with a tolerance of not more than 1/8-inch in 5 feet. Shim as required and align joints with concealed splice or tie plates.

1. Where joints meet, make sure that design is uninterrupted, and that joints between accessories are flush, in-line and hairline tight. Where joints occur between parallel stud or channel supports, install an additional support for the individual flanges.

2. Accessories that butt each other need to be lapped, sealed, soldered or welded, and/or stripped with flexible flashing.

D. Install corner reinforcement at external corners.

E. Provide casing beads at the following locations:

1. Where plaster termination abuts other finishes, isolate casing bead from contact with adjacent finishes with 1/4-inch thick tape sealant specified in Section 07 92 00.

2. Where plaster termination is not covered by another finish or applied trim, provide cased opening by installing casing bead around perimeter of opening as detailed.

F. Control joints:

1. Install vertical control joint first, continuous from top to bottom of wall; install horizontal control joints second and split where it meets the vertical control joint.

2. Install joints plumb, level, evenly spaced where so indicated, and in one piece at the spacing indicated.

3. Follow manufacturer's directions for their installation. 2 . . . 4. Install as indicated on drawings. . . . 2


3.5 PLASTERING

A. General: Comply with ASTM 926, except as specified below, and where Code requirements are more stringent.

B. Type: Smooth-finished Portland cement plaster installed on metal lath; one-inch total thickness.

C. 1 When the finish coat sets, water-trowel it to smooth and even surface free of tool marks, blemishes or cracks, matching the approved mockup in all characteristics, as approved by the TJPA Representative. 1

D. Protection:

1. Protect adjacent surfaces from damage as a result of plastering operations. 2. Protect plaster against extreme climatic conditions, including uneven and excessive

evaporation from hot dry air.

E. Application - general:

1. Provide sufficient manpower and equipment to ensure a continuous operation free of cold joints, scaffold lines, texture variations, and other objectionable conditions.

2. Plaster surfaces in one operation once the application of any coat begins. 3. Stop plaster at control joints, edges or corners only. Plaster in one operation, full height

and width between control joints. 4. Plaster flush with metal trim members and make corners square and true. 5. Where permanent grounds are too far apart to serve as guides for rodding, provide

supplemental plaster screeds as required. Establish true surfaces with rods before setting the screeds. Keep grounds clean and free of plaster.

6. Finish plaster in a true, plumb or level plane flush with grounds.

F. Plastering:

1. Scratch coat: Apply with sufficient material and pressure to form good full keys, and to cover well.

a. Thickness of scratch coat shall be 1/2-inch when measured from backing to crest of scored plaster.

b. Scratch before plaster hardens to provide sufficient mechanical key for brown coat. c. Cure acrylic-modified plaster in accordance with its manufacturer's instructions,

including holidays and weekends. Do not over-wet by excessive curing, unless hot conditions exist.

2. Brown coat:

a. Dampen the scratch coat thoroughly and apply the brown coat to a 3/8-inch thickness.

b. Bring to a true, even surface by rodding and floating, and leave slightly rough to receive the reinforcing mesh.

c. Begin floating only after hydration of the cement has commenced and sufficient moisture has evaporated, so that surface sheen has disappeared, but before plaster has become too rigid to be moved under the float.

d. Cure acrylic-modified plaster in accordance with its manufacturer's instructions, including holidays and weekends. Do not over-wet by excessive curing, unless hot conditions exist.


3. Reinforcing mesh adhesive:

a. After the brown coat is properly cured, apply a layer of reinforcing mesh over the brown coat in a 1/8-inch thick bed of cement adhesive.

b. Cement adhesive may be a proprietary adhesive as specified, or a job-mixed preparation consisting of 48 lb. of common Portland cement, 10 lb. of plaster grit silica sand, and emulsified acrylic admixture mixed with water.

4. Reinforcing mesh: The mesh is required over the brown coat and shall be completely embedded as follows by 3 different methods as selected by the Contractor and successfully demonstrated on the approved mockup. In all cases, completely embed the mesh into the base coat free of wrinkles and fish mouths, and trowel smooth, ensuring that no mesh is visible. A minimum 2-inch overlap is required at mesh joints.

a. Method One: After application of brown coat and before final set occurs, fully embed mesh into the brown coat.

b. Method Two: After brown coat has properly cured, apply the base coat over the brown coat a minimum of 1/6-inch thick and completely embed mesh.

c. Method Three: The finish surface must be clean and free of loose debris, dirt, dust, efflorescence, grease, oil, curing agents and cleaning solutions. Painted or glossy surfaces may need to be roughened to ensure proper bond of the base coat. The substrate must be structurally sound. Apply the base coat over the existing finish a minimum of 1/6-inch thick and completely embed mesh.

d. After embedding mesh, the surface shall be left suitable for the application of the finish.

5. Finish coat: Apply finish coat when temperatures are as recommended by manufacturer instructions.

a. Apply the finish coat in a double back operation to a total minimum thickness of 3/16-inch.

b. Trowel on a tight first finish coat a minimum of 1/16-inch thick and draw it up to an even surface before applying the double back coat.

c. When the finish coat sets, trowel it to smooth and even surface free of tool marks, blemishes or cracks, matching the approved mockup in all respects, as approved by the TJPA Representative.

G. Plaster flush with metal frames and other built in metal items or accessories which act as plaster grounds. Provide a "V" cut with the edge of the trowel where plaster abuts metal frames.

H. Where permanent grounds are too far apart to serve as guides for rodding, provide supplemental plaster screeds as required.

1. Establish true surfaces with rods before setting the screeds. 2. Keep grounds clean and free of plaster. 3. Finish plaster in a true, plumb or level plane flush with grounds.

I. Entire plaster must be flush with top of accessories; wavy finish (higher at accessories than in the field) is not acceptable.

3.6 FIELD QUALITY CONTROL

A. The curing periods recommended by the manufacturer shall be considered as minimum requirements. Be responsible for determining the most effective procedure for curing and time lapse between application of coats, based on climatic and job conditions.


B. Completed plaster shall match approved mockup, be within the tolerances specified, be uniform in thickness, texture and color when applicable, free of cracks, blisters, pits, checks and other defects.

C. Repair, or remove and replace, as determined by the TJPA Representative, lath/plaster that does not meet these requirements, with materials satisfactory to the TJPA Representative.

3.7 REPAIRING/CLEANING/PROTECTING

A. Cut, patch, repair and point-up defective plaster. Repair cracks and indented surfaces by moistening plaster and filling with new material, troweled or tamped flush with adjoining surfaces. Point-up finish plaster surfaces around items built into, or penetrating the plaster.

B. Promptly remove plaster spatter and droppings from adjacent surfaces. Repair surfaces which have been stained, marred or otherwise damaged during plastering operations at no additional cost to the Owner.

END OF SECTION 09 24 00

SPECIFICATION ISSUE LOG Revision Date

0 09/12/14

1 12/16/14

2 02/27/15

ROOF PARK LEVEL 86' - 9"

5

ROOF PARKTERRACE LEVEL

101' - 11"

SERVICECORRIDOR

PK242

MEN'SRESTROOM

PK240

W-16A

W-21

W-21

W-16A

RESTAURANTTERRACE

PK233

WOMEN'SRESTROOM

PK222RESTAURANT

PK220

W-21

18CC3

18CC3

8CC1

5

15CC3CC1/W

8

4 6

ROOF PARK LEVEL 86' - 9"

MACHINE ROOMAND LOW ROOF

105' - 3"

5

ROOF PARKTERRACE LEVEL

101' - 11"

RESTAURANTPK220

RESTAURANTTERRACE

PK233

120' - 6" T/O PARAPET

117' - 6" T/O SLAB

119' - 6 1/4"T/O SLAB

W-16A

W-21

W-17

W-19

W-17

W-2

PAINTED ALUM TRELLIS

STRUCT STEEL SUPPORTMEMBERS (REF TOSTRUCTURAL)

W-16A

W-21

W-21

W-16A

17'-1 3

/4"

731

11CC

11CC

31CC

7CC

31

1CC

7CC

80' - 7 1/2"

14'-3 1

/4"

3'-4"

15'-2"

0 2 4 8 12

SCALE IN FEET

SHEET NUMBER SEQUENCE NUMBER

SCALE: SIZE FACILITY NO. REVISION.

DRAWN BY: DATE:

DESIGNED BY: CHECKED BY:

APPROVED

APPROVED

APPROVED

ARCHITECT / ENGINEER SEAL

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TRANSBAY JOINT POWERS AUTHORITYCONSULTANT:

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1615141309 10 11 12

Copyright 2006 by the City and County of San Francisco. These documents are the sole property of the City andCounty of San Francisco and are protected by the Copyright Act. Any reproduction, publication, or use by anymethod, in whole or in part, without the express written consent of the Transbay Joint Powers Authority is prohibited.

NOT FORCONSTRUCTION

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NO.

DATE

DESCRIPTION

BY

PROJECT MANAGER

PROJECT MANAGER

PRINCIPAL ARCHITECT G. METZGER

S. ROTT

E. DEL ANGEL

W.R. BRADLEY

N

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S. BANSAL 12/16/2014

A1-6251

1

ISSUED FOR CONSTRUCTION

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SCALE: 1/4" = 1'-0"A1-6251

A PARTIAL SECTION AT STAIR

SCALE: 1/4" = 1'-0"A1-6251

B SECTION THROUGH ROOF PARK RESTAURANT

ferrantt

Text Box

SKA-4635

ferrantt

Text Box

BASED ON SHEET A1-6251

4 6

C

C.3

E

F

G

D

D.4

D.8

E.2

E.6

F.7

5

10" TYP

2.1

%

TOC 80' - 7 1/2"

2.1

%

9'-6"

9'-6"

PERIMETER CONCRETEKNEE WALLS (REFERTO STRUCTURAL) 80' - 10 1/2"

2'-0"

8'-8 7/8" 2'-8 5/8" 14'-4 1/2" 2'-0"2'-0"

1'-0"

6'-4 1/8"

8'-4 1

/8"

1'-0" DIA FTG TYP(REF TO STRUCT)TOC 86'-2"

3'-1 1

/4"

6'-0 3

/4"

9'-6 7/8" 16'-3 1/8" 5'-2 3/8"

CONC SHEARWALL (REFERTO STRUCT)

CONC FTGS TYP(REFER TO A1-2904 SLAB EDGEDWGS)

2'-1 7/8"

9'-8 1

/8"

10'-3 1

/4"

8 1/4"

2'-3 1/8"

3'-7 1/4"

11'-11 5

/8"

13'-0 3

/8"

15'-6 3

/8"

5'-10 3/4"

7'-7 3/4"

1'-4 1

/2"

8'-9 3/8"

1'-11 3

/4"

3'-8"

6'-11 3

/4"

8'-8 5/8"

8'-2 3/8"

10 7

/8"

3'-4 1

/4"

4'-9 1

/8"

6'-2 1/8"

5'-7 1/4"

4'-1 5/8"

3'-8 1/2"

2'-8 7

/8"

4'-2 1

/2"

1'-10 1

/8"

3'-4 3

/8"

1'-0" DIA FTG TYP(REF TO STRUCT)TOC 86'-2"

10"

15'-9 3

/8"

1'-0"

10"

10"

1'-10 7

/8"

3'-5 1

/4"

3'-11 1

/8"

4'-2 3

/8"

4'-3 3

/8"

1'-5 1

/2"

1'-9 3

/8"

2'-7 3/4" 3 5/8"

1'-7 3

/4"

8'-0 3

/4"

6'-10 3

/4"

3'-1 3

/4"

1'-2 1

/4"

1'-3 5

/8"

1"

CONC SHEARWALL (REFERTO STRUCT)

5'-8 1

/4"

3'-0 7

/8"

1'-10 7

/8"

6"

1'-0 3/8"

11 3/8" 1 1/8"

4'-6 3/8"

3'-3 1/8" 1'-6 5/8" 1'-6 1/4"

8'-8"

1'-5 3

/8"

1'-10 7

/8"

2'-4 7

/8"

3'-0 7

/8"

4'-0 1

/4"

3'-11 3

/8"

2'-11 1

/2"

2'-7 1

/4"

1'-8 5

/8"

1'-1"7'-7 1/8" 1'-5 7/8"

14'-11 5/8"

1'-5 3/8"

3 3/8" 4'-6 1/4"

2'-0 1/2" 5'-5 7/8"

2'-6 1

/2"

3'-6"

3'-1 1/4"

2'-1 7/8"

4 3

/8"

1 5

/8"

8"

1'-2 5

/8"

2'-10 7

/8"

23'-3 1/2"

1'-8 3/8" 18'-7 3/8"

3'-5 5/8" 11'-8 3/8"

8'-8 7/8"

8'-8 7/8" 5'-0 5/8"

3'-9 3/4"

PERIMETERCOLUMNS (REFERTO STRUCTURAL)

7'-4 5/8" 7'-6 1/8" 5'-2 1/8" 2'-5 3/4" 4'-5 1/8" 4'-3 3/4" 4'-2"

2'-3 7/8" 5'-5 5/8" 3'-8 7/8" 4'-0 1/2" 11'-6 5/8"

3'-8 1

/8"

5'-4 5

/8"

5'-4 1

/4"

6'-1 1

/4"

6'-1 1

/8"

5'-10 5

/8"

5'-3 1

/2"

4'-4"

7 1/2"2'-7 7/8"

5'-1 1/4" 3'-9 1/2"

12'-1 1/2" 1'-0"11"

10"10"

9"9"

10"10"

10"10"

10"10"

10"10"

10"

5'-0 3

/4"

FOR SL SIZESREFER TO 10

A1-2969

3'-8 3

/8"

2'-8 5

/8"

1'-11 1

/2" 3

'-8 1

/2"

3'-0 1

/4"

6'-4"

8'-3 1

/8"

4'-0 3

/4"

2'-2 1

/4"

5'-3"

4'-0 7

/8"

5'-5 1

/8"

1'-10 7

/8"

2'-4 1

/8"

3'-7 3

/8"

4'-5 1

/4"

4'-3 3

/8"

8 7/8" 1'-11 1/2"2'-6 1/4"

4'-1 1/8"

4'-4 5/8" 5'-10 1/2" 5'-5 5/8" 2'-2 1/2" 4'-6 1/4" 4'-9 3/4"

4'-8 5/8" 8'-10 3/4" 4'-2 5/8" 4'-1 1/2" 3'-9 3/8"

1'-8"1'-5 5

/8" 1

'-9 1

/2"

1'-0 3

/8"

1'-1 7

/8"

2'-1 3

/4"

1'-9 7

/8"

1'-0 1

/2"

1'-11 1

/2"

10 1

/2"

8'-8 7/8" 10" 4'-10 1/4" 10"

10"

12'-0 7

/8"

10"

1'-0"

NOTE: INSIDE WALL SEGMENTDIMENSIONS DEFINE CONC WALLLOCATIONS AND EDGE OF SLABEXTENTS (REFER TO A1-2904 FORSLAB ELEVATIONS)

NOTE: INSIDE WALL SEGMENTDIMENSIONS DEFINE CONC WALLLOCATIONS AND EDGE OF SLABEXTENTS (REFER TO A1-2904 FORSLAB ELEVATIONS)

11'-5 1/2" 5'-11 1/4" 2'-6"

3'-1"

17'-8 1/4"

3'-10 1

/4"

4'-0 1

/4"

3"

8'-2 1

/2"

26'-6 3/8"

2'-5 3/8"

4'-10 5

/8"

2'-10 1/2"

1 1

/4"

2'-0 7

/8"

2'-3 5/8"

1'-0 5/8"

5'-6 5

/8"

5'-3 1/4"

2'-10 5

/8"

2'-6 1

/4"

23'-0 5/8"

4'-5 3/4"

5 1

/8"

3'-6 1

/4"

13'-8 3/4"

13'-0"

2'-2"

16'-5 1/2" 15'-9"

9'-11 1/4" 3'-5"

6'-11"

2'-9 1

/2"

9'-11 1/4" 3'-5"

6'-11"

2'-9 1

/2"

42'-6" 42'-6"

8'-0"

23'-0"

9'-6"

6'-3"

5'-3"

5'-3"

6'-3"

9'-6"

23'-0"

8'-0"

3'-0"

16'-5 1/2" 15'-9"5'-1"

7'-2 3

/8"

81' - 1"

8"

8"

10"

2'-0"

8"

8"

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PROJECT MANAGER

PROJECT MANAGER


S. ROTT

E. DEL ANGEL

W.R. BRADLEY

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A1-2970

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SCALE: 1/4" = 1'-0"

1 LOWER ROOF PARK LEVEL - EOSA1-2902

ferrantt

Text Box

SKA-4636

ferrantt

Text Box


4 6

C

C.3

E

F

G

D

D.4

D.8

E.2

E.6

F.7

5

A1-5802

C

A1-7815

E

A1-7815

AA1-7816

A

A1-5851

B

A1-5851

A

AA1-6251

BA1-6251

RESTAURANTPK220

SERVICEELEVATORVESTIBULE

PK221

SERVICECORRIDOR

PK242

MEN'SRESTROOM

PK240

TOFF 86' - 9 1/2"

TOFF 86' - 9 1/2"

TOFF 80' - 7 1/2"

16CC1

5CC

5

31CC

31CC

SE202

9'-9 1/8" 3'-11"

1'-0 1/2"

4'-0 7/8"

16'-0 1

/4"

8'-0 1

/2"

16'-11 3

/4"

14'-11 3/4" 4'-1 1/8" 11'-4" 7 5/8"

1'-0"

3'-0 7/8"

7CC

11CC

MEPSHAFT

17'-5"

3'-1 1

/8"

5'-3 1

/2"

10'-8 1/8" 12'-3 3/4" 3'-1 5/8"

WOMEN'SRESTROOM

PK222

CC11

STAIR 204

STAIR 203

UP

UP

3A1-8900

2A1-8900

8A1-8900

7A1-8900

8A1-8900

A1-8906

3

A1-8906

1

A1-8906

1

A1-8906

2

A1-8906

4

FUTURE TENANTLAYOUT

3'-6 1

/4"

A1-9031

1

A1-9030

1

7'-11 1

/4"

11CC 7

CC

31CC

JANITOR'SCLOSET &STORAGE

PK243

SUN SHADEOUTLINE ABOVE

W-17

W-19

W-2

W-17

W-16B

W-21

W-21

W-2

W-17

CC5

FUTURE ELEVATOR SHAFT

9'-2" 1'-7 5/8"

6'-0"

10"

5'-2"

6'-0"

11'-5 1/2"

SHAFT OPENING

14'-4 1/2"

SH

AF

T O

PE

NIN

G

24'-0"

1'-8"

B,C31

11'-6"

A1-7579

5

31CC/B,C

FD

FD

FD

FD

A1-8901

1

86.75'

86.75'

42'-6" 42'-6"

8'-0"

23'-0"

9'-6"

6'-3"

5'-3"

5'-3"

6'-3"

9'-6"

23'-0"

8'-0"

8CC1

8CC1

15CC3

18CC3

CC1/W8

CC5

5CC

5CC

5CC

31CC

5CC

5CC

5CC

65CC

1CC/B,C

11CC/B

11CC

6CC

2'-5 1

/2"

TY

P

8"

COLUMN CENTERLINETO FACE OF W-2CLADDING (SETTINGOUT CURVE)

W-2 CLADDING FACEOF CLADDING SETTINGOUT CURVE)

LC

LC

W-2 CLADDINGZONE

COL

COL

2'-5 1

/2" T

YP

W-2 CLADDING FACEOF CLADDING SETTINGOUT CURVE)

W-2 CLADDINGZONE

8"

31

31B,C

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PROJECT MANAGER


S. ROTT

E. DEL ANGEL

W.R. BRADLEY

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E 140

of

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If

this

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t is

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1 ROOF PARK LEVEL RESTAURANT PLANA1-2602A1-2602

ferrantt

Text Box

SKA-4637

ferrantt

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