J-14 Pre-Bid Addendum No 1_112624.pdf

ADD. NO. 1 PTFL 21 1010

PRE-BID ADDENDUM NO. 1

TO

CONTRACTING DOCUMENTS

FOR

PROJECT NAME REPAIR DORMITORY FOR B2621

AT

JOINT BASE MDL (MCGUIRE), NEW JERSEY

PROJECT NO.: PROJECT 21-1010 DATE: 26 NOVEMBER 2024

Add to paragraph 1.1 in SOW

H. Replace all broken window and frames. (see specifications attached)

I. Replace damaged steel post on exterior stairs (see photo attached)

These changes are an addition to the original statement of work (SOW). However, all requirements and instructions from the original SOW apply unless stated otherwise.

END OF PRE-BID ADDENDUM NO. 1

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DIVISION 8

DOORS AND WINDOWS

SECTION 08 51 13

ALUMINUM WINDOWS

PART 1 GENERAL

1.1 SUMMARY

A. This Section includes Heavy-Commercial Grade aluminum windows of the performance class indicated. Window types required include the following:

1. Sliding windows.

2. Fixed windows.

3. Projected windows.

B. Related Sections: The following sections contain requirements, which relate to this

Section:

1. Section 08 81 00 “Glazing” for glass and other panels to be glazed into aluminum windows.

2. Section 07 92 00 “Joint Sealants” for sealing of perimeter joints of aluminum windows.

1.2 DEFINITIONS

A. Combination Windows: Where 2 different types of operating sash or ventilators are included in the same window unit and share a common frame, the unit is considered a "combination window."

B. Performance class number, included as part of the window designation system, is the actual design pressure in pounds force per square foot (pascals) used to determine structural test pressure and water test pressure.

1. Structural test pressure, wind load test, is equivalent to 150 percent of the design pressure.

2. Water-leakage-resistance test pressure is equivalent to 15 percent of the design pressure with 2.86 lbf/sq. ft. (137 Pa) as a minimum for Residential, Commercial, and Heavy-Commercial Grade windows.

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1.3 REFERENCES

A. The publications listed below, current as of the date of this solicitation, form a part of this specification to the extent referenced. The publications are referred to in the text by basic designation only.

1. American Architectural Manufacturers Association (AAMA)

a. AAMA 101: Voluntary Specifications for Aluminum, Poly(Vinyl

Chloride) (PVC) and Wood Windows and Glass Doors

b. AAMA 1302.5: Voluntary Specifications for Forced-Entry Resistant

Aluminum Prime Windows

c. AAMA 1503.1: Voluntary Test Method for Thermal Transmittance and Condensation Resistance of Windows, Doors and Glazed Wall

Sections

d. AAMA 2605: Voluntary Specification, Performance Requirements and Test Procedures for Superior Performing Organic Coatings on

Aluminum Extrusions and Panels

2. American Society For Testing And Materials (ASTM)

a. ASTM A123/A123M: Standard Specification for Zinc (Hot-Dip

Galvanized) Coatings on Iron and Steel Products

b. ASTM B633: Standard Specification for Electrodeposited

Coatings of Zinc on Iron and Steel

c. ASTM C509: Standard Specification for Elastomeric Cellular

Preformed Gasket and Sealing Material

d. ASTM D2000: Standard Classification System for Rubber

Products in Automotive Applications

e. ASTM D2287: Standard Specification for Nonrigid Vinyl Chloride

Polymer and Copolymer Molding and Extrusion Compounds

f. ASTM E283: Standard Test Method for Determining Rate of Air

Leakage Through Exterior Windows, Curtain Walls, and Doors

Under Specified Pressure Differences Across the Specimen

g. ASTM E330: Standard Test Method for Structural Performance of

Exterior Windows, Doors, Skylights and Curtain Walls by Uniform

Static Air Pressure Difference

h. ASTM E331: Standard Test Method for Water Penetration of

Exterior Windows, Skylights, Doors, and Curtain Walls by Uniform

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i. ASTM E547: Standard Test Method for Water Penetration of

Exterior Windows, Skylights, Doors, and Curtain Walls by Cyclic

j. ASTM F1642: Standard Test Method for Glazing and Glazing

Systems Subject to Airblast Loadings

3. Federal Standards (FS)

a. FS RR-W-365: (Rev A) Wire Fabric (Insect Screening)

4. Unified Facilities Criteria (UFC)

a. UFC 4-010-01: DoD Minimum Antiterrorism Standards for

Buildings

1.4 PERFORMANCE REQUIREMENTS

A. General: Provide aluminum windows engineered, fabricated, and installed to withstand normal thermal movement, wind loading, and impact loading without failure, as demonstrated by testing manufacturer's standard window assemblies representing types, grades, classes, and sizes required for Project according to test methods indicated.

B. Test Criteria: Testing shall be performed by a qualified independent testing agency based on the following criteria:

1. Design wind load design pressure is 30 psf.

2. Test Procedures: Test window units according to ASTM E 283 for air infiltration, both ASTM E 331 and ASTM E 547 for water penetration, and

ASTM E 330 for structural performance.

C. Performance Requirements: Testing shall demonstrate compliance with requirements indicated in AAMA 101 for air infiltration, water penetration, and structural performance for type, grade, and performance class of window units required. Where required design pressure exceeds the minimum for the specified window grade, comply with requirements of AAMA 101, Section 3, "Optional Performance

Classes," for higher than minimum performance class.

1. Air-Infiltration Rate for Operating Units: Not more than 0.30 cfm/ft. of operable sash joint for an inward test pressure of 6.24 lbf/sq. ft. (299 Pa).

2. Air-Infiltration Rate for Fixed Windows: Not more than 0.06 cfm/ft. of area for an inward test pressure of 6.24 lbf/sq. ft. (299 Pa).

3. Water Penetration: No water penetration as defined in the test method at an inward test pressure of 15 percent of the design pressure.

4. Structural Performance: No failure or permanent deflection in excess of 0.2 percent of any member's span after removing the imposed load, for a positive

(inward) and negative (outward) test pressure of 75 lbf/sq. ft. for operable and fixed windows.

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5. Condensation Resistance: Where window units are indicated to be "thermally improved," provide units tested for thermal performance according to AAMA

1503.1 showing a condensation resistance factor (CRF) of 53 min for operable and fixed windows.

6. Thermal Transmittance: Provide window units with a U-value maximum of

0.55 Btu/sq. ft. x h x deg F at 15-mi./h (24-km/h) exterior wind velocity, when tested according to AAMA 1503.1 for operable and fixed windows with insulated glazing.

7. Forced-Entry Resistance: All windows shall conform to AAMA 1302.5.

8. Thermal Movements: Provide window units that allow thermal movement resulting from the following maximum change (range) in ambient temperature when engineering, fabricating, and installing aluminum windows to prevent buckling, opening of joints, and overstressing of components, connections, and other detrimental effects. Base engineering calculation on actual surface temperatures of materials due to solar heat gain and nighttime sky heat loss.

a. Temperature Change (Range): 120 deg F, ambient; 180 deg F, material surfaces.

9. Glazing and Glazing Systems Subjected to Airblast Loadings: The test specimen shall be tested in accordance with ASTM F 1642. The test specimen shall receive a minimum “Low Hazard” rating per ASTM F1642-

04, a “Performance Condition 3b” per GSA, and a “Low Level of Protection

“ per UFC 4-010.01.

1.5 SUBMITTALS

A. General: Submit each item in this Article according to the Conditions of the Contract and Division 1 Specification Sections.

B. Product Data for each type of window required, including the following:

1. Data on hardware, accessories, and finishes.

2. Recommendations for maintaining and cleaning exterior surfaces.

C. Shop Drawings showing fabrication and installation of each type of window required including information not fully detailed in manufacturer's standard Product Data and the following:

1. Layout and installation details, including anchors.

2. Elevations at 1/4 inch = 1 foot scale and typical window unit elevations at 3/4 inch = 1 foot scale.

3. Full-size section details of typical composite members, including reinforcement and stiffeners.

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4. Location of weep holes.

5. Panning details.

6. Hardware, including operators.

7. Glazing details.

8. Accessories.

D. Samples for Verification: The Contracting Officer’s Representative reserves the right to require additional samples that show fabrication techniques, workmanship, and design of hardware and accessories.

1.6 QUALITY ASSURANCE

A. Installer Qualifications: Engage an experienced Installer who has completed installation of aluminum windows similar in material, design, and extent to those required for this Project and with a record of successful in-service performance.

B. Single-Source Responsibility: Obtain aluminum windows from one source and by a single manufacturer.

C. Product Options: The Drawings indicate sizes, profiles, dimensional requirements, and aesthetic effects of aluminum windows and are based on the specific window types and models indicated. Other aluminum window manufacturers whose products have equal performance characteristics may be considered provided deviations in size, profile, and dimensions are minor and do not alter the aesthetic effect as judged solely by the Contracting Officer’s Representative.

1. Drawings are based on the following products by TRACO or approved equal:

a. Projected Windows: TR-3500 (AP-HC80).

b. Sliding Windows: TR-6800 (HS-AW50)

c. Fixed Windows: TR-7100 (F-AW80)

1.7 PROJECT CONDITIONS

A. Field Measurements: Check window openings by field measurements before fabrication and show recorded measurements on Shop Drawings. Coordinate fabrication schedule with construction progress to avoid delaying the Work.

1. Where field measurements cannot be made without delaying the Work, guarantee opening dimensions and proceed with fabricating aluminum windows without field measurements. Coordinate wall construction to ensure that actual opening dimensions correspond to guaranteed dimensions.

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1.8 WARRANTY

A. Special Warranty: Submit a written warranty signed by aluminum window manufacturer agreeing to repair or replace window components that fail in materials or workmanship within the specified warranty period. Failures include, but are not limited to, the following:

1. Structural failures including excessive deflection, water leakage, air infiltration, or condensation.

2. Faulty operation of sash and hardware.

3. Deterioration of metals, metal finishes, and other materials beyond normal weathering.

B. Warranty Period: 3 years after date of Substantial Completion.

C. Warranty Period for Metal Finishes and Glass: 10 years after date of Substantial

Completion.

PART 2 PRODUCTS

2.1 MANUFACTURERS

A. Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated in the Work include, but are not limited to, the following:

1. Projected Windows, Fixed Windows, and Sliding Windows:

a. TRACO Series TR-3500, TR-7100, and TR-6800

b. Or Approved Equal.

2.2 MATERIALS

A. Aluminum Extrusions: Provide alloy and temper recommended by manufacturer for strength, corrosion resistance, and application of required finish, but not less than

22,000-psi (150-MPa) ultimate tensile strength and not less than 0.125 inch thick at any location for main frame and sash members.

1. Vision glass light must maintain glass line offset - glazing is not acceptable.

B. Fasteners: Provide aluminum, nonmagnetic stainless steel, epoxy adhesive, or other materials warranted by manufacturer to be noncorrosive and compatible with aluminum window members, trim, hardware, anchors, and other components of window units.

1. Reinforcement: Where fasteners screw anchor into aluminum less than 0.125 inch (3.2 mm) thick, reinforce interior with aluminum or nonmagnetic stainless steel to receive screw threads or provide standard, noncorrosive, pressed-in, splined grommet nuts.

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2. Exposed Fasteners: Except where unavoidable for application of hardware, do not use exposed fasteners. For application of hardware, use fasteners that match finish of member or hardware being fastened, as appropriate.

C. Anchors, Clips, and Window Accessories: Fabricate anchors, clips, and window accessories of aluminum, nonmagnetic stainless steel, or hot-dip zinc-coated steel or iron complying with requirements of ASTM B 633; provide sufficient strength to withstand design pressure indicated.

D. Compression-Type Glazing Strips and Weatherstripping: Unless otherwise indicated, and at manufacturer's option, provide compressible stripping for glazing and weatherstripping such as molded EPDM or neoprene gaskets complying with ASTM

D 2000 Designation 2BC415 to 3BC620, or molded PVC gaskets complying with

ASTM D 2287, or molded expanded EPDM or neoprene gaskets complying with

ASTM C 509, Grade 4.

E. Sealant: For sealants required within fabricated window units, provide type recommended by manufacturer for joint size and movement. Sealant shall remain permanently elastic, nonshrinking, and nonmigrating. Comply with Section 07901

"Joint Sealants" of these Specifications for selection and installation of sealants.

F. Wire-Fabric Insect Screen: 18-by-18 (1.1.-by-1.1-mm), 18-by-16 (1.1-by-1.3-mm), or 18-by-14 (1.1-by-1.5-mm) mesh of 0.013-inch- (0.3-mm-) diameter, coated aluminum wire, complying with FS RR-W-365, Type VII.

G. Concealed Flashing: 0.0179-inch (26 gage) minimum dead-soft stainless steel, or

0.026-inch-thick minimum extruded aluminum of alloy and type selected by manufacturer for compatibility with other components.

H. Concrete and Masonry Inserts: Provide cast iron, malleable iron, or hot-dip galvanized steel inserts complying with ASTM A 123.

2.3 HARDWARE

A. General: Provide manufacturer's standard hardware fabricated from aluminum, stainless steel, or other corrosion-resistant material compatible with aluminum and of sufficient strength to perform the function for which it is intended.

2.4 ACCESSORIES

A. General: Provide manufacturer's standard accessories that comply with indicated standards.

B Weatherstripping: Provide sliding-type weatherstripping where sash rails slide horizontally or vertically along unit frame. Provide compression-type weatherstripping at perimeter of each operating sash where sliding type is inappropriate. Provide double row sweep type weatherstripping at perimeter of each operating sash at vertically pivoted (reversible) windows.

1. Provide weatherstripping locked into extruded grooves in sash.

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C. Insect Screens: Provide insect screens for each operable exterior sash. Locate screens on inside or outside of window sash, depending on window type. Design windows and hardware to accommodate screens in a tight-fitting, removable arrangement, with a minimum of exposed fasteners and latches.

1. Wickets: Provide sliding or hinged-type wickets, framed and trimmed for a tight fit and durability during handling.

2. Screen Frames: Fabricate frames of tubular-shaped, extruded- or formed-aluminum members of 0.040-inch- (1-mm-) minimum wall thickness, with mitered or coped joints and concealed mechanical fasteners. Finish frames to match window units.

2.5 PROJECTED WINDOWS

A. Window Grade and Class: Comply with requirements of AAMA Grade and

Performance Class AP-HC80. Window units shall successfully pass the following test requirements as specified in AAMA 101: (Windows shall have 0.125 minimum wall thickness. The sash shall be full depth flush face design.)

1. Torsion test on an unglazed ventilator.

2. Horizontal and vertical concentrated load tests on latch rail of each ventilator.

3. Torsion load test on intermediate frame rails.

4. Vertical concentrated load test on intermediate frame rails over each ventilator.

5. Balance arm load test.

B. Hardware: Provide the following equipment and operating hardware:

1. Hinges: Concealed 4-bar friction hinges with adjustable slide shoe (2 per ventilator).

2. Lock: Cam-action, sweep lock handle with surface-mounted strike.

3. Limit Device: Stay bar with adjustable hold-open device.

2.6 FIXED WINDOWS

Performance Class F-AW80. Minimum 0.125 wall thickness; 3-1/4” frame depth.

2.7 HORIZONTAL – SLIDING WINDOWS

Performance Class HS-AW50. Minimum 0.125 wall thickness; 3-1/4” frame depth.

1. Sash Rollers: Two nylon wheel housings per sash with one ball bearing plated stainless steel wheel per housing.

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2. Sash lock cam-action sweep sash lock and keeper at meeting rails.

2.8 FABRICATION - WINDOWS

A. General: Fabricate aluminum window units to comply with indicated standards.

Include a complete system for assembly of components and anchorage of window units.

1. Provide units that are reglazable without dismantling sash or ventilator framing.

2. Prepare window sash or ventilators for glazing, except where preglazing at the factory is indicated.

B. Thermally Improved Construction: Fabricate window units with an integral, concealed, low-conductance, thermal barrier, located between exterior materials and window members exposed on interior, in a manner that eliminates direct metal-to-metal contact.

1. Provide thermal-break construction that has been in use for not less than 3 years, has been tested to demonstrate resistance to thermal conductance and condensation, and has been tested to show adequate strength and security of glass retention.

C. Weep Holes: Provide weep holes and internal passages to conduct infiltrating water to exterior.

D. Subframes: Provide subframes with anchors for window units as shown, of profile and dimensions indicated but not less than 0.062-inch- (1.6-mm-) thick extruded aluminum. Miter or cope corners, and weld and dress smooth with concealed mechanical joint fasteners. Finish to match window units.

E. Mullions: Provide mullions and cover plates as shown, matching window units, complete with anchors for support to structure and installation of window units.

Allow for erection tolerances and provide for movement of window units due to thermal expansion and building deflections, as indicated.

F. Glazing Stops: Provide screw-applied or snap-on glazing stops, coordinated with glass selection and glazing system indicated. Finish to match window units.

G. Preglazed Fabrication: Preglaze window units at the factory where possible and practical for applications indicated. Comply with glass and glazing requirements of

Section 08800 "Glazing" of these Specifications and AAMA 101.

2.9 FINISHES

A. Comply with NAAMM "Metal Finishes Manual" for recommendations relative to applying and designating finishes.

B. Finish designations prefixed by AA conform to the system established by the

Aluminum Association for designating aluminum finishes.

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C. High-Performance Organic Finish (3-Coat Fluoropolymer): AA-C12C40R1x

(Chemical Finish: cleaned with inhibited chemicals; Chemical Finish: conversion coatings; Organic Coating: manufacturer's standard 3-coat, thermocured system consisting of specially formulated inhibitive primer, fluoropolymer color coat, and clear fluoropolymer topcoat, with both color coat and clear topcoat containing not less than 70 percent polyvinylidene fluoride resin by weight). Prepare, pretreat, and apply coating to exposed metal surfaces to comply with AAMA 2605 and with coating and resin manufacturers' written instructions.

1. Color and Gloss: Federal Spec #595 – Color #20040 Dark Brown.

PART 3 EXECUTION

3.1 INSPECTION

A. Inspect openings before installation. Verify that rough or masonry opening is correct and sill plate is level.

1. Masonry surfaces shall be visibly dry and free of excess mortar, sand, and other construction debris.

2. Metal surfaces shall be dry; clean; free of grease, oil, dirt, rust and corrosion, and welding slag; without sharp edges or offsets at joints.

3.2 INSTALLATION

A. Comply with manufacturer's specifications and recommendations for installing window units, hardware, operators, and other components of the Work.

B. Set window units plumb, level, and true to line, without warp or rack of frames or sash. Provide proper support and anchor securely in place.

1. Separate aluminum and other corrodible surfaces from sources of corrosion or electrolytic action at points of contact with other materials by complying with requirements specified under "Dissimilar Materials" Paragraph in appendix to AAMA 101.

C. Set sill members and other members in a bed of sealant or with joint fillers or gaskets, as shown on Shop Drawings, to provide weathertight construction. Refer to Section

07901 "Joint Sealants" for compounds, fillers, and gaskets to be installed concurrently with window units. Coordinate installation with wall flashings and other components of the Work.

1. Sealants, joint fillers, and gaskets to be installed after installation of window units are specified in Section 07901 “Joint Sealants”.

3.3 ADJUSTING

A. Adjust operating sash and hardware to provide a tight fit at contact points and at weatherstripping for smooth operation and a weathertight closure.

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3.4 CLEANING

A. Clean aluminum surfaces promptly after installing windows. Exercise care to avoid damage to protective coatings and finishes. Remove excess glazing and sealant compounds, dirt, and other substances. Lubricate hardware and other moving parts.

B. Clean glass of preglazed units promptly after installing windows. Comply with requirements of Section 08800 "Glazing" for cleaning and maintenance.

3.5 PROTECTION

A. Provide final protection and maintain conditions, in a manner acceptable to aluminum window manufacturer, that ensure window units are without damage or deterioration at the time of Substantial Completion.

END OF SECTION 08 51 13

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DIVISION 8

DOORS AND WINDOWS

SECTION 08 81 00

GLAZING

PART 1 GENERAL

1.1 SUMMARY

A. This Section includes glazing for the following products and applications, including those specified in other Sections where glazing requirements are specified by reference to this Section:

1. Windows.

2. Doors.

1.2 REFERENCES

A. The publications listed below, current as of the date of this solicitation, form a part of this specification to the extent referenced. The publications are referred to in the text by basic designation only.

1. American Society for Testing and Materials (ASTM)

a. ASTM C920 - Standard Specification for Elastomeric Joint Sealants

b. ASTM C1021 - Standard Practice for Laboratories Engaged in the

Testing of Building Sealants

c. ASTM C1036 - Standard Specification for Flat Glass

d. ASTM C1172 – Standard Specification for Laminated Architectural

Flat Glass

e. ASTM C1281 - Standard Specification for Preformed Tape Sealants for Glazing Applications

f. ASTM C1330 - Standard Specification for Cylindrical Sealant

Backing for Use with Cold Liquid Applied Sealants

g. ASTM E548 - Guide for General Criteria used for Evaluating

Laboratory Competence

h. ASTM E774 - Standard Specification for the Classification of the

Durability of Sealed Insulating Glass Units

i. ASTM E1300 - Standard Practice for Determining Load Resistance of Glass in Buildings

2. American Architectural Manufacturers Association (AAMA)

a. AAMA 800 - Voluntary Specification and Test Methods for Sealants

b. AAMS 806.3 – Voluntary Specification for Bonding-Type Back-

Bedding Glazing Tapes

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3. Glass Association of North America (GANA)

a. Glazing Manual

4. National Fenestration Rating Council (NFRC)

a. NFRC 100 - Procedure for Determining Fenestration Product U-

Factors

b. NFRC 200 - Procedure for Determining Fenestration Product Solar

Heat Gain Coefficient and Visible Transmittance at Normal

Incidence

c. NFRC 300 - Test Method for Determining the Solar Optical

Properties of Glazing Materials and Systems

5. Sealed Insulating Glass Manufacturers Association (SIGMA)

a. SIGMA TM-3000 - Vertical Glazing Guidelines

1.3 DEFINITIONS

A. Manufacturer: A firm that produces primary glass or fabricated glass as defined in referenced glazing publications.

B. Interspace: Space between lites of an insulating-glass unit that contains dehydrated air or a specified gas.

C. Deterioration of Coated Glass: Defects developed from normal use that are attributed to the manufacturing process and not to causes other than glass breakage and practices for maintaining and cleaning coated glass contrary to manufacturer's written instructions. Defects include peeling, cracking, and other indications of deterioration in metallic coating.

D. Deterioration of Insulating Glass: Failure of the hermetic seal under normal use that is attributed to the manufacturing process and not to causes other than glass breakage and practices for maintaining and cleaning insulating glass contrary to manufacturer's written instructions. Evidence of failure is the obstruction of vision by dust, moisture, or film on interior surfaces of glass.

E. Sealed Insulating glass surfaces:

1. Side 1 - Exterior surface of outer pane.

2. Side 2 - Interior surface of outer pane.

3. Side 3 - Interior surface of inner pane.

4. Side 4 - Exterior surface of interior pane.

1.4 PERFORMANCE REQUIREMENTS

A. General: Provide glazing systems capable of withstanding normal thermal movement and wind and impact loads (where applicable) without failure, including loss or glass breakage attributable to the following: defective manufacture, fabrication, and

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installation; failure of sealants or gaskets to remain watertight and airtight;

deterioration of glazing materials; or other defects in construction.

1. Glass Thicknesses: Select minimum glass thicknesses to comply with ASTM

E 1300, according to the following requirements:

a. Specified Design Wind Loads: 15 psf

b. Probability of Breakage for Vertical Glazing: 8 lites per 1000 for lites set vertically or not more than 15 degrees off vertical and under wind action.

1) Load Duration: 60 seconds or less.

c. Maximum Lateral Deflection: For the following types of glass supported on all four edges, provide thickness required that limits center deflection at design wind pressure to 1/50 times the short side length or 1 inch (25 mm), whichever is less.

1) For insulating glass.

d. Minimum Glass Thickness for Exterior Lites: Not less than 6 mm.

e. Thickness of Tinted and Heat-Absorbing Glass: Provide the same thickness for each tint color indicated throughout Project.

B. Thermal Movements: Provide glazing that allows for thermal movements resulting from the following maximum change (range) in ambient and surface temperatures acting on glass framing members and glazing components. Base engineering calculation on surface temperatures of materials due to both solar heat gain and nighttime-sky heat loss.

1. Temperature Change (Range): 120 deg F (67 deg C), ambient; 180 deg F

(100 deg C), material surfaces.

C. Thermal and Optical Performance Properties: Provide glass with performance properties specified based on manufacturer's published test data, as determined according to procedures indicated below:

1. For insulating-glass units, properties are based on units with lites 6 mm thick and a nominal 1/2-inch- (13-mm-) wide interspace.

2. Center-of-Glass U-Values: NFRC 100 methodology using LBL-35298

WINDOW 4.1 computer program, expressed as Btu/ sq. ft. x h x deg F (W/sq.

m x K).

3. Center-of-Glass Solar Heat Gain Coefficient: NFRC 200 methodology using

LBL-35298 WINDOW 4.1 computer program.

4. Solar Optical Properties: NFRC 300.

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1.5 SUBMITTALS

A. Product Data: For each glass product and glazing material indicated.

B. Glazing Schedule: Use same designations indicated on Drawings for glazed openings in preparing a schedule listing glass types and thicknesses for each size opening and location.

C. Warranties: Special warranties specified in this Section.

1.6 QUALITY ASSURANCE

A. Installer Qualifications: An experienced installer who has completed glazing similar in material, design, and extent to that indicated for Project and whose work has resulted in construction with a record of successful in-service performance.

B. Source Limitations for Clear Glass: Obtain clear float glass from one primary glass manufacturer.

C. Source Limitations for Glazing Accessories: Obtain glazing accessories from one source for each product and installation method indicated.

D. Glass Product Testing: Obtain glass test results for product test reports in

"Submittals" Article from a qualified testing agency based on testing glass products.

1. Glass Testing Agency Qualifications: An independent testing agency with the experience and capability to conduct the testing indicated, as documented according to ASTM E 548.

E. Elastomeric Glazing Sealant Product Testing: Obtain sealant test results for product test reports in "Submittals" Article from a qualified testing agency based on testing current sealant formulations within a 36-month period.

1. Sealant Testing Agency Qualifications: An independent testing agency qualified according to ASTM C 1021 to conduct the testing indicated, as documented according to ASTM E 548.

2. Test elastomeric glazing sealants for compliance with requirements specified by reference to ASTM C 920, and where applicable, to other standard test methods.

F. Preconstruction Adhesion and Compatibility Testing: Submit to elastomeric glazing sealant manufacturers, for testing indicated below, samples of each glass type, tape sealant, gasket, glazing accessory, and glass-framing member that will contact or affect elastomeric glazing sealants.

1. Use manufacturer's standard test methods to determine whether priming and other specific preparation techniques are required to obtain rapid, optimum adhesion of glazing sealants to glass, tape sealants, gaskets, and glazing channel substrates.

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a. Perform tests under normal environmental conditions replicating those that will exist during installation.

2. Submit not fewer than nine pieces of each type and finish of glass-framing members and each type, class, kind, condition, and form of glass (monolithic, laminated, and insulating units) as well as one sample of each glazing accessory (gaskets, tape sealants, setting blocks, and spacers).

3. Schedule sufficient time for testing and analyzing results to prevent delaying the Work.

4. For materials failing tests, obtain sealant manufacturer's written instructions for corrective measures, including the use of specially formulated primers.

5. Testing will not be required if elastomeric glazing sealant manufacturers submit data based on previous testing of current sealant products for adhesion to, and compatibility with, glazing materials matching those submitted.

6. Agency acceptable to authorities having jurisdiction.

G. Glazing Publications: Comply with published recommendations of glass product manufacturers and organizations below, unless more stringent requirements are indicated. Refer to these publications for glazing terms not otherwise defined in this

Section or in referenced standards.

1. GANA Publications: GANA'S “Glazing Manual” and GANA Laminated

Division’s “Laminated Glass Design Guide.”

2. SIGMA Publications: SIGMA TM-3000, "Vertical Glazing Guidelines,"

H. Insulating-Glass Certification Program: Permanently marked either on spacers or on at least one component lite of units with appropriate certification label of the following inspecting and testing agency:

1. Insulating Glass Certification Council.

1.7 DELIVERY, STORAGE, AND HANDLING

A. Protect glazing materials according to manufacturer's written instructions and as needed to prevent damage to glass and glazing materials from condensation, temperature changes, direct exposure to sun, or other causes.

1.8 PROJECT CONDITIONS

A. Environmental Limitations: Do not proceed with glazing when ambient and substrate temperature conditions are outside limits permitted by glazing material manufacturers and when glazing channel substrates are wet from rain, frost, condensation, or other causes.

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1.9 WARRANTY

A. General Warranty: Special warranties specified in this Article shall not deprive

Government of other rights Government may have under other provisions of the

Contract Documents and shall be in addition to, and run concurrent with, other warranties made by Contractor under requirements of the Contract Documents.

B. Manufacturer's Special Warranty on Insulating Glass: Written warranty, made out to

Government and signed by insulating-glass manufacturer agreeing to furnish replacements for insulating-glass units that deteriorate as defined in "Definitions"

Article, f.o.b. the nearest shipping point to Project site, within specified warranty period indicated below.

1. Warranty Period: 10 years from date of Substantial Completion.

PART 2 PRODUCTS

2.1 PRODUCTS AND MANUFACTURERS

A. Available Products: Subject to compliance with requirements, products that may be incorporated into the Work include, but are not limited to, the products indicated in schedules at the end of Part 3.

2.2 INSULATING GLASS

A. Insulating-Glass Units: Preassembled units consisting of sealed lites of glass separated by a dehydrated interspace, and complying with ASTM E 774 for Class

CBA units and with requirements specified in this Article and in the Insulating-Glass

Schedule at the end of Part 3.

1. Provide Kind HS (heat-strengthened) float glass in place of annealed glass where needed to resist thermal stresses induced by differential shading of individual glass lites and to comply with glass design requirements specified in "Performance Requirements" Article. Provide Kind FT (fully tempered) where safety glass is indicated.

B. Overall Unit Thickness and Thickness of Each Lite: Dimensions indicated in the

Insulating-Glass Schedule at the end of Part 3 are nominal and the overall thicknesses of units are measured perpendicularly from outer surfaces of glass lites at unit's edge.

C. Sealing System: Dual seal, with primary and secondary sealants as follows:

1. Manufacturer's standard sealants.

D. Spacer Specifications: Manufacturer's standard spacer material and construction.

2.3 PRIMARY FLOAT GLASS

A. Float Glass: ASTM C 1036, Type I (transparent glass, flat), Quality 83 (glazing select), and Class as indicated in schedule at end of Part 3.

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2.4 WIRED GLASS

A. Wired Glass: ASTM C1036, Type II (patterned and wired glass, flat), Class I (clear), Quality q8 (glazing); 6.4 mm thick; of form and mesh pattern indicated below:

1. Polished Wired Glass: Form 1 (wired, polished both sides), and as follows:

a. Mesh m1 (diamond).

B. Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following:

1. Polished Wired Glass:

a. Ashai Glass Co./Ama Glass Corp.

b. Central Glass Co., Ltd.

c. Nippon Sheet Glass Co., Ltd.

d. Pilkington Glass, Ltd.

e. Or Approved Equal.

2.5 COATED FLOAT GLASS

A. General: Provide coated glass complying with requirements indicated in this Article and in schedules at the end of Part 3.

1. Provide Kind HS (heat-strengthened) coated float glass in place of coated annealed glass where needed to resist thermal stresses induced by differential shading of individual glass lites and to comply with glass design requirements specified in "Performance Requirements" Article. Provide Kind FT (fully tempered) where safety glasses is indicated.

2.6 LAMINATE GLASS

A. Laminated Glass: ASTM C1172, and complying with other requirements specified and with the following:

1. Interlayer: Polyvinyl butyral of .060 mm thickness with a proven record of no tendency to bubble, discolor, or lose physical and mechanical properties after laminating glass lites and installation.

a. For polyvinyl butyral interlayers, laminate lites in autoclave with heat plus pressure.

2. Laminating Process: Fabricate laminated glass to produce glass free of foreign substances and air or glass pockets.

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2.7 ELASTOMERIC GLAZING SEALANTS

A. General: Provide products of type indicated, complying with the following requirements:

1. Compatibility: Select glazing sealants that are compatible with one another and with other materials they will contact, including glass products, seals of insulating-glass units, and glazing channel substrates, under conditions of service and application, as demonstrated by sealant manufacturer based on testing and field experience.

2. Suitability: Comply with sealant and glass manufacturers' written instructions for selecting glazing sealants suitable for applications indicated and for conditions existing at time of installation.

3. Colors of Exposed Glazing Sealants: As selected by Contracting Officer’s

Representative from manufacturer's full range for this characteristic.

2.8 GLAZING TAPES

A. Back-Bedding Mastic Glazing Tape: Preformed, butyl-based elastomeric tape with a solids content of 100 percent; nonstaining and nonmigrating in contact with nonporous surfaces; with or without spacer rod as recommended in writing by tape and glass manufacturers for application indicated; packaged on rolls with a release paper backing; and complying with ASTM C 1281 and AAMA 800 for products indicated below:

1. AAMA 806.3 tape, for glazing applications in which tape is subject to continuous pressure.

B. Expanded Cellular Glazing Tape: Closed-cell, PVC foam tape; factory coated with adhesive on both surfaces; packaged on rolls with release liner protecting adhesive;

and complying with AAMA 800 for the following types:

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

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

2.9 MISCELLANEOUS GLAZING MATERIALS

A. General: Provide products of material, size, and shape complying with referenced glazing standard, requirements of manufacturers of glass and other glazing materials for application indicated, and with a proven record of compatibility with surfaces contacted in installation.

B. Cleaners, Primers, and Sealers: Types recommended by sealant or gasket

C. Setting Blocks: Elastomeric material with a Shore A durometer hardness of 85, plus or minus 5.

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D. Spacers: Elastomeric blocks or continuous extrusions with a Shore A durometer hardness required by glass manufacturer to maintain glass lites in place for installation indicated.

E. Edge Blocks: Elastomeric material of hardness needed to limit glass lateral movement (side walking).

F. Cylindrical Glazing Sealant Backing: ASTM C 1330, Type O (open-cell material), of size and density to control glazing sealant depth and otherwise produce optimum glazing sealant performance.

2.10 FABRICATION OF GLASS AND OTHER GLAZING PRODUCTS

A. Fabricate glass and other glazing products in sizes required to glaze openings indicated for Project, with edge and face clearances, edge and surface conditions, and bite complying with written instructions of product manufacturer and referenced glazing standard, to comply with system performance requirements.

B. Clean-cut or flat-grind vertical edges of butt-glazed monolithic lites in a manner that produces square edges with slight kerfs at junctions with indoor and outdoor faces.

C. Grind smooth and polish exposed glass edges.

PART 3 EXECUTION

3.1 EXAMINATION

A. Examine framing glazing, with Installer present, for compliance with the following:

1. Manufacturing and installation tolerances, including those for size, squareness, and offsets at corners.

2. Presence and functioning of weep system.

3. Minimum required face or edge clearances.

4. Effective sealing between joints of glass-framing members.

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

3.2 PREPARATION

A. Clean glazing channels and other framing members receiving glass immediately before glazing. Remove coatings not firmly bonded to substrates.

3.3 GLAZING, GENERAL

A. Comply with combined written instructions of manufacturers of glass, sealants, gaskets, and other glazing materials, unless more stringent requirements are indicated, including those in referenced glazing publications.

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B. Glazing channel dimensions, as indicated on Drawings, provide necessary bite on glass, minimum edge and face clearances, and adequate sealant thicknesses, with reasonable tolerances. Adjust as required by Project conditions during installation.

C. Protect glass edges from damage during handling and installation. Remove damaged glass from Project site and legally dispose of off Project site. Damaged glass is glass with edge damage or other imperfections that, when installed, could weaken glass and impair performance and appearance.

D. Apply primers to joint surfaces where required for adhesion of sealants, as determined by preconstruction sealant-substrate testing.

E. Install setting blocks in sill rabbets, sized and located to comply with referenced glazing publications, unless otherwise required by glass manufacturer. Set blocks in thin course of compatible sealant suitable for heel bead.

F. Do not exceed edge pressures stipulated by glass manufacturers for installing glass lites.

G. Provide spacers for glass lites where the length plus width is larger than 50 inches

(1270 mm) as follows:

1. Locate spacers directly opposite each other on both inside and outside faces of glass. Install correct size and spacing to preserve required face clearances, unless gaskets and glazing tapes are used that have demonstrated ability to maintain required face clearances and to comply with system performance requirements.

2. Provide 1/8-inch (3-mm) minimum bite of spacers on glass and use thickness equal to sealant width. With glazing tape, use thickness slightly less than final compressed thickness of tape.

H. Provide edge blocking where indicated or needed to prevent glass lites from moving sideways in glazing channel, as recommended in writing by glass manufacturer and according to requirements in referenced glazing publications.

I. Set glass lites in each series with uniform pattern, draw, bow, and similar characteristics.

3.4 TAPE GLAZING

A. Position tapes on fixed stops so that, when compressed by glass, their exposed edges are flush with or protrude slightly above sightline of stops.

B. Install tapes continuously, but not necessarily in one continuous length. Do not stretch tapes to make them fit opening.

C. Where framing joints are vertical, cover these joints by applying tapes to heads and sills first and then to jambs. Where framing joints are horizontal, cover these joints by applying tapes to jambs and then to heads and sills.

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D. Place joints in tapes at corners of opening with adjoining lengths butted together, not lapped. Seal joints in tapes with compatible sealant approved by tape manufacturer.

E. Do not remove release paper from tape until just before each glazing unit is installed.

3.5 GASKET GLAZING (DRY)

A. Fabricate compression gaskets in lengths recommended by gasket manufacturer to fit openings exactly, with stretch allowance during installation.

B. Insert soft compression gasket between glass and frame or fixed stop so it is securely in place with joints miter cut and bonded together at corners.

C. Center glass lites in openings on setting blocks and press firmly against soft compression gasket by inserting dense compression gaskets formed and installed to lock in place against faces of removable stops. Start gasket applications at corners and work toward centers of openings. Compress gaskets to produce a weathertight seal without developing bending stresses in glass. Seal gasket joints with sealant recommended by gasket manufacturer.

D. Install gaskets so they protrude past face of glazing stops.

3.6 PROTECTION AND CLEANING

A. Protect exterior glass from damage immediately after installation by attaching crossed streamers to framing held away from glass. Do not apply markers to glass surface.

Remove nonpermanent labels, and clean surfaces.

B. Protect glass from contact with contaminating substances resulting from construction operations, including weld splatter. If, despite such protection, contaminating substances do come into contact with glass, remove them immediately as recommended by glass manufacturer.

C. Examine glass surfaces adjacent to or below exterior concrete and other masonry surfaces at frequent intervals during construction, but not less than once a month, for build-up of dirt, scum, alkaline deposits, or stains; remove as recommended by glass

D. Remove and replace glass that is broken, chipped, cracked, abraded, or damaged in any way, including natural causes, accidents, and vandalism, during construction period.

3.7 INSULATING-GLASS SCHEDULE

A. Low-E Insulating Glass IG-1: Where glass of this designation is indicated, provide low-emissivity insulating-glass units complying with the following:

1. Products: Available products include the following:

a. Sun Management Glass System by Pilkington: P.O. Box 799, 811

Madison Ave., Toledo, OH 43697-0799

b. Oldcastle Glass

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c. Low-Emissivity Coating: Pyrolytic

d. Or roved Equal.

2. Overall Unit Thickness: 1” and Thickness of Each Lite: 1/4” (6mm)

3. Interspace Content: Argon.

4. Indoor Lite:

a. Kind: HS heat strengthened, for outer and inter ply

b. Kind: FT fully tempered at doors and sidelights, for outer and inter ply.

c. Outer and inter ply thickness (3 mm).

5. Outdoor Lite: Bronze Tint by Pilkington Libbey-Owens-Ford, on second surfaces, or approved equal.

a. Kind: HS heat strengthened

b. Kind: FT fully tempered without reflective tint at doors and sidelights.

6. Low-Emissivity Coating: Pyrolytic on third surface

7. Visible Light Transmittance: 45%

8. Winter Daytime U-Value: 0.28

9. Summer Nighttime U-Value: 0.36

10. Solar Heat Gain Coefficient: 0.45

11. Outdoor Visible Reflectance: 9%

12. Shading Coefficient: .52

3.8 MONOLITHIC FLOAT GLASS SCHEDULE

A. Uncoated Clear Float Glass: Where glass as designated below is indicated, provide

Type I (transparent glass, flat), Class 1 (clear) glass lites complying with the following:

1. Uncoated Clear Annealed Float Glass FG-1: Annealed or Kind HS (heat strengthened), Condition A (uncoated surfaces) where heat strengthening is required to resist thermal stresses induced by differential shading of individual glass lites and to comply with performance requirements. Kind

FT (fully tempered) where noted FG-1T.

B. Polished Wired Glass WG-1: Where designated, provide as specified in Part 2

Products.

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END OF SECTION 08 81 00