084110-B500Drev15May.doc

ATTACHMENT 1

FA4626-12-R-0007

Repair Entrance Windows Bldg 500

PROJECT NZAS 09-1048

MALMSTROM AIR FORCE BASE

DIVISION 08 – DOORS AND WINDOWS

SECTION 084110 - SECURITY ALUMINUM WINDOWS

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this section.

1.2 SUMMARY

A. This Section includes the following types of aluminum exterior window work:

1. Exterior windows.

1.3 SYSTEM PERFORMANCE REQUIREMENTS

A. General: Provide blast resistant aluminum window and door storefront assemblies that comply with performance characteristics specified, as demonstrated by testing the manufacturer's corresponding stock assemblies according to test methods indicated.

B. Thermal Movement: Design the blast resistant aluminum entrance and storefront framing systems to provide for expansion and contraction of the component materials. Blast resistant glazed entrance doors shall function normally over the specified temperature range.

1. The system shall be capable of withstanding a metal surface temperature range of 180 degrees F without buckling, failure of joint seals, undue stress on structural elements, damaging loads on fasteners, reduction of performance, stress on glass or other detrimental effects.

C. Design Requirements: Provide blast resistant aluminum entrance and storefront systems that comply with structural performance, air infiltration, and water penetration requirements when tested in accordance with AAMA 501 performance criteria.

1. Blast Resistance Design: UFC Blast Design Criteria: The overall aluminum window system including all components shall be designed, fabricated, and installed to comply with the blast loading requirements of UFC 4-010-0, “DoD Minimum Antiterrorism Standards for Buildings”, 8 October, 2003, including change 1, 22 January 2007. The stair tower and canopy structure fall under a controlled perimeter, low level of protection. Conventional standoff of 82 feet and an applicable explosive weight of II.

D. Structural Performance: Conduct tests for structural performance in accordance with ASTM E 331 and AAMA 501.1. At the conclusion of the tests there shall be no glass breakage or permanent damage to fasteners, anchors, hardware or actuating mechanism. Framing members shall have no permanent deformation in excess of 0.2 percent of their clear span.

1. Deflection Normal to the Plane of the Wall: Deflections shall not exceed 1/175 or 3/4 inch, whichever is less when subjected to structural performance by static pressure (ASTM E 330) for a positive and negative design wind load of 20 psf. The system shall not show any damage or failure when further subject to positive and negative loads of 30 psf to demonstrate a safety factor of 1.5 times design load.

E. Assembly Design: Provide gutters and weep system to collect and drain to the exterior water leakage and condensation. Glazing details shall permit glass replacement after initial construction, shall permit use reuse of original gaskets, shall permit replacement glass of the same nominal size as original glass, and shall not require cutting of framing members or removal of interior finishes. Vision glass in conventional frames shall be replaceable from the interior.

F. Interior window sill trim shall not deflect more than 0.125 inch when subjected to a concentrated force of 25 pounds at any point. Residual deflection after removal of force shall not exceed 0.062 inch.

G. Snap engaged components shall not disengage when subjected to a concentrated force of 10 pounds at any point or during uniform pressure structural tests at pressures less than or equal to 1.5 times design pressures. Snap engaged components shall be secured against migration. Snap engaged components shall not serve any primary structural function, such as retention of glass or panels. Snap engaged plastic components are not permitted, except as nonstructural thermal improvement for interior trim. Joints in continuous snap covers and other continuous trim shall have splice sleeves of the same material and finish as the cover or trim.

H. Provide completely prefabricated, assembled and shop glazed unitized components to the field for shortest possible field erection time.

1.4 SUBMITTALS

A. Highlight all descriptive literature to accomplish identification of specific components/items which are proposed to be furnished. Government will not react to descriptive material/literature which has not been highlighted, except to reject the Submittal:

B. General: Submit the following in accordance with Conditions of the Contract and Division 01 Specification Sections.

C. Product data for each blast resistant aluminum entrance and storefront system, including:

1. Manufacturer's standard details and fabrication methods.

2. Data on security glass, finishes, hardware and accessories.

3. Recommendations for maintenance and cleaning of exterior surfaces.

D. Shop Drawings for each blast resistant aluminum entrance and storefront system required, including:

1. Layout and installation details, including relationship to adjacent work.

2. Elevations at 1/4-inch scale.

3. Detail sections of typical composite members.

4. Anchors and reinforcements.

5. Glazing details.

E. Test Reports: Provide test report, calculations and summary from a firm specializing in analysis of the effects of bomb blast and accidental explosion indicating that the proposed systems satisfy all of the requirements of the protection level indicated. All test reports shall be project specific and indicate actual sizes, configurations and conditions unique to this Project.

F. Provide certified test reports from a qualified independent testing laboratory showing that blast resistant aluminum entrance and storefront systems have been tested in accordance with specified test procedures and comply with performance characteristics indicated. All materials used in performance of this project must comply with the requirements of UL 752 and be UL Listed Level 3.

1.5 QUALITY ASSURANCE

A. Fabricator Qualifications: Provide blast resistant aluminum entrances and storefront systems fabricated by a firm experienced in producing systems that are similar to those indicated for this Project, and that have a record of successful in-service performance. The fabricator shall have sufficient production capacity to produce components required without causing delay in progress of the Work.

B. Single Source Responsibility: Obtain aluminum entrance and storefront systems from one source and from a single manufacturer.

1.6 DELIVERY, STORAGE AND HANDLING

A. Deliver blast resistant aluminum entrance and storefront components in the manufacturer's original protective packaging.

B. Store blast resistant aluminum components in a clean, dry location away from uncured masonry or concrete. Cover components with waterproof paper, tarpaulin, or polyethylene sheeting in a manner to permit circulation of air.

1. Stack framing components in a manner that will prevent bending and avoid significant or permanent damage.

1.7 PROJECT CONDITIONS

A. Field Measurements: Check openings by accurate field measurements before fabrication. Show recorded measurements on Shop Drawings. Coordinate fabrication schedule with construction progress to avoid delay of the work.

1. Where necessary, proceed with fabrication without field measurements and coordinate fabrication tolerances to ensure proper fit.

1.8 WARRANTY

A. Warranty: Submit a written warranty, executed by the manufacturer, agreeing to repair or replace units that fail in materials or workmanship within the specified warranty period. Failures include, but are not necessarily limited to:

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

2. Faulty operation.

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

B. Warranty Period: One (1) year after the date of Substantial Completion.

C. The warranty shall not deprive the Owner of other rights or remedies the Owner may have under other provisions of the Contract Documents, and is in addition to and runs concurrent with other warranties made by the Contractor under requirements of the Contract Documents.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Available Manufacturers: Subject to compliance with requirements, manufacturers offering blast resistant entrance and storefront systems that may be incorporated in the work include, but are not limited to, the following:

1. Graham Architectural Products – 800-755-6274

2. Norshield Security Products, Montgomery, AL 334/ 281-8440.

3. Insulgard Corporation, Hyattsville, MD.

2.2 MATERIALS

A. Aluminum Members: All aluminum extrusions shall be extruded from 6063-T6 alloy or equal with aluminum tensile strength (minimum 35.0 ksi ultimate, 32.0 ksi yield).

B. Carbon Steel reinforcement of aluminum framing members shall comply with ASTM A 36 for structural shapes, plates and bars, ASTM A 611 for cold rolled sheet and strip, or ASTM A 570 for hot rolled sheet and strip.

C. Security Glass: See Specification Section 088000 - Glazing.

D. The security glass shall be warranted for 5 years against delamination, insulating seal failure, hazing or fogging of the air space and shall be UL listed for UL Level 3 blast resistance where indicated.

E. Exterior glass components shall be insulated for weather ability. Security glass units of an air gap design will not be acceptable for use in an exterior application.

F. Setting Blocks: Setting blocks shall be dense extruded silicone or EPDM with a hardness of 85 +/- 5 durometer Shore A, a minimum length of 4 inches, and a minimum width corresponding to the glass thickness. Setting blocks shall be equidistant from the glass centerline. Location of setting blocks at glass quarter points is acceptable. The distance from the vertical glass edge to the nearest edge of the setting block shall not be less than six inches or 0.125 times glass width, whichever is greater.

G. Side Blocks: Provide two side blocks minimum at both jambs at approximately the quarter points of the glass edge. Blocks shall be a 55 +/- 5 durometer Shore A dense silicone or EPDM. Install block with 0.125 inch clearance between block and bearing surface. Positively secure blocks in position. Side blocks may be omitted where glass is secured with structural silicone.

H. Interior and exterior glazing gaskets shall be solid extruded santoprene or EPDM.

I. Anchors in Concrete: Anchors embedded in concrete shall be prime painted or hot dip galvanized rolled steel, or hot dip galvanized cold formed steel, with integral projections or welded deformed bars or headed studs. Provide expansion bolts in concrete. Self drilling, self threading screws are not acceptable. Screws in plugs and power actuated fasteners are not acceptable.

J. Fasteners: Fastener requirements listed below are applicable to screws, bolts, nuts, washers, rivets, and pins.

K. Fasteners outboard of or within a glazing pocket, gutter, finished cavity or other potentially wet location (after completion of construction) shall be stainless steel type 302 or 304. Fasteners inboard of potentially wet locations shall be stainless steel type 302 or 304, cadmium plated carbon steel or zinc plated carbon steel.

L. Provide lock washer or other locking device at all bolted connections.

M. Powder actuated fasteners are not acceptable.

N. Where fasteners screw-anchor into aluminum members less than 0.125 inches thick, reinforce the interior with nonmagnetic stainless steel to receive screw threads.

O. Do not use exposed fasteners except for application of hardware. For application of hardware, use Phillips flat head machine screws that match the finish of member or hardware being fastened.

P. Shims: At connections subject to movement, separate all pairs of moving surfaces with friction reducing pads. Pads shall have minimum 0.125 inch thickness and shall be positively retained in position (open ended slots are not acceptable).

Q. Plastic shims are acceptable at static connections for which the shims transfer only compressive forces. Wood shims are not acceptable.

R. Sealants:

1. Acceptable products for nonstructural seals to substrates other than stone are: General Electric Sillpruf; Dow Corning 790 and 795; Tremco Spectrem 1 and 2. Acceptable products for nonstructural seals to stone are: General Electric Sillpruf; Dow Corning 790 and 795.

S. Data sheets and samples may be submitted for consideration of other sealants, which are subject to approval. Oil base sealants are not acceptable.

T. Brackets and Reinforcements: Provide high strength nonmagnetic stainless steel brackets or hot-dip galvanized steel complying with ASTM A 123.

U. Concrete and Masonry Inserts: All internal fasteners shall be 300 Series stainless steel. Framing to building structure shall be grade 5, cadmium or nickel plated.

2.3 HARDWARE

A. Refer to Division 8 Section "Finish Hardware" for requirements for hardware items other than indicated to be provided by the blast resistant aluminum entrance manufacturer.

B. Provide heavy-duty hardware units as indicated, scheduled, or required for operation of each door as specified. Doors shall include the following hardware items in US10D finish:

1. Hager/Roton Heavy Duty Continuous Hinge HD-226.

2. LCN 4041Heavy Duty Closer x Parallel Arm.

3. Adams Rite MS1850 Deadbolt with Cylinder both sides.

4. Manufacturer’s standard offset tubular pulls (no push bar required).

5. Manufacturer’s standard weather-stripping.

2.4 COMPONENTS

A. Security Storefront Framing System: Provide security storefront and entrance framing systems fabricated from extruded aluminum members of 2" x 5-1/2" minimum profile indicated. Include subframes and other reinforcing members of the type indicated. Shop fabricate and preassemble frame components.

B. Mullion Configurations: Provide pockets at the inside glazing face to receive specified glazing gaskets. Mullions and horizontals shall be preassembled into preglazed units. Make provisions to drain moisture accumulation to the exterior.

C. Exterior Door Frames: Provide security entrance door frame assemblies, as indicated, with welded or mechanical joints in accordance with manufacturer's standards. Reinforce as necessary to support required loads.

D. Glazing: Provide hook-in extruded interior aluminum glazing stops, with exterior flanges anchored nonremovable.

E. Design: Provide doors of design indicated and fully compatible with security storefront and entrance framing systems and manufactured to receive blast resistant glazing specified. Door frames as well as glazing shall meet U.L. 752 Level 3 blast resistance specified herein.

F. Lights: Provide blast resistant glazing openings as indicated, with specified moldings and stops. Provide nonremovable stops on the exterior.

2.5 FABRICATION

A. General: Fabricate security aluminum entrance and storefront components to designs, sizes and thicknesses indicated and to comply with indicated standards. Sizes and profile requirements are indicated on the drawings. Variable dimensions are indicated with maximum and minimum dimensions required to achieve design requirements and coordination with other work.

B. Prefabrication: Complete fabrication, assembly, finishing, hardware application, and other work to the greatest extent possible before shipment to the project site. Disassemble components only as necessary for shipment and installation. Typical fixed modules shall be completely prefabricated, shop assembled and shop glazed.

C. Perform fabrication operations, including cutting, fitting, forming, drilling and grinding of metal work to prevent damage to exposed finish surfaces. Complete these operations for hardware prior to application of finishes. Preassemble framing into prefabricated units and shop glaze insofar as practicable.

D. Preglaze door and frame units to greatest extent possible. Typical fixed modules shall be shop glazed.

E. Welding: Comply with AWS recommendations. Grind exposed welds smooth to remove weld spatter and welding oxides. Restore mechanical finish. Welding behind finished surfaces shall be performed in such a manner as to minimize distortion and discoloration on the finished surface.

F. Dissimilar Metals: Separate dissimilar metals with bituminous paint, or a suitable sealant, or a nonabsorptive plastic or elastomeric tape, or a gasket between the surfaces. Do no use coatings containing lead.

G. Fasteners: Conceal fasteners wherever possible. Exposed fasteners shall not be allowed at typical frame conditions.

H. Weatherstripping: For exterior doors, provide compression weatherstripping against fixed stops. At other edges, provide sliding weatherstripping retained in adjustable strip mortised into door edge. Provide EPDM or vinyl-blade gasket weatherstripping in bottom door rail, adjustable for contact with threshold. All interior door and other locations without weatherstripping, provide neoprene silencers on stops to prevent metal-to-metal contact.

2.6 ANODIZED ALUMINUM FINISH

A. Finish of all components shall comply with approved color range samples.

B. Anodized finish shall be Aluminum Association Architectural Class 1. Minimum coating thickness shall be 0.7 mil (0.0178 mm) and minimum coating weight shall be 27 milligrams per square inch (41.8 grams per square meter).

C. Samples from production lots of finished material shall be tested in accordance with the following ASTM specifications:

1. ASTM B137 - Coating Weight.

2. ASTM B244 - Coating Thickness.

3. ASTM B136 - Seal (Dye Stain Test) Nitric Acid Wash is Mandatory.

D. Standard anodized colors are dark bronze.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine substrates and supports, with the installer present, for compliance with requirements indicated, installation tolerances, and other conditions that affect installation of aluminum entrances and storefronts. Correct unsatisfactory conditions before proceeding with the installation. Do not proceed with installation until unsatisfactory conditions are corrected.

3.2 INSTALLATION

A. Comply with manufacturer's instructions and recommendations for installation.

B. Set units plumb, level, and true to line, without warp or rack of framing members, doors, or panels. Install components in proper alignment and relation to established lines and grades indicated. Provide proper support and anchor securely in place.

C. Construction Tolerances: Install security aluminum entrance and storefront to comply with the following tolerances.

1. Variation from Plane: Do not exceed 1/8-inch in 12 feet of length or 1/4-inch in any total length.

2. Offset from Alignment: The maximum offset from true alignment between two identical members abutting end to end in line shall not exceed 1/16-inch.

3. Diagonal Measurements: The maximum difference in diagonal measurements shall not exceed 1/8-inch.

4. Offset at Corners: The maximum out-of-plane offset of framing at corners shall not exceed 1/32-inch.

D. Separate aluminum and other corrodible metal surfaces from sources of corrosion or electrolytic action at points of contact with other materials.

1. Zinc or cadmium plate steel anchors and other unexposed fasteners after fabrication.

2. Paint dissimilar metals where drainage from them passes over aluminum.

3. Paint aluminum surfaces in contact with mortar, concrete or other masonry with alkali resistant coating.

4. Paint wood and similar absorptive material in contact with aluminum and exposed to the elements or otherwise subject to wetting, with two coats of aluminum house paint. Seal joints between the materials with sealant.

5. Drill and tap frames and doors and apply surface mounted hardware items. Comply with hardware manufacturer's instructions and template requirements. Use concealed fasteners wherever possible.

E. Set sill members and other members in bed of sealant as indicated, or with joint fillers or gaskets as indicated to provide weathertight construction.

3.3 ADJUSTING

A. Adjust operating hardware to function properly, for smooth operation without binding, and for weathertight closure.

3.4 CLEANING

A. Clean the completed system, inside and out, promptly after installation, exercising care to avoid damage to coatings.

B. Clean glass surfaces after installation. Remove excess glazing and sealant compounds, dirt and other substances from aluminum surfaces.

3.5 PROTECTION

A. Institute protective measures required thoughout the remainder of the construction period to ensure that aluminum entrances and storefronts will be without damage or deterioration, other than normal weathering, at time of acceptance.

END OF SECTION 084110

SECURITY ALUMINUM WINDOWS

084110 - 1