Addendum 05-03.24.21.pdf

A/E Repair Exterior Walls and Replace Windows

Cincinnati VAMC – Project #539-20-103

Addendum No. 5

March 24, 2021

Addendum No. 5

A/E Repair Exterior Walls and Replace Windows

Cincinnati VAMC – Proj. #539-20-103

3200 Vine Street

Cincinnati, OH 45220

This Addendum supplements and amends the original Drawings and Specifications for the above referenced project. This Addendum shall be forwarded to all Prime Bidders and all appropriate building code authorities. This Addendum shall be taken into account in the preparation of bids and shall become a part of the Contract Documents.

Receipt of this Addendum must be acknowledged on the Bid Form.

This addendum consists of the following items:

Specifications

1. Section 028211 ASBESTOS ABATEMENT – Revise as follows:

a. 028211a Asbestos Survey – Terracon Consultants, Inc., dated June 24, 2020:

i. Appendix A: Page incorrectly rotated and cropped. Replace with complete page included herein.

2. Section 088000 GLAZING – Section Reissued. Revisions include the following:

a. Paragraph 1.4, C, 1 - Ballistic- and Blast- resistant glass assemblies:

i. Eliminate term “UFC 4-010-01”.

b. Paragraph 2.5, A – Security Glazing Assembly – Blast Resistance: Delete and replace text to read as follows:

“Blast Resistance: Provide exterior glazing units and interior security glazing units providing protection in compliance with the Physical Security Design

Manual for VA Mission Critical Facilities (2015), Section 6.2.2.”

c. Paragraph 3.9, A, 11 – Insulating Laminated Glass Schedule (Blast Resistant):

i. Eliminate Sub-Paragraphs A-11a, B-11a, and C-11a.

ii. Sub-Paragraphs A-11b, B-11b, and C-11b: Delete and replace text to read as follows:

“a. Glazing system shall meet the design requirements of Section 6.2.2 of the VA Physical Security Design Manual for Mission Critical Facilities (2015).

Drawings

3. Sheet S105 – Enlarged Façade Elevations – Revise sheet as follows:

a. South Elevation #2 (Facade “R”): Eliminate work items shown at 9th Floor.

Door, window, and louver openings were eliminated in a later building addition.

4. Sheet S200 – Masonry Details – Revise sheet as follows:

a. Detail #4 (Facade “R”): Revise Hex Note #1 to read “Existing Brick”.

End of Addendum No. 5

AE REPAIR EXTERIOR WALLS AND REPLACE WINDOWS GLAZING

VAMC CINCINNATI, OHIO

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SECTION 08 80 00

GLAZING

PART 1 - GENERAL

1.1 DESCRIPTION:

A. This section specifies the following:

1. Glass.

2. Glazing materials and accessories for factory glazed assemblies.

1.2 RELATED WORK:

A. Sustainable Design Requirements: Section 01 81 13, SUSTAINABLE CONSTRUCTION

REQUIREMENTS.

B. Factory glazed by manufacturer in following units:

1. Aluminum Windows: Section 08 51 13, ALUMINUM WINDOWS.

C. Decorative window film: Section 08 87 00, ARCHITECTURAL WINDOW FILMS.

1.3 LABELS:

A. Temporary labels:

1. Provide temporary label on each light of glass and plastic material identifying manufacturer or brand and glass type, quality and nominal thickness.

2. Label in accordance with NFRC label requirements.

3. Temporary labels are to remain intact until glass is approved by Contracting Officer

Representative (COR).

B. Permanent labels:

1. Locate in corner for each pane.

2. Label in accordance with ANSI Z97.1 and SGCC label requirements.

a. Tempered glass.

b. Laminated glass or have certificate for panes without permanent label.

c. Organic coated glass.

d. Identify each security glazing permanently with glazing manufacturer's name, date of manufacture, product number, and DOS Code number inconspicuously located in lower corner on protective side and visible after glazing is framed.

e. The "attack (threat) side" is to be identified in bold lettering on each side of glazing with removable label.

1.4 PERFORMANCE REQUIREMENTS:

A. General: Design glazing system consistent with guidance and practices presented in the GANA

Glazing Manual, GANA Laminated Glazing Manual, and GANA Sealant Manual, as applicable to project. Installed glazing is to withstand applied loads, thermal stresses, thermal movements, building movements, permitted tolerances, and combinations of these conditions without failure, including loss or glass breakage attributable to defective manufacture, fabrication, or installation;

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08 80 00 - 2 failure of sealants or gaskets to remain watertight and airtight; deterioration of glazing materials;

unsafe engagement of the framing system; deflections beyond specified limits; or other defects in construction.

B. Glazing Unit Design: Design glass, including engineering analysis meeting requirements of authorities having jurisdiction. Thicknesses listed are minimum. Coordinate thicknesses with framing system manufacturers.

1. Design glass in accordance with ASTM E1300, and for conditions beyond the scope of ASTM

E1300, by a properly substantiated structural analysis.

2. Design Wind Pressures: In accordance with the International Building Code .

3. Wind Design Data: In accordance with the International Building Code .

4. Maximum Lateral Deflection: For glass supported on all four edges, limit center-of-glass deflection at design wind pressure to not more than the structural capacity of the glazing unit, the threshold at which frame engagement is no longer safely assured, 1/100 times the short-side length, or19 mm (0.75 inch), whichever is less.

C. Ballistic- and Blast- resistant glass assemblies:

1. For blast-resistant and ballistic-resistant units comply with requirements in UFC 4-010-01, Physical Security Design Manual for VA Facilities, and project-specific criteria provided by

VA.

2. Tolerances:

a. Outside dimensions: Overall outside dimensions (height and width) of laminated security glazing is to maintain tolerance of ± 3 mm (+ 0.12 inch).

b. Warpage: Out-of-flat (warpage or bowing) condition of laminates is not to exceed 2.5 mm per lineal meter (0.10 inch per 3.3 lineal foot). The condition, if present, is to be localized to extent not greater than 0.75 mm (0.03 inch) for any 0.3 meter (0.98 feet) section.

1.5 SUBMITTALS:

A. In accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES.

B. Manufacturer's Certificates:

1. Certificate stating that fire-protection and fire-resistive glazing units meet code requirements for fire-resistance-rated assembly and applicable safety glazing requirements.

2. Certificate on solar heat gain coefficient when value is specified.

3. Certificate on "R" value when value is specified.

4. Certificate that blast resistant glass meets the specified requirements.

C. Manufacturer Warranty.

D. Manufacturer's Literature and Data:

1. Glass, each kind required.

2. Insulating glass units.

3. Glazing cushion.

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4. Sealing compound.

5. Blast resistive interlayer material.

E. Samples:

1. Size: 305 mm by 305 mm (12 inches by 12 inches).

2. Tinted glass.

3. Spandrel glass.

F. Preconstruction Adhesion and Compatibility Test Report: Submit glazing sealant manufacturer’s test report indicating glazing sealants were tested for adhesion to glass and glazing channel substrates and for compatibility with glass and other glazing materials.

1.6 DELIVERY, STORAGE AND HANDLING:

A. Delivery: Schedule delivery to coincide with glazing schedules so minimum handling of crates is required. Do not open crates except as required for inspection for shipping damage.

B. Storage: Store cases according to printed instructions on case, in areas least subject to traffic or falling objects. Keep storage area clean and dry.

C. Handling: Unpack cases following printed instructions on case. Stack individual windows on edge leaned slightly against upright supports with separators between each.

D. Protect laminated security glazing units against face and edge damage during entire sequence of fabrication, handling, and delivery to installation location. Provide protective covering on exposed faces of glazing panels, and mark inside as "INTERIOR FACE" or "PROTECTED FACE":

1.7 PROJECT CONDITIONS:

Field Measurements: Field measure openings before ordering tempered glass products to assure for proper fit of field measured products.

1.8 WARRANTY:

A. Construction Warranty: Comply with the FAR clause 52.246-21 “Warranty of Construction”.

B. Manufacturer Warranty: Manufacturer shall warranty their glazing from the date of installation and final acceptance by the Government as follows. Submit manufacturer warranty.

1. Insulating glass units to remain sealed for ten (10) years.

2. Laminated glass units to remain laminated for five (5) years.

1.9 APPLICABLE PUBLICATIONS:

A. Publications listed below form a part of this specification to extent referenced. Publications are referenced in text by basic designation only.

B. American Architectural Manufacturers Association (AAMA):

800 ............................................. Test Methods for Sealants

810.1-77 ..................................... Expanded Cellular Glazing Tape

C. American National Standards Institute (ANSI):

Z97.1-14 ..................................... Safety Glazing Material Used in Building - Safety Performance

Specifications and Methods of Test

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D. American Society of Civil Engineers (ASCE):

7-10 ............................................ Wind Load Provisions

E. ASTM International (ASTM):

C542-05(R2011) ........................ Lock-Strip Gaskets

C716-06 ..................................... Installing Lock-Strip Gaskets and Infill Glazing Materials

C794-10 ..................................... Adhesion-in-Peel of Elastomeric Joint Sealants

C864-05(R2011) ........................ Dense Elastomeric Compression Seal Gaskets, Setting Blocks, and Spacers

C920-14a ................................... Elastomeric Joint Sealants

C964-07(R2012) ........................ Standard Guide for Lock-Strip Gasket Glazing

C1036-11(R2012) ...................... Flat Glass

C1048-12 ................................... Heat-Treated Flat Glass-Kind HS, Kind FT Coated and Uncoated

Glass.

C1172-14 ................................... Laminated Architectural Flat Glass

C1376-10 ................................... Pyrolytic and Vacuum Deposition Coatings on Flat Glass

D4802-10 ................................... Poly (Methyl Methacrylate) Acrylic Plastic Sheet

E84-14 ........................................ Surface Burning Characteristics of Building Materials

E119-14 ...................................... Standard Test Methods for Fire Test of Building Construction and Material

E1300-12a .................................. Load Resistance of Glass in Buildings

E1886-13a .................................. Standard Test Method for Performance of Exterior Windows, Curtain Walls, Doors, and Impact Protective Systems Impacted by Missile(s) and Exposed to Cyclic Pressure Differentials

E2190-10 .................................... Insulating Glass Unit

F1233-08 .................................... Standard Test Method for Security Glazing Materials and

Systems

F1642-17 .................................... Test Method for Glazing and Glazing Systems Subject to Airblast

Loadings

F2912-17 .................................... Standard Specification for Glazing and Glazing Systems Subject to Airblast Loadings

F. Code of Federal Regulations (CFR):

16 CFR 1201-10 ......................... Safety Standard for Architectural Glazing Materials

G Glass Association of North America (GANA):

2010 Edition ............................... GANA Glazing Manual

2008 Edition ............................... GANA Sealant Manual

2009 Edition ............................... GANA Laminated Glazing Reference Manual

2010 Edition ............................... GANA Protective Glazing Reference Manual

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H International Code Council (ICC):

IBC ............................................. International Building Code

I Insulating Glass Certification Council (IGCC)

J Insulating Glass Manufacturer Alliance (IGMA):

TB-3001-13 ................................ Guidelines for Sloped Glazing

TM-3000 ..................................... North American Glazing Guidelines for Sealed Insulating Glass

Units for Commercial and Residential Use

K. Intertek Testing Services – Warnock Hersey (ITS-WHI)

L. National Fire Protection Association (NFPA):

80-16 .......................................... Fire Doors and Windows

252-12 ........................................ Fire Tests of Door Assemblies

257-12 ........................................ Standard on Fire Test for Window and Glass Block Assemblies

M. National Fenestration Rating Council (NFRC)

N. Safety Glazing Certification Council (SGCC) 2012:

Certified Products Directory (Issued Semi-Annually).

O. Underwriters Laboratories, Inc. (UL):

9-08(R2009) ............................... Fire Tests of Window Assemblies

263-14 ........................................ Fire Tests of Building Construction and Materials

752-11 ........................................ Bullet-Resisting Equipment.

P. Unified Facilities Criteria (UFC):

4-010-01-03(R2007) ................... DOD Minimum Antiterrorism Standards for Buildings

Q. U.S. Veterans Administration:

Physical Security Design Manual for VA Facilities (VAPSDG); Life Safety Protected

Physical Security Design Manual for VA Facilities (VAPSDG); Mission Critical Facilities

Architectural Design Manual for VA Facilities (VASDM)

R. Environmental Protection Agency (EPA):

40 CFR 59(2014) ....................... National Volatile Organic Compound Emission Standards for

Consumer and Commercial Products

PART 2 - PRODUCT

2.1 GLASS:

A. Provide minimum thickness stated and as additionally required to meet performance requirements.

1. Provide minimum 6 mm (1/4 inch) thick glass units unless otherwise indicated.

B. Obtain glass units from single source from single manufacturer for each glass type.

C. Clear Glass:

1. ASTM C1036, Type I, Class 1, Quality q3.

D. Tinted Heat reflective and low emissivity coated glass:

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1. ASTM C1036, Type I, Class 2, Quality q3.

2.2 HEAT-TREATED GLASS:

A. Clear Heat Strengthened Glass:

1. ASTM C1048, Kind HS, Condition A, Type I, Class 1, Quality q3.

B. Tinted Heat Strengthened Glass:

1. ASTM C1048, Kind HS, Condition A, Type I, Class 2, Quality q3.

C. Clear Tempered Glass:

1. ASTM C1048, Kind FT, Condition A, Type I, Class 1, Quality q3.

D. Tinted Tempered Glass.

1. ASTM C1048, Kind FT, Condition A, Type I, Class 2, Quality q3.

2.3 COATED GLASS:

A. Ceramic Enamel Frit Coated Spandrel Glass:

1. ASTM C1048, Kind HS or FT, Condition B (spandrel glass, one-surface ceramic coated), Type I, Quality q3 with ceramic coating applied over glass surface.

2. Pattern: 100% Opaque

2.4 LAMINATED GLASS:

A. Laminated Glass: ASTM C1172. Two or more lites of glass bonded with polyvinyl butyral, ionomeric polymer, or cast-in-place and cured-transparent-resin interlayer complying with interlayer manufacturer's written instructions.

B. Interlayer: Use min. 1.52 mm (0.060 inch) thick interlayer for vertical glazing unless otherwise scheduled.

C. Interlayer: Use 2.28 mm (0.090 inch) thick interlayer where required to meet performance requirements.

1. Mental/Behavioral Health safety glazing where indicated.

D. Interlayer Color: Clear.

2.5 SECURITY GLAZING ASSEMBLY:

A. Blast Resistance: Provide exterior glazing units and interior security glazing units providing protection in compliance with the Physical Security Design Manual for VA Mission Critical

Facilities (2015), Section 6.2.2. based upon hazard rating as scheduled, in accordance with

ASTM F1642, and peak pressure and positive phase impulse indicated.

B. Laminated Glass Security Glazing Units: Fabricate from multiple lites of scheduled glass with polyvinyl butyral, ionomeric polymer, or cast-in-place and cured-transparent resin interlayers between the layers of glazing.

2.6 INSULATING GLASS UNITS:

A. Provide factory fabricated, hermetically sealed glass unit consisting of two panes of glass separated by a dehydrated air space and comply with ASTM E2190.

B. Assemble units using glass types specified in Insulating Glass Schedule.

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2.7 GLAZING ACCESSORIES:

A. As required to supplement the accessories provided with the items to be glazed and to provide a complete installation. Ferrous metal accessories exposed in the finished work are to have a finish that will not corrode or stain while in service. Fire rated glazing to be installed with glazing accessories in accordance with the manufacturer’s installation instructions.

B. Setting Blocks: ASTM C864:

1. Silicone type.

2. Channel shape; having 6 mm (1/4 inch) internal depth.

3. Shore A hardness of 80 to 90 Durometer.

4. Block lengths: 50 mm (2 inches) except 100 to 150 mm (4 to 6 inches) for insulating glass.

5. Block width: Approximately 1.6 mm (1/16 inch) less than the full width of the rabbet.

6. Block thickness: Minimum 4.8 mm (3/16 inch). Thickness sized for rabbet depth as required.

C. Spacers: ASTM C864:

1. Channel shape having a 6 mm (1/4 inch) internal depth.

2. Flanges not less 2.4 mm (3/32 inch) thick and web 3 mm (1/8 inch) thick.

3. Lengths: 25 to 76 mm (1 to 3 inches).

4. Shore A hardness of 40 to 50 Durometer.

D. Glazing Tapes:

1. Semi-solid polymeric based closed cell material exhibiting pressure-sensitive adhesion and withstanding exposure to sunlight, moisture, heat, cold, and aging.

2. Shape, size and degree of softness and strength suitable for use in glazing application to prevent water infiltration.

3. Complying with AAMA 800 for the following types:

a. AAMA 810.1, Type 1, for glazing applications in which tape acts as the primary sealant.

b. AAMA 810.1, Type 2, for glazing applications in which tape is used in combination with a full bead of liquid sealant.

E. Glazing Gaskets: ASTM C864:

1. Firm dense wedge shape for locking in sash.

2. Soft, closed cell with locking key for sash key.

3. Flanges may terminate above the glazing-beads or terminate flush with top of beads.

F. Lock-Strip Glazing Gaskets: ASTM C542, shape, size, and mounting as indicated.

G. Glazing Sealants: ASTM C920, silicone neutral cure:

1. Type S.

2. Class 25 or 50 as recommended by manufacturer for application.

3. Grade NS.

4. Shore A hardness of 25 to 30 Durometer.

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5. VOC Content: For sealants used inside the weatherproofing system, not more than 250 g/L or less when calculating according to 40 CFR 59, (EPA Method 24).

H. Neoprene, EPDM, or Vinyl Glazing Gasket: ASTM C864.

1. Channel shape; flanges may terminate above the glazing channel or flush with the top of the channel.

2. Designed for dry glazing.

I. Color:

1. Color of glazing compounds, gaskets, and sealants used for aluminum color frames to match color of the finished aluminum and be nonstaining.

2. Color of other glazing compounds, gaskets, and sealants which will be exposed in the finished work and unpainted are to be black, gray, or neutral color.

PART 3 - EXECUTION

3.1 EXAMINATION:

A. Verification of Conditions:

1. Examine openings for glass and glazing units; determine they are proper size; plumb; square;

and level before installation is started.

2. Verify that glazing openings conform with details, dimensions and tolerances indicated on manufacturer is approved shop drawings.

B. Review for conditions which may adversely affect glass and glazing unit installation, prior to commencement of installation. Do not proceed with installation until unsatisfactory conditions have been corrected.

C. Verify that wash down of adjacent masonry is completed prior to erection of glass and glazing units.

3.2 PREPARATION:

A. For sealant glazing, prepare glazing surfaces in accordance with GANA Sealant Manual.

B. Determine glazing unit size and edge clearances by measuring the actual unit to receive the glazing.

C. Shop fabricate and cut glass with smooth, straight edges of full size required by openings to provide GANA recommended edge clearances.

D. Verify that components used are compatible.

E. Clean and dry glazing surfaces.

F. Prime surfaces scheduled to receive sealants, as determined by preconstruction sealant-substrate testing.

3.3 INSTALLATION – GENERAL:

A. Install in accordance with GANA Glazing Manual, GANA Sealant Manual, IGMA TB-3001, and

IGMA TM-3000 unless specified otherwise.

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B. Glaze in accordance with recommendations of glazing and framing manufacturers, and as required to meet the Performance Test Requirements specified in other applicable sections of specifications.

C. Set glazing without bending, twisting, or forcing of units.

D. Do not allow glass to rest on or contact any framing member.

E. Tempered Glass: Install with roller distortions in horizontal position unless otherwise directed.

F. Laminated Glass:

1. Tape edges to seal interlayer and protect from glazing sealants.

2. Do not use putty or glazing compounds.

G. Insulating Glass Units:

1. Glaze in compliance with glass manufacturer's written instructions.

2. When glazing gaskets are used, they are to be of sufficient size and depth to cover glass seal or metal channel frame completely.

3. Do not use putty or glazing compounds.

4. Do not grind, nip, cut, or otherwise alter edges and corners of fused glass units after shipping from factory.

5. Install with tape or gunnable sealant in wood sash.

3.4 INSTALLATION - INTERIOR WET/DRY METHOD (TAPE AND SEALANT):

A. Cut glazing tape to length and install against permanent stops, projecting 1.6 mm (1/16 inch) above sight line.

B. Place setting blocks at 1/3 points with edge block no more than 150 mm (6 inches) from corners.

C. Rest glazing on setting blocks and push against tape to ensure full contact at perimeter of pane or unit.

D. Install removable stops, spacer shims inserted between glazing and applied stops at 600 mm (24 inch) intervals, 6 mm (1/4 inch) below sight line.

E. Fill gaps between pane and applied stop with sealant to depth equal to bite on glazing, to uniform and level line. Sealant type is to be compatible with glazing tape.

F. Trim protruding tape edge.

3.5 REPLACEMENT AND CLEANING:

A. Clean new glass surfaces removing temporary labels, paint spots, and defacement after approval by COR.

B. Replace cracked, broken, and imperfect glass, or glass which has been installed improperly.

C. Leave glass, putty, and other setting material in clean, whole, and acceptable condition.

3.6 PROTECTION:

A. Protect finished surfaces from damage during erection, and after completion of work. Strippable plastic coatings on colored anodized finish are not acceptable.

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3.7 MONOLITHIC GLASS SCHEDULE:

A. Glass Type MG# 1: Clear fully tempered float glass.

1. Unit Thickness: 6 mm (0.23 inch).

2. Safety glazing label required.

3.8 LAMINATED GLASS SCHEDULE:

A. Glass Type LG# 1: Clear laminated glass with two (2) lites of fully tempered float glass.

1. Minimum Thickness of Each Glass Lite: 5 mm (0.19 inch).

2. Interlayer Thickness: 2.29 mm (0.090 inch).

3. Safety glazing label required.

4. Application: Interior glazing units in locked Psych/Behavioral Health patient units and security rooms per VAADM.

B. Glass Type LG# 2: Clear laminated glass with two (2) lites of fully tempered float glass.

1. Minimum Thickness of Each Glass Lite: 4 mm (0.16 inch).

2. Interlayer Thickness: 1.52 mm (0.060 inch).

3. Safety glazing label required.

4. Application: Interior glazing units in Security Bedrooms per VAADM.

3.9 INSULATING LAMINATED GLASS SCHEDULE (BLAST RESISTANT):

A. Glass Type IL# 1: Tinted, low-e coated insulating, blast-resistant laminated glass.

1. Overall Unit Thickness: 30 mm (1-1/4 inch).

2. Outdoor Lite: Tinted heat-strengthened float glass where required, and fully tempered float glass where indicated.

a. Minimum Thickness of Outdoor Lite: 6 mm (0.23 inch).

b. Tint Color: Gray to match existing (Solar Gray).

3. Interspace Content: 90% Argon .

4. Indoor Lite: Clear laminated glass with two lites of heat-strengthened float glass.

a. Minimum Thickness of Each Glass Lite: 5 mm (0.19 inch).

b. Interlayer Thickness: 1.52 mm (0.060 inch).

c. Secured in frame with structural silicone sealant.

5. Low-E Coating: Sputtered on second surface of Outdoor Lite.

6. Visible Light Transmittance: 35 percent minimum.

7. Solar Heat Gain Coefficient: 0.24 maximum.

8. Exterior Visible Reflectance: 6 percent minimum.

9. U-Value (Winter Nighttime): 0.24 Btu/ (Hr x Sqft x °F) maximum.

10. Safety glazing label required.

11. Blast Resistance: Provide units meeting the following:

a. ASTM F-1642/F2912 Hazard Rating: No Hazard; Hazard Level: H1

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08 80 00 - 11 b.a. Glazing system shall meet the design requirements of Section 6.2.2 of the VA Physical

Security Design Manual for Mission Critical Facilities (2015). a minimum Specification

Level Z1 (user-defined) with the following blast loads: P=(13.5 psi), I=(56 psi-msec) in accordance with ASTM F2912. Confirmation of compliance via calculation is acceptable.

B. Glass Type IL# 2: Tinted, Ceramic Enamel-coated, low-E coated, insulating blast-resistant laminated spandrel glass.

1. Overall Unit Thickness: 30 mm (1-1/4 inch).

2. Outdoor Lite: Tinted heat-strengthened float glass, except fully tempered float glass where indicated.

a. Minimum Thickness of Outdoor Lite: 6 mm (0.23 inch).

b. Tint Color: Gray to match existing (Solar gray).

3. Interspace Content: 90% Argon.

4. Indoor Lite: Clear laminated glass with two lites of heat-strengthened float glass.

a. Minimum Thickness of Each Glass Lite: 5 mm (0.19 inch).

b. Interlayer Thickness: 1.52 mm (0.060 inch).

c. Secured in frame with structural silicone sealant.

d. Ceramic Enamel Frit Coating

1) Location: #6 surface

2) Coating Color: Black

5. Low-E Coating: Sputtered on second surface of Outdoor Lite.

6. Outdoor Visible Reflectance: 5 percent maximum.

7. Visible Light Transmittance: 0 percent minimum.

8. Solar Heat Gain Coefficient: 0.22 maximum.

9. U-Value (Winter Nighttime): 0.24 Btu/ (Hr x Sqft x °F) maximum.

10. Safety glazing label required.

11. Blast Resistance: Provide units meeting the following:

a. ASTM F-1642/F2912 Hazard Rating: No Hazard; Hazard Level: H1

b. Glazing system shall meet the design requirements of Section 6.2.2 of the VA Physical

Security Design Manual for Mission Critical Facilities (2015). a minimum Specification

Level Z1 (user-defined) with the following blast loads: P=(13.5 psi), I=(56 psi-msec) in accordance with ASTM F2912. Confirmation of compliance via calculation is acceptable.

C. Glass Type IL# 3: Clear, low-e coated insulating, blast-resistant laminated glass.

1. Overall Unit Thickness: 30 mm (1-1/4 inch).

2. Outdoor Lite: Heat-strengthened float glass where required, and fully tempered float glass where indicated.

a. Minimum Thickness of Outdoor Lite: 6 mm (0.23 inch).

b. Color: Clear.

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3. Interspace Content: 90% Argon.

4. Indoor Lite: Clear laminated glass with two lites of heat-strengthened float glass.

a. Minimum Thickness of Each Glass Lite: 5 mm (0.19 inch).

b. Interlayer Thickness: 1.52 mm (0.060 inch).

c. Secured in frame with structural silicone sealant.

5. Low-E Coating: Sputtered on second surface of Outdoor Lite.

6. Visible Light Transmittance: 69 percent minimum.

7. Solar Heat Gain Coefficient: 0.38 maximum.

8. Exterior Visible Reflectance: 11 percent minimum.

9. U-Value (Winter Nighttime): 0.24 Btu/ (Hr x Sqft x °F) maximum.

10. Safety glazing label required.

11. Blast Resistance: Provide units meeting the following:

a. ASTM F-1642/F2912 Hazard Rating: No Hazard; Hazard Level: H1

b. Glazing system shall meet the design requirements of Section 6.2.2 of the VA Physical

Security Design Manual for Mission Critical Facilities (2015). a minimum Specification

Level Z1 (user-defined) with the following blast loads: P=(13.5 psi), I=(56 psi-msec) in accordance with ASTM F2912. Confirmation of compliance via calculation is acceptable.

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