Page | 2 · SECTION 08 91 00- FENCING AND GATES ETB #0914 08 91 00 - 1 North Central Advanced...

New River Community & Technical College – Arts & Sciences Center

Prepared By: E.T. Boggess Architect, Inc. / MBAJ Architecture Page | 2

CLARIFICATIONS:

1. The last day for questions shall be August 16th, 2013 at 3:00 PM.

2. All questions are to be submitted in writing to [email protected] or faxed to 304.425.2028.

3. All B&O Taxes and Sales Tax are Applicable to this Project. Satisfaction of B&O taxes is the

responsibility of the G.C. if Single Prime, and Each Prime Contractor if Multi-Prime.

4. The Early Site Work Contractor was Laurita, Inc. 302 Dents Run Road, Morgantown, WV 26501

Phone number: 304-296-7531.

REVISIONS AND ADDITIONS:

PRE-BID SIGN IN SHEET

SPECIFICATIONS: 1. Specification Section 08 91 00 Aluminum Fencing and Gates

a. ADD Specification Section 08 91 00 in its Entirety.

2. Specification Section 10 21 23 Cubicles

a. ADD Specification Section 10 21 23 – Cubicles in its Entirety

3. Specification Section 07 27 26 Fluid Applied Membrane Air Barrier

a. ADD Specification Section 07 27 26 Fluid Applied Membrane Air Barrier in its Entirety

VOLUME 1 DRAWINGS: 1. Sheet G101 V1 and G101 V2

a. REPLACE Site map with SK-C1

b. DELETE Sheet E702 Luminaire Schedule

2. Drawings A222, A223 & A224

a. REPLACE Elevation Note #13 Metal Trellis System with “NOT USED”

b. REPLACE Elevation Note #14 Metal Shingles with “NOT USED”

3. Drawing A902

a. DELETE Enlarged Plan F1 & Interior Elevations F3, F5 & F6.

VOLUME 2 DRAWINGS: None.



QUESTIONS AND ANSWERS:

1. Would you consider Top Gard Cap for Concrete Bollards? Answer: Yes, as long as your Bollard Products are equivalent to or exceeds all the specified product requirements in the contract documents including any warranties.

2. Would you consider Hohmann & Barnard Mortar Collection System (Mortar Trap)? Answer: Yes, provided products are equivalent to or exceed specified product requirements.

3. Would you consider Hohmann & Barnard Ladder Joint Reinforcement (220 Ladder Mesh)? Answer: Yes, provided products are equivalent to or exceed specified product requirements.

4. Would you approve Versico, EPDM membrane as an approved equal as listed in specification section: 075323 EPDM Membrane? Answer: Yes Versico, EPDM membrane is approved as long as the product is equivalent to or exceeds each listed product in the specifications including any warranties.

5. Can the proposed subcontractor/supplier list be submitted within 2 hours of bid opening instead of with the bid? Answer: No. The list needs to be provided with the bid. Bidders have up to Two Hours after the bid to submit any revisions or updates by fax to the owner.

6. Can the AISC Certification requirements be waived for the steel fabricators?

Answer: No.

7. Can The AISC Certification Requirements be waived for the steel erectors? Answer: No.

8. Supplementary Conditions Section 11.31 states that the contractor is to carry builders risk insurance. In the Multiple Prime Bid, Who is to carry the cost of the builders risk insurance? If GC, the value of all the multiple primes would need to be issued or an allowance established. Answer: In multi-prime bid scenario, each bidding contractor will be responsible to carry the cost of the builder’s risk insurance.

9. Please confirm the Electrical Contractor is responsible for power and lighting distribution throughout the building and the GC is responsible for utility company fees and use charges? Answer: Yes.



10. Specification Section 03 35 10 – 2.3C states color to be selected from Manufacture's full range. Please confirm this is from the standard color chart and not custom, exotic, or premium color charts? Answer: Full Range of Colors includes Standard and Premium Colors. No Custom or Exotic colors will be required.

11. Specification Section 03 35 11 – 2.2.A.2 & 3 states color to be selected from full range of colors. Please confirm this is from the standard color chart and not custom, exotic, or premium colors? Answer: Full Range of Colors includes Standard and Premium Colors. No Custom or Exotic colors will be required.

12. Can the AWI Certification requirements be waived for the Architectural Casework Fabricators? Answer: No.

13. Please confirm if B&O tax is required for this project and if so, what is the rate? Answer: Yes B&O Taxes are required at the Rate of 2% for new construction.

14. Specification Section 07 42 15 ‐ 2.5 ‐ B2.1 states color to be selected from Manufacture's full

range. Please confirm this is from the standard color chart and not custom, exotic, or premium colors? Answer: Full Range of Colors includes Standard and Premium Colors. No Custom or Exotic colors will be required.

15. Specification Section 08 33 23 ‐ 2.4A.1 states color to be selected from manufacturer's full range. Please confirm this is from the standard color chart and not custom, exotic, or premium colors. ? Answer: Full Range of Colors includes Standard, Custom and Premium Colors. No Custom or Exotic colors will be required.

16. Specification Section 08 41 13 ‐ 2.3F and 08 44 13 ‐ 2.3F states color to be selected from manufacturer's full range. Please confirm this is from the standard color chart and not custom, exotic, or premium colors? Answer: Full Range of Colors includes Standard and Premium Colors. No Custom or Exotic colors will be required.

17. Confirm site map shown on G101 is incorrect? Answer: Yes, see SK-C1 for Site Map.



18. Specification Section 08 90 00 ‐ 2.8B.1 states color to be selected from manufacturer's full range. Please confirm this is from the standard color chart and not custom, exotic, or premium colors? Answer: Full Range of Colors includes Standard and Premium Colors. No Custom or Exotic colors will be required.

19. Specification Section 09 30 00 ‐ 2.6B states color to be selected from manufacturer's full range. Please confirm this is from the standard color chart and not custom, exotic, or

premium colors. Answer: Full Range of Colors includes Standard, and Premium Colors. No Custom or Exotic colors will be required.

20. Is Specification Section 10 13 00 Directories included in the $20,000 Interior Signage

Allowance or to be included in the base bid? Answer: Directories are in the $20,000 Interior Signage Allowance.

21. Please confirm, all exterior site signage is part of the exterior signage allowance (stop sign layout note #29/C1, parking signs E&K/C9). Answer: Exterior Signage Allowance is for Exterior Entry Sign (Drawing A511 and Building Dimensional Lettering). All other signage is to be in Base Bid.

22. Please confirm, all prime contractors are to provide and install their own equipment/ housekeeping pads as required? Answer: Multiple Prime Contractors are to coordinate with the GC (Project Expeditor), for size and location of all Equipment/ Housekeeping Pads, as GC is responsible for Pad Placement.

23. Is the Cubicle Curtain Track in Respiratory Therapy Lab AH01 part of this contract? Answer: Yes, See Revisions and Additions Above.

24. Please indicate the location of Elevation Note #13 Metal Trellis and Elevation Note #14 Metal Shingles? Answer: Note #13 and Note #14 on Sheets A222, A223 & A224 should read “Not Used”.

25. Please Provide Specification Section for the Air and Moisture Barrier for the exterior Walls. Answer: Specification Section 07 27 26 Fluid Applied Membrane Air Barriers has been added. See attachments.

26. Are the Poly Carb Raised Letters and Internal Sign Structure for the Entry Sign Shown on Sheet A511 Part of the Exterior Sign Allowance or to be part of this contract? Answer: The Letters and Internal Sign Structure for the Entry Sign are to be part of the Exterior Sign Allowance. The Base for the sign is to be included in the base bid.



27. Please Provide a Specification for the Composite Metal Panel System for the Entry Sign

shown on Sheet A511. Answer: See Revisions and Additions Above.

28. Please Provide a Specification for the two Pre‐manufactured Doors at the Dumpster

Enclosure. Answer: See attached Revisions and Additions Above.

29. Please confirm all interior storefront frames are aluminum, Interior Elevations on A700 call for HM. Answer: Interior storefronts will be hollow metal frames.

30. Elevations F3, F5, F6/A902 show interior elevations for Catering 123. Does Catering 123 exist? Enlarged floor plan 1/A902 where Catering 123 elevations show, is the Elevator Machine room on the floor plans. Please clarify. Answer: NO, Catering 123 has been deleted from the project. See Revisions and Additions Above.

ATTACHMENTS:

1. Pre-Bid Sign In Sheet. 2. Email – Tag Issues 3. SK-C1 Site Map 4. Specification Section 08 91 00 Aluminum Fence and Gates 5. Specification Section 10 21 23 Cubicles 6. Specification Section 07 27 26 Fluid Applied Membrane Air Barrier

END OF ADDENDUM 1

1

Nathan

From: Nathan <[email protected]>Sent: Friday, August 09, 2013 10:29 PMTo: '[email protected]'; '[email protected]'; '[email protected]';

'[email protected]'; '[email protected]'; '[email protected]'; '[email protected]'; '[email protected]'; '[email protected]'; '[email protected]'; '[email protected]'; '[email protected]'; '[email protected]'; '[email protected]'; '[email protected]'; '[email protected]'; '[email protected]'; '[email protected]'; '[email protected]'; '[email protected]'

Cc: Steve Mackey; John Trail; Chris Clark; Associated General Contractors or Tennessee; '[email protected]'; '[email protected]'; ISQFT ([email protected]); ISQFT ([email protected]); Kanawha Valley Builders Association; Kevin Furlow- iSqFt; '[email protected]'; MCG-Hill - Theresa Tolley; McGraw- Hill ([email protected]); McGraw- Hill ([email protected]); Pittsburg Builders Exchange ; '[email protected]'; '[email protected]'; '[email protected]'; Valley Construction News

Subject: North Central ATC

All, It has come to our attention that multiple drawings were corrupted during our batch printing process and thus corrupted our “smart” tags that went to wrong drawings, we have corrected the issue. There were also two drawings that did not make it into the set (batch printing error), drawings A821 (A823 was placed in the set 2 times) and drawing A903, both are available in the downloadable Sets below. We are providing the drawings in three ways: 1. Individual PDF’s of the corrupted (FIXED) drawings An Email from Hightail will be sent to Share these files… 2. Complete Vol.1 drawings. CLICK LINK TO DOWNLOAD https://www.hightail.com/download/bWJxcmxldzh5UkhFdzhUQw 3. Complete Arch Drawings Only. CLICK LINK TO DOWNLOAD https://www.hightail.com/download/bWJxcmxldzg5bEJBSXRVag We apologize for the inconvenience. You should receive an email shortly with the electronic access to the drawings. Thanks, Nathan Turner Assoc. AIA, LEED Assoc. Project Manager

E.T. Boggess Architect, Inc. 101 Rockledge Avenue, Princeton, WV 24740 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~MAP T: (304) 425-4491 / C:(304) 617-1231 F: (304) 425-2028 www.etbarchitects.com

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SECTION 08 91 00- FENCING AND GATES

ETB #0914 08 91 00 - 1 North Central Advanced Technology Center WV-CTCS

PART 1 – General 1.1 SUMMARY A. Section includes: Ornamental fixed louver modular fencing panels fabricated with extruded

aluminum louvers and flat aluminum bars including extruded aluminum fence posts and aluminum louver gates.

B. Related sections: 1. Section 03 30 00 - Cast-in-Place Concrete: Concrete footings for support of fence

posts. 1.2 REFERENCES A. American Society for Testing and Materials (ASTM) Publications: 1. ASTM B209 - Aluminum and Aluminum-Alloy Sheet and Plate. 2. ASTM B221 - Aluminum-Alloy Extruded Bar, Rod, Wire, Shape, and Tube. 3. ASTM B117 - Standard Practice for Operating Salt Spray (Fog) Apparatus. 4. ASTM D822 - Tests on Paint and Related Coatings Using Filtered Open-Flame Carbon-

Arc Exposure Apparatus. 5. ASTM D2794 - Resistance of Organic Coatings to the Effects of Rapid Deformation

(Impact). 6. ASTM D3363 - Test Method for Film Hardness by Pencil Test. 1.3 SUBMITTALS A. Provide in accordance with Section 01 33 00 - Submittal Procedures: 1. Product data for components and accessories. 2. Shop drawings showing layout, dimensions, spacing of components, and anchorage

and installation details. 3. Sample: [8 by 10 inches] [203 by 254 mm] minimum size sample of fence panel

illustrating design, fabrication workmanship, and selected color coating. 4. Copy of warranty specified in Paragraph 1.4 for review by Architect. 1.4 WARRANTY A. Provide in accordance with Section 01 77 00 - Closeout Procedures: 1. 10 years warranty for factory finish against cracking, peeling, and blistering under

normal use.



PART 2 - PRODUCTS 2.1 ACCEPTABLE MANUFACTURERS A. Ametco (Basis of Design Ametco Phoenix Louvers)

B. Corvit Screening Solutions 2.2 MATERIALS A. Extruded aluminum: ASTM B221, Alloy 6063, Temper T-6. B. Sheet aluminum: ASTM B209 6063, Temper T-6. C. Grout: Non-shrink type, pre-mixed compound consisting of non-metallic aggregate, cement,

and water reducing and plasticizing additives. 2.3 FENCE SYSTEM A. Type: Ornamental fencing system consisting of Vertical fixed louver, modular fence panels

fabricated with extruded aluminum framing bars and supported by extruded aluminum fence posts.

B. Fence panel: 1. Fixed louver blades: Extruded tubular aluminum louver blades, inclined at 45 degrees,

and spaced to provide 100 percent direct visual screening. a. Size: 1/2 by 4 inches. b. Material thickness: 0.09 inch 2. Framing bars: Extruded aluminum flat bars welded to ends of louvers. 3. Panel height: As indicated on Drawings. 4. Panel width: As indicated on Drawings. C. Posts: 1. Type: 3 x 3 inch extruded tubular aluminum sections with solid aluminum caps. 2. Length: As indicated on Drawings. 2.3 GATES A. Provide gates of type and size indicated on Drawings. Equip gates with manufacturer's

standard hardware as required for complete functional operation. B. Type: Hinged swinging [single] [double] gate. 1. Construction: Welded frame fabricated with extruded aluminum tubing with aluminum

fixed louver panels to match fencing material.



2. Nominal size: Per manufacturer 3. Hardware: Per Manufacturer a. Hinges: Size and type as determined by manufacturer. Provide 2 hinges for each

leaf up to 6 feethigh and 1 additional hinge for each additional 24 inches in height or fraction thereof.

b. Latch: 3/4 inch diameter slide bolt to accommodate padlock. c. For double gates provide padlockable, 5/8 inch diameter center cane bolt

assembly and strike. 2.4 ACCESSORIES A. Fasteners: Stainless steel bolts of type, size, and spacing as recommended by fence

manufacturer for specific condition. 2.5 FACTORY FINISH A. Aluminum fence panels and posts shall receive polyester powder coating. [Large gate

panels shall be coated with 2-part polyurethane coating.] B. Polyester powder coating: Electrostatically applied colored polyester powder coating heat

cured to chemically bond finish to metal substrate. 4. Minimum hardness measured in accordance with ASTM D3363: 2H. 5. Direct impact resistance tested in accordance with ASTM D2794. Withstand 160 inch-

pounds. 6. Salt spray resistance tested in accordance with ASTM B117: No undercutting, rusting,

or blistering after 500 hours in 5 percent salt spray at 95 degrees F and 95 percent relative humidity and after 1000 hours less than 3/16 inch undercutting.

7. Weatherability tested in accordance with ASTM D822: No film failure and 88 percent

gloss retention after 1 year exposure in South Florida with test panels tilted at 45 degrees.

C. Color: Selected by Architect from manufacturer's standard range PART 3 - EXECUTION 3.1 PREPARATION A. Prior to fabrication, field verify required dimensions. B. Cast concrete footings in accordance with Section 03 30 00 - Cast-in-Place Concrete as

detailed on Drawings and approved shop drawings. 3.2 INSTALLATION A. Install fencing in accordance with manufacturer's installation instructions and approved shop

drawings.



B. Install fence posts plumb and level [by setting post in hole [cast] [drilled] in concrete and grouting solid.] [by embedding post directly in concrete footing.] Temporarily brace fence posts with 2 by 4 wood supports until [concrete] [grout] is set.

C. Do not installed bent, bowed, or otherwise damaged panels. Remove damaged

components from site and replace. D. Secure fence panels with standard stainless steel bolts. E. Gates: 1. Install gates and adjust hardware for smooth operation. 2. Provide concrete center foundation depth and drop rod retainers at center of double

swinging gate openings. 3. After installation, test gate. Open and close a minimum of five times. Correct

deficiencies and adjust. F. Touch-up damaged finish with paint supplied by manufacturer and matching original coating. END OF SECTION 08 91 00

SECTION 10 21 23 – CUBICLES

ETB #1002 10 21 23 - 1 New River Headquarter Building & HEPC Allied Health Center

WV-CTCS

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes the following:

1. Curtain tracks and curtain carriers. 2. Cubicle curtains.

B. Related Sections include the following: 1. Division 09 Section " Acoustical Panel Ceilings" for metal framing and furring for mounting items requiring

anchorage.

1.2 PERFORMANCE REQUIREMENTS

A. Curtains: Provide curtain fabrics with the following characteristics:

1. Fabrics are launderable to a temperature of not less than 90 deg F. 2. Fabrics are flame resistant and are identical to those that have passed NFPA 701 when tested by a testing

and inspecting agency acceptable to authorities having jurisdiction.

a. Identify fabrics with appropriate markings of applicable testing and inspecting agency.

1.3 SUBMITTALS

A. Product Data: Include durability, laundry temperature limits, fade resistance, and fire-test-response characteristics for each type of curtain fabric indicated.

1. Include data on each type of applied curtain treatment.

B. Shop Drawings: Show layout and types of cubicles, sizes of curtains, number of carriers, anchorage details, and conditions requiring accessories. Indicate dimensions taken from field measurements.

1. Include details on blocking above ceiling.

C. Coordination Drawings: Reflected ceiling plans, drawn to scale, on which the following items are shown and coordinated with each other, based on input from installers of the items involved:

1. Suspended ceiling components. 2. Structural members to which suspension systems will be attached. 3. Items penetrating finished ceiling, including the following:

a. Lighting fixtures. b. Air outlets and inlets. c. Speakers. d. Sprinklers. e. Access panels.

D. Samples for Initial Selection: For each type of curtain material indicated.

E. Curtain and Track Schedule: Use same designations indicated on Drawings.

F. Manufacturer Certificates: Signed by manufacturers certifying that products comply with requirements.

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G. Operation and Maintenance Data: For curtains, track, and hardware to include in operation and maintenance manuals.

1.4 QUALITY ASSURANCE

A. Mockups: Build mockups to verify selections made under sample submittals and to demonstrate aesthetic effects and set quality standards for materials and execution.

1. Build mockup of typical cubicle, complete with track, curtain, as shown on Drawings.

a. Approval of mockups does not constitute approval of deviations from the Contract Documents contained in mockups unless such deviations are specifically approved by Architect in writing.

b. Approved mockups may become part of the completed Work if undisturbed at time of Substantial Completion.

1.5 PROJECT CONDITIONS

A. Environmental Limitations: Do not install cubicles until spaces are enclosed and weatherproof, wet work in spaces is complete and dry, work above ceilings is complete, and ambient temperature and humidity conditions are maintained at the levels indicated for Project when occupied for its intended use.

PART 2 - PRODUCTS

2.1 CURTAIN TRACKS

A. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

1. ADC Hospital Equipment; Division of Automatic Devices Company. 2. Alderman Acres Mfg, Inc. 3. Barjan Manufacturing Ltd. 4. Covoc Corporation. 5. Cubicle Curtain Factory, Inc. 6. Diamond Drapery Co. 7. Imperial Fastener Company, Inc. 8. InPro Corporation. 9. Nelson, A. R. Co. 10. Pryor Products. 11. Salsbury Industries.

B. Extruded-Aluminum Track: Not less than 1-1/4 inches wide by 3/4 inch high; with minimum wall thickness of 0.058 inch.

1. Curved Track: Factory-fabricated, 24 inch radius bends. 2. Finish: Baked enamel, acrylic, or epoxy.

C. Track Accessories: Fabricate splices, end caps, connectors, end stops, coupling and joining sleeves, wall flanges, brackets, ceiling clips, and other accessories from same material and with same finish as track.

D. Curtain Carriers: Two nylon rollers and nylon axle with aluminum hook.

E. Exposed Fasteners: Stainless steel.

F. Concealed Fasteners: Hot-dip galvanized.

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2.2 CURTAINS

A. Manufacturers: Subject to compliance with requirements, provide products by one of the following:

1. ADC Hospital Equipment; Division of Automatic Devices Company. 2. Alderman Acres Mfg, Inc. 3. Barjan Manufacturing Ltd. 4. Covoc Corporation. 5. Cubicle Curtain Factory, Inc. 6. Diamond Drapery Co. 7. Imperial Fastener Company, Inc. 8. InPro Corporation. 9. Nelson, A. R. Co. 10. Pryor Products. 11. Salsbury Industries.

B. Cubicle Curtain Fabric: Curtain manufacturer's standard, 100 percent polyester, inherently and permanently flame resistant, stain resistant, and antimicrobial. 1. Color and Pattern: As selected by Architect from manufacturer’s full range.

C. Curtain Grommets: Two-piece, rolled-edge, rustproof, nickel-plated brass; spaced not more than 6 inches (152 mm) o.c.; machined into top hem.

D. Mesh Top: No. 50 nylon mesh.

2.3 CURTAIN FABRICATION

A. Fabricate curtains to comply with the following requirements:

1. Width: Equal to track length from which curtain is hung plus 10 percent added fullness, but not less than 12 inches (305 mm) added fullness.

2. Length: Equal to floor-to-ceiling height, with 20-inch (508-mm) mesh top, and minus distance above the finished floor at bottom as follows:

a. Cubicle Curtains: 12 inches.

3. Top Hem: Not less than 1 inch (25.4 mm) and not more than 1-1/2 inches (38 mm) wide, triple thickness, reinforced with integral web, and double lock stitched.

4. Mesh Top: Top hem not less than 1 inch (25.4 mm) and not more than 1-1/2 inches (38 mm) wide, triple thickness, reinforced with integral web, and double lock stitched. Double lock stitch bottom of mesh directly to 1/2-inch (13-mm) triple thickness, top hem of curtain fabric.

5. Bottom Hem: Not less than 1 inch (25.4 mm) and not more than 1-1/2 inches (38 mm) wide, double thickness and double lock stitched.

6. Side Hems: Not less than 1/2 inch (13 mm) and not more than 1-1/4 inches (32 mm) wide, with double turned edges, and single lock stitched.

B. Vertical Seams: Not less than 1/2 inch (13 mm) wide, double turned and double stitched.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine substrates and conditions, with Installer present, for compliance with requirements for installation tolerances, and other conditions affecting performance of work.

1. Proceed with installation only after unsatisfactory conditions have been corrected.

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3.2 INSTALLATION

A. General: Install tracks level and plumb, according to manufacturer's written instructions.

B. Up to 16 feet in length, provide track fabricated from 1 continuous length.

1. Curtain Track Mounting: Surface.

C. Surface Track Mounting: Fasten surface-mounted tracks at intervals of not less than 24 inches (610 mm). Fasten support at each splice and tangent point of each corner. Center fasteners in track to ensure unencumbered carrier operation. Attach track to ceiling as follows: 1. Attach track to suspended ceiling grid with manufacturer's proprietary clip.

D. Suspended Track Mounting: Install track with suspended supports at intervals of not more than 48 inches (1219 mm). Fasten support at each splice and tangent point of each corner. Secure ends of track to wall with flanged fittings or brackets.

E. Track Accessories: Install splices, end caps, connectors, end stops, coupling and joining sleeves, and other accessories as required for a secure and operational installation.

F. Curtain Carriers: Provide curtain carriers adequate for 6-inch (152-mm) spacing along full length of curtain plus an additional carrier.

G. Curtains: Hang curtains on each curtain track.

END OF SECTION

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SECTION 07 27 26 – FLUID-APPLIED MEMBRANE AIR BARRIERS

©MBAJ ARCHITECTURE #1007 / ETB #0905 07 27 26 - 1 Advantage Valley Advanced Technology Center WV-CTCS

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes the following:

1. Fluid-applied membrane air barrier, vapor retarding.

B. Related Sections include the following: 1. Division 04 Section "Unit Masonry" for embedded flashings. 2. Division 07 Section "Thermal Insulation" for foam-plastic board insulation. 3. Division 07 Section "Sheet Metal Flashing and Trim" for sheet metal flashings. 4. Division 07 Section "Joint Sealants" for joint-sealant materials and installation.

1.2 DEFINITIONS

A. ABAA: Air Barrier Association of America.

B. Air Barrier Assembly: The collection of air barrier materials and auxiliary materials applied to an opaque wall, including joints and junctions to abutting construction, to control air movement through the wall.

1.3 PERFORMANCE REQUIREMENTS

A. General: Air barrier shall be capable of performing as a continuous vapor-retarding air barrier and as a liquid-water drainage plane flashed to discharge to the exterior incidental condensation or water penetration. Air barrier assemblies shall be capable of accommodating substrate movement and of sealing substrate expansion and control joints, construction material changes, and transitions at perimeter conditions without deterioration and air leakage exceeding specified limits.

1.4 SUBMITTALS

A. Product Data: Include manufacturer's written instructions for evaluating, preparing, and treating substrate; technical data; and tested physical and performance properties of air barrier.

B. Shop Drawings: Show locations and extent of air barrier. Include details for substrate joints and cracks, counterflashing strip, penetrations, inside and outside corners, terminations, and tie-ins with adjoining construction.

1. Include details of interfaces with other materials that form part of air barrier. 2. Include details of mockups.

C. Product Certificates: For air barriers, certifying compatibility of air barrier and accessory materials with Project materials that connect to or that come in contact with the barrier; signed by product manufacturer.

D. Qualification Data: For Applicator.

E. Product Test Reports: Based on evaluation of comprehensive tests performed by a qualified testing agency, for air barriers.

1.5 QUALITY ASSURANCE

A. Applicator Qualifications: A firm experienced in applying air barrier materials similar in material, design, and extent to those indicated for this Project, whose work has resulted in applications with a record of successful in-

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service performance and that is an ABAA-licensed contractor, employs certified and registered installers, and complies with ABAA's Quality Assurance Program.

B. Mockups: Before beginning installation of air barrier, build mockups of exterior wall assembly as indicated in Division 04, Section “Unit Masonry”, incorporating backup wall construction, external cladding, window, door frame and sill, insulation, and flashing to demonstrate surface preparation, crack and joint treatment, and sealing of gaps, terminations, and penetrations of air barrier membrane.

C. Preinstallation Conference: Conduct conference at Project site.

1. Include installers of other construction connecting to air barrier, including roofing, waterproofing, architectural precast concrete, masonry, sealants, windows, glazed curtain walls, and door frames.

2. Review air barrier requirements including surface preparation, substrate condition and pretreatment, minimum substrate curing period, forecasted weather conditions, special details and sheet flashings, mockups, installation procedures, sequence of installation, testing and inspecting procedures, and protection and repairs.

1.6 DELIVERY, STORAGE, AND HANDLING

A. Store liquid materials in their original undamaged packages in a clean, dry, protected location and within temperature range required by air barrier manufacturer.

B. Remove and replace liquid materials that cannot be applied within their stated shelf life.

C. Store rolls according to manufacturer's written instructions.

D. Protect stored materials from direct sunlight.

1.7 PROJECT CONDITIONS

A. Environmental Limitations: Apply air barrier within the range of ambient and substrate temperatures recommended by air barrier manufacturer. Protect substrates from environmental conditions that affect performance of air barrier. Do not apply air barrier to a damp or wet substrate or during snow, rain, fog, or mist.

PART 2 - PRODUCTS

2.1 FLUID-APPLIED MEMBRANE AIR BARRIER

A. Fluid-Applied, Vapor-Retarding Membrane Air Barrier: Elastomeric, modified bituminous membrane.

1. Available Products: Subject to compliance with requirements, products that may be incorporated into the Work include, but are not limited to, the following:

a. Elastomeric Modified Bituminous Membrane:

1) Carlisle Coatings & Waterproofing; Barriseal. 2) Henry Company; Air-Bloc 06. 3) Meadows, W. R., Inc.; Air-Shield LM. 4) Tremco Incorporated; ExoAir 120.

2. Physical and Performance Properties:

a. Membrane Air Permeance: Not to exceed 0.004 cfm x sq. ft. of surface area at 1.57-lbf/sq. ft. pressure difference; ASTM E 2178.

b. Membrane Vapor Permeance: Not to exceed 0.1 perm; ASTM E 96.

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2.2 AUXILIARY MATERIALS

A. General: Auxiliary materials recommended by air barrier manufacturer for intended use and compatible with air barrier membrane. Liquid-type auxiliary materials shall comply with VOC limits of authorities having jurisdiction.

B. Primer: Liquid waterborne primer recommended for substrate by manufacturer of air barrier material.

C. Joint Reinforcing Strip: Air barrier manufacturer's glass-fiber-mesh tape.

D. Substrate Patching Membrane: Manufacturer's standard trowel-grade substrate filler.

E. Adhesive and Tape: Air barrier manufacturer's standard adhesive and pressure-sensitive adhesive tape.

F. Sprayed Polyurethane Foam Sealant: 1- or 2-component, foamed-in-place, polyurethane foam sealant, 1.5 to 2.0 lb/cu. ft density; flame spread index of 25 or less according to ASTM E 162; with primer and noncorrosive substrate cleaner recommended by foam sealant manufacturer.

G. Modified Bituminous Transition Strip: Vapor-retarding, 40-mil- thick, smooth-surfaced, self-adhering; consisting of 36 mils of rubberized asphalt laminated to a 4-mil- thick polyethylene film with release liner backing.

H. Joint Sealant: ASTM C 920, single-component, neutral-curing silicone; Class 100/50 (low-modulus), Grade NS, Use NT related to exposure, and, as applicable to joint substrates indicated, Use O. Comply with Division 07 Section "Joint Sealants."

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine substrates, areas, and conditions, with Installer present, for compliance with requirements and other conditions affecting performance.

1. Verify that substrates are sound and free of oil, grease, dirt, excess mortar, or other contaminants. 2. Verify that concrete has cured and aged for minimum time period recommended by air barrier

manufacturer. 3. Verify that masonry joints are flush and completely filled with mortar. 4. Proceed with installation only after unsatisfactory conditions have been corrected.

3.2 SURFACE PREPARATION

A. Clean, prepare, treat, and seal substrate according to manufacturer's written instructions. Provide clean, dust-free, and dry substrate for air barrier application.

B. Mask off adjoining surfaces not covered by air barrier to prevent spillage and overspray affecting other construction.

C. Remove grease, oil, bitumen, form-release agents, paints, curing compounds, and other penetrating contaminants or film-forming coatings from concrete.

D. Remove fins, ridges, mortar, and other projections and fill honeycomb, aggregate pockets, holes, and other voids in concrete with substrate patching membrane.

E. Remove excess mortar from masonry ties, shelf angles, and other obstructions.

F. At changes in substrate plane, apply sealant or termination mastic beads at sharp corners and edges to form a smooth transition from one plane to another.

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G. Cover gaps in substrate plane and form a smooth transition from one substrate plane to another with stainless-steel sheet mechanically fastened to structural framing to provide continuous support for air barrier.

3.3 JOINT TREATMENT

A. Concrete and Masonry: Prepare, treat, rout, and fill joints and cracks in substrate according to ASTM C 1193 and air barrier manufacturer's written instructions. Remove dust and dirt from joints and cracks complying with ASTM D 4258 before coating surfaces.

1. Prime substrate and apply a single thickness of preparation coat strip extending a minimum of 3 inches along each side of joints and cracks. Apply a double thickness of air barrier membrane and embed a joint reinforcing strip in preparation coat.

B. Gypsum Sheathing: Fill joints greater than 1/4 inch with sealant according to ASTM C 1193 and with air barrier manufacturer's written instructions. Apply first layer of fluid air barrier membrane at joints. Tape joints with joint reinforcing strip after first layer is dry. Apply a second layer of fluid air barrier membrane over joint reinforcing strip.

3.4 TRANSITION STRIP INSTALLATION

A. Install strips, transition strips, and auxiliary materials according to air barrier manufacturer's written instructions to form a seal with adjacent construction and maintain a continuous air barrier.

B. Apply primer to substrates at required rate and allow to dry. Limit priming to areas that will be covered by air barrier sheet in same day. Reprime areas exposed for more than 24 hours.

1. Prime glass-fiber-surfaced gypsum sheathing with number of prime coats needed to achieve required bond, with adequate drying time between coats.

C. At end of each working day, seal top edge of strips and transition strips to substrate with termination mastic.

D. Apply joint sealants forming part of air barrier assembly within manufacturer's recommended application temperature ranges. Consult manufacturer when sealant cannot be applied within these temperature ranges.

E. Wall Openings: Prime concealed perimeter frame surfaces of windows, curtain walls, storefronts, and doors. Apply modified bituminous transition strip so that a minimum of 3 inches of coverage is achieved over both substrates. Maintain 3 inches of full contact over firm bearing to perimeter frames with not less than 1 inch of full contact.

1. Modified Bituminous Transition Strip: Roll firmly to enhance adhesion.

F. Fill gaps in perimeter frame surfaces of windows, curtain walls, storefronts, and doors, and miscellaneous penetrations of air barrier membrane with foam sealant.

G. Seal strips and transition strips around masonry reinforcing or ties and penetrations with termination mastic.

H. Seal top of through-wall flashings to air barrier with an additional 6-inch- wide, modified bituminous strip.

I. Seal exposed edges of strips at seams, cuts, penetrations, and terminations not concealed by metal counterflashings or ending in reglets with termination mastic.

J. Repair punctures, voids, and deficient lapped seams in strips and transition strips. Slit and flatten fishmouths and blisters. Patch with transition strips extending 6 inches beyond repaired areas in strip direction.

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3.5 AIR BARRIER MEMBRANE INSTALLATION

A. Apply air barrier membrane to form a seal with strips and transition strips and to achieve a continuous air barrier according to air barrier manufacturer's written instructions.

B. Apply air barrier membrane within manufacturer's recommended application temperature ranges.

C. Apply primer to substrates at required rate and allow to dry. Limit priming to areas that will be covered by air barrier sheet in same day. Reprime areas exposed for more than 24 hours.

1. Prime glass-fiber-surfaced gypsum sheathing with number of prime coats needed to achieve required bond, with adequate drying time between coats.

D. Apply a continuous unbroken air barrier to substrates according to the following minimum thickness. Apply membrane in full contact around protrusions such as masonry ties.

1. Vapor-Retarding Membrane Air Barrier: 40-mil dry film thickness.

E. Apply strip and transition strip a minimum of 1 inch onto cured air membrane according to air barrier manufacturer's written instructions.

F. Do not cover air barrier until it has been tested and inspected by Owner's testing agency.

G. Correct deficiencies in or remove air barrier that does not comply with requirements; repair substrates and reapply air barrier components.

3.6 FIELD QUALITY CONTROL

A. Testing Agency: Owner will engage a qualified testing agency to perform tests and inspections and prepare test reports.

B. Inspections: Air barrier materials and installation are subject to inspection for compliance with requirements. Inspections may include the following:

1. Continuity of air barrier system has been achieved throughout the building envelope with no gaps or holes. 2. Continuous structural support of air barrier system has been provided. 3. Masonry and concrete surfaces are smooth, clean and free of cavities, protrusions, and mortar droppings. 4. Site conditions for application temperature and dryness of substrates have been maintained. 5. Maximum exposure time of materials to UV deterioration has not been exceeded. 6. Surfaces have been primed, if applicable. 7. Laps in strips and transition strips have complied with minimum requirements and have been shingled in

the correct direction (or mastic has been applied on exposed edges), with no fishmouths. 8. Termination mastic has been applied on cut edges. 9. Strips and transition strips have been firmly adhered to substrate. 10. Compatible materials have been used. 11. Transitions at changes in direction and structural support at gaps have been provided. 12. Connections between assemblies (membrane and sealants) have complied with requirements for

cleanliness, preparation and priming of surfaces, structural support, integrity, and continuity of seal. 13. All penetrations have been sealed.

C. Remove and replace deficient air barrier components and reinspect as specified above.

3.7 CLEANING AND PROTECTION

A. Protect air barrier system from damage during application and remainder of construction period, according to manufacturer's written instructions.

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1. Protect air barrier from exposure to UV light and harmful weather exposure as required by manufacturer. Remove and replace air barrier exposed for more than 30 days.

2. Protect air barrier from contact with creosote, uncured coal-tar products, TPO, EPDM, flexible PVC membranes, and sealants not approved by air barrier manufacturer.

B. Clean spills, stains, and soiling from construction that would be exposed in the completed work using cleaning agents and procedures recommended by manufacturer of affected construction.

C. Remove masking materials after installation.

END OF SECTION

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