B08_Attach_98_REV_1st_Bank_057313_Glazed_Decorative_Metal_Railings_0007.pdf

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PMIS 245589 GLAZED DECORATIVE METAL RAILINGS

SECTION 05 73 13 -- GLAZED DECORATIVE METAL RAILINGS

1.1 SUMMARY: The work of this Section includes, but is not limited to, the following:

A. Fabrication and installation of glass guardrails in building addition as indicated.

B. Fabrication and installation of new curved frameless glass guardrail at window openings overlooking historic curved stair.

1.2 RELATED WORK

A. Division 1 requirements

B. Section 05 12 00, Structural Steel”

C. Section 05 73 00, “Decorative Metal Railings”

1.1 REFERENCES

A. ESR-3269 ICC-ES Evaluation Report, International Code Council Standards for Glass Balustrade Guard Rail Applications

B. ASTM C 1048 – Standard Specification for Heat Treated Flat Glass – Kind HS, Kind FT Coated and Uncoated Glass

C. NAAMM Metal Finishes Manual; national Association of Architectural Metal Manufacturers

1.4 SUBMITTALS

A. Shop Drawings: Submit fabricators’ shop drawings for the following:

1. New glazed guardrails

2. Shop drawings shall include, at a minimum, plans, elevations, materials, dimensions, calculations, anchorage and installation details for existing substrates.

B. Product Data: Submit manufacturer’s product data for the following:

1. Manufacturer's product lines of railings assembled from standard components

2. Post-installed anchors for new glazed guardrails

C. Delegated Design Submittal: For installed products indicated to comply with performance requirements and design criteria, including analysis data signed and sealed by the qualified professional engineer responsible for their preparation.

1.4 QUALITY ASSURANCE

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A. Structural Performance

1. Delegated Design: Engage a qualified professional engineer, as defined in Section 014000 "Quality Requirements," to design railings, including attachment to building construction.

2. Structural Performance: Railings, including attachment to building construction, shall withstand the effects of gravity loads and the following loads and stresses within limits and under conditions indicated:

a. Handrails and Top Rails of Guards:

i. Uniform load of 50 lbf/ft. applied in any direction.

ii. Concentrated load of 200 lbf applied in any direction.

iii. Uniform and concentrated loads need not be assumed to act concurrently.

b. Infill of Guards:

i. Concentrated load of 50 lbf applied horizontally on an area of 1 sq. ft..

ii. Infill load and other loads need not be assumed to act concurrently.

c. Glass-Supported Railings: Support each section of top rail by a minimum of three glass panels or by other means so top rail will remain in place if any one panel fails.

1.5 DELIVERY, STORAGE AND HANDLING

A. Deliver new glass railings to the project site in secure packaging, protected against scratches, cracks and abrasion. Inspect all components upon delivery and refuse delivery of damaged items. Exercise care in lifting and handling glass sections to avoid inducing stress in glass and damage to finished surfaces.

B. Deliver new glass railings to the project site for immediate installation. Do not store custom glass fabrications on site.

1.6 PROJECT CONDITIONS

A. The Contractor shall protect finished surfaces and adjacent assemblies to remain during installation of glass railings. Damage to wall, trim, stair or floor surfaces shall be repaired by the Contractor to the satisfaction of, and at no additional cost to, the Government.

B. Coordinate installation of glass railings with other trades affected by the work of this Section including, but not limited to, plastering, painting and flooring, to avoid damage to finished work and/or delays to the project schedule.

PART 2 - PRODUCTS

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2.1 BASIS OF DESIGN

A. Glass Guardrail

1. Basis of Design: JB Glass Railing; Julius Blum & Company, Carlstadt, NJ

2. Alternate Manufacturers:

a. C.R. Laurence, Vernon, CA

b. VIVA Railings, Lewisville, TX

c. The Wagner Companies, Milwaukee, WI

d. Contracting Officer-approved equivalent

2.2 GLASS AND GLAZING MATERIALS

A. Safety Glazing: Glazing shall comply with 16 CFR 1201, Category II.

B. Laminated Glass: ASTM C 1172, Condition A (uncoated), Type I (transparent flat glass), Quality-Q3 with two plies of glass and polyvinyl butyral interlayer not less than 0.060 inch thick.

1. Kind: LT (laminated tempered).

2. Glass Color: Clear.

3. Interlayer Color: Clear.

4. Glass Plies for Structural Glass Balusters: Thickness required by structural loads, but not less

C. Glazing Gaskets for Glass Infill Panels: Glazing gaskets and related accessories recommended or supplied by railing manufacturer for installing glass infill panels in post-supported railings.

2.3 METALS, GENERAL

A. Brackets, Flanges, and Anchors: Same metal and finish as supported rails unless otherwise indicated.

2.3 ALUMINUM

A. Aluminum, General: Provide alloy and temper recommended by aluminum producer and finisher for type of use and finish indicated, and with strength and durability properties for each aluminum form required not less than that of alloy and temper designated below.

1. Extruded Bars and Shapes: ASTM B 221, Alloy 6063-T5/T52.

2. Plate and Sheet: ASTM B 209, Alloy 5005-H32.

3. Castings: ASTM B 26, Alloy A356.0-T6.

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4. Clear Anodic Finish: AAMA 611, AA-M12C22A31, Class II, 0.010 mm

2.4 COPPER ALLOYS

A. Bronze

1. Architectural Bronze

a. Extrusions: C38500

b. Castings: C86500

c. Recycled content: 20%

2. Finish: Buffed Finish, Lacquered: M21-O6x (Mechanical Finish: buffed, smooth specular;

Coating: clear organic, air dried, as specified below).

a. Clear, Organic Coating: Lacquer specified for copper alloys, applied by air spray in two coats per manufacturer's written instructions, with interim drying, to a total thickness of 1 mil.

2. Finish (Guard Rail Caps in New Addition): Statuary Conversion Coating over Satin Finish:

M31-C55 (Mechanical Finish: directionally textured, fine satin; Chemical Finish: conversion coating, sulfide).

2.5 RAILING COMPONENTS

A. Railing Components

1. Cap Rail: Bronze, to match Julius Blum 1230. Curved and straight segments as indicated.

2. Provide curved or straight laminated glass panels as indicated.

3. Shoe mold: Aluminum wrapped in bronze sheet; rectangular cross-section to match Julius Blum 1142, curved or straight as required for surface and fascia-mounted installation on steel curbs and stringers

2.6 FABRICATION

A. Metals

1. General: Fabricate railings to comply with requirements indicated for design, dimensions, member sizes and spacing, details, finish, and anchorage, but not less than that required to support structural loads.

2. Mechanical Connections: Connect members with concealed mechanical fasteners and fittings.

Fabricate members and fittings to produce flush, smooth, rigid, hairline joints.

3. Form changes in direction by bending.

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4. Bend members in jigs to produce uniform curvature for each configuration required; maintain cross section of member throughout entire bend without buckling, twisting, cracking, or otherwise deforming exposed surfaces of components.

5. Close exposed ends of hollow railing members with prefabricated end fittings.

6. Brackets, Flanges, Fittings, and Anchors: Provide wall brackets, flanges, miscellaneous fittings, and anchors to interconnect railing members to other work where indicated.

B. Glass Panels

1. Structural Panels: Provide curved, laminated, tempered glass panels.

2.6 ANCHORS AND FASTENERS

A. Fasteners: Type 304 stainless steel or as recommended by railing system manufacturer.

B. Post-Installed Anchors: Fastener systems with working capacity greater than or equal to the design load, according to an evaluation report acceptable to authorities having jurisdiction, based on ICC-ES AC193 (mechanical anchors) or ICC-ES AC308 (adhesive anchors)

1. Hilti

2. Simpson

3. Contracting Officer-approved equivalent

PART 3 - EXECUTION

3.1 INSTALLATION

A. Fit exposed connections together to form tight, hairline joints.

B. Perform cutting, drilling, and fitting required for installing railings. Set railings accurately in location, alignment, and elevation; measured from established lines and levels and free of rack.

1. Set panels plumb within a tolerance of 1/16 inch in 3 feet and flush with one another.

2. Align rails so variations from level for horizontal members and variations from parallel with rake of steps and ramps for sloping members do not exceed 1/4 inch in 12 feet.

3. Anchor posts to metal surfaces with flanges, angle type, or floor type as required by conditions, connected to posts and to metal supporting members.

3.2 CLEANING

A. Clean glazing surfaces after installation, complying with requirements contained in the manufacturer’s instructions. Remove excess glazing sealant compounds, dirt or other substances.

B. Remove protective films from metal surfaces.

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C. Clean railing surfaces with clean water and mild detergent. Do not use abrasive chemicals, detergents, or other implements that may mar or gouge the material.

3.3 PROTECTION

A. Institute protective measures required throughout the remainder of the construction period to ensure that all the materials do not incur any damage or deterioration.

B. Repair components damaged by subsequent construction activities in accordance with manufacturer’s recommendations; replace damaged components that cannot be repaired to Contracting Officer’s acceptance.

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c. Glass-Supported Railings: Support each section of top rail by a minimum of three glass panels or by other means so top rail will remain in place if any one panel fails.

C. Glazing Gaskets for Glass Infill Panels: Glazing gaskets and related accessories recommended or supplied by railing manufacturer for installing glass infill panels in post-supported railings.

3. Anchor posts to metal surfaces with flanges, angle type, or floor type as required by conditions, connected to posts and to metal supporting members.