057510 FORMED ALUMIUM SCREENING.pdf

VA PROJECT #589A4-21-100 02-23-22

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SECTION 05 75 10

FORMED ALUMINUM SCREENING

BID QUESTIONS RESPONSE 02/23/2022

PART 1 - GENERAL

1.01 SUMMARY

A. Section Includes:

1. Prefabricated perforated aluminum screen

2. Mounting components and accessories

3. Mechanical fasteners

B. Related Requirements:

1. Drawings and general provisions of the Contract, including General and Supplementary

Conditions and Division 01 Specification Sections, apply to this Section.

2. Section 01 33 23 – SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES: For administrative and procedural requirements for processing of submittals during the construction phase.

VA PROJECT #589A4-21-100 01-01-21

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5. Section 09 91 00 - Painting: For site finishing.

1.02 REFERENCES

A. Reference Standards and Codes:

1. The Aluminum Association, Inc. (AA):

a. AA DAF-45, 2003(2009), Designation System for Aluminum Finishes

2. American Architectural Manufacturers Association (AAMA):

a. AAMA 611-14, Voluntary Specification for Anodized Architectural Aluminum

b. AAMA 2605-17, Voluntary Specification, Performance Requirements and Test

Procedures for Superior Performing High Performance Organic Coatings on

Aluminum Extrusions and Panels

3. ASTM International (ASTM):

a. ASTM B209-14, Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate

b. ASTM B221-14, Standard Specification for Aluminum and Aluminum-Alloy

Extruded Bars, Rods, Wire, Profiles, and Tubes

c. ASTM B429/B429M-10e1, Standard Specification for Aluminum-Alloy Extruded

Structural Pipe and Tube

d. ASTM B483/B483M-13e1, Standard Specification for Aluminum and Aluminum-

Alloy Drawn Tube and Drawn Pipe for General Purpose Applications

4. American Welding Society (AWS):

a. AWS D1.2/D1.2M-2014, Structural Welding Code - Aluminum

5. International Building Code (IBC), 2012 Edition.

7. The Society for Protective Coatings (SSPC):

a. SSPC-Paint 15 (March 2004), Steel Joist Shop Primer/Metal Building Primer

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b. SSPC-Paint 20 (November 2004), Zinc-Rich Coating (Type I - Inorganic, and Type II

- Organic)

1.03 ADMINISTRATIVE REQUIREMENTS

A. Coordination: Coordinate installation of anchorages for screen. Furnish setting drawings, templates, and directions for installing anchorages, including sleeves, concrete inserts, anchor bolts, and items with integral anchors, that are to be embedded in concrete. Deliver such items to Project site in time for installation.

1.04 ACTION SUBMITTALS

A. Submit in accordance with Section 01 33 23 – SHOP DRAWINGS, PRODUCT DATA, AND

SAMPLES:

1. Product Data: Material description and installation instructions for manufactured products.

2. Shop Drawings:

a. Include plans, elevations, sections, details, attachments, anchors, and size and type of fasteners, and accessories.

b. Indicate welded connections and details of welds.

3. Furnish setting drawings, diagrams, templates, instructions, and directions for installation of anchorages, such as concrete inserts, anchor bolts and miscellaneous items having integral anchors, which are to be embedded in concrete construction. Coordinate delivery of such items to Project site.

4. Samples for Initial Selection: For products involving selection of color, texture, or design.

5. Samples for Verification: For each type of exposed finish required.

a. Section of screen, including specified perforation design(s), bends and supports, each in the finish specified.

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1) Submit 2samples, each minimum 8 inches long and not less than 12 inches wide.

1.05 QUALITY ASSURANCE

A. Comply with Standards and Codes listed in Article 1.02 REFERENCES.

B. Welding Qualifications: Qualify procedures and personnel according to the following:

1. AWS D1.2/D1.2M, for aluminum.

1.06 DELIVERY, STORAGE, AND HANDLING

A. Deliver, store and handle fence components in a manner that will prevent distortion or damage.

B. Store clear of the ground and protect from moisture and the elements.

C. Deliver items required to be built into concrete promptly to the site so they may be built in as the work progresses.

D. Do not install damaged and otherwise unsuitable material.

1.07 FIELD CONDITIONS

A. Field Measurements: Verify actual locations of walls and other construction contiguous with metal fabrications by field measurements before fabrication.

1. Indicate field measurements on final shop drawings.

2. Where field measurements cannot be made without delaying the Work, guarantee dimensions and proceed with fabrication of products without field measurements.

3. Coordinate construction with work of other trades to ensure that actual dimensions correspond to guaranteed dimensions.

1.08 WARRANTY

A. Special Finish Warranty (High-Performance Organic Coatings): Applicator's standard form in which applicator agrees to repair or replace components on which finishes do not comply with requirements or that fail in materials or workmanship within specified warranty period.

Warranty does not include normal weathering.

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

PART 2 - PRODUCTS

SPECIFIER: Select Manufacturer or Fabricator in Article heading below.

2.01 BASIS OF DESIGN

A. Astro Metal Craft

11059 Lamont Avenue NE

Hanover, MN 55341

(763)777-8087 www.astrometalcraft.com

B. Substitutions: By approved equal.

2.02 PERFORMANCE CRITERIA

A. Wind load per (IBC 2012, ASCE-7/10 40PSF and 60 PSF).

B. Deflection of aluminum panels to be L/60 max.

C. Deflection of panel framing members to be L/175 max.

D. Thermal Movements: Allow for thermal movements from ambient and surface temperature changes acting on exterior metal fabrications by preventing buckling, opening of joints, overstressing of components, failure of connections, and other detrimental effects.

1. Temperature Change: 120 degrees F, ambient; 180 degrees F, material surfaces.

E. Control of Corrosion: Prevent galvanic action and other forms of corrosion by insulating metals and other materials from direct contact with incompatible materials.

2.03 MATERIALS

A. General:

1. Metal Surfaces: Provide materials with smooth surfaces, without seam marks, roller marks, rolled trade names, stains, discolorations, or blemishes.

2. Aluminum: 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 specified below.

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3. Component Sizes: Unless otherwise specified herein, sizes are indicated on Drawings.

B. Perforated Screen Panels:

1. Aluminum Plate: ASTM B209, 5052-H32 alloy; anodizing quality aluminum plate, 0.125-

.1875 inch thick.

2. Panel Dimensions:

a. Width: [.1875 thick = 48’’ Max] inches.

b. Length: [.1875 thick = 120’’ Max] inches.

3. Perforations:

a. Shape(s): Square holes, with 3/4-inch solid gaps between holes and 3/8-inch solid edges.

b. Size(s):

1) Square Perforations: 3/4-inch

a. Pattern: Straight pattern.

4. CAD file will be provided at manufacturers written request.

C. Aluminum Angle Supports: ASTM B221, 6061-T6 alloy, extruded angle, 0.1875-inch thickness.

D. Exposed Fasteners: Flush countersunk screws or bolts, consistent with design of screen.

E. Welding Electrodes: Comply with AWS requirements in D1.1 and D1.2.

1. For aluminum, provide type and alloy as recommended by producer of metal to be welded and as required for color match, strength, and compatibility in fabricated items.

F. Fasteners, Anchors and Inserts:

1. Aluminum Component Fasteners: Type 300 series stainless-steel fasteners (ELCO BI-

FLEX).

2. Fasteners for Anchoring Frames to Concrete: Select fasteners of type, grade, and class required to produce connections suitable for anchoring posts to concrete as indicated on

Drawings and capable of withstanding design loads.

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3 Inserts: Furnish inserts to be set or otherwise secured to supporting Work.

a. For anchorage to concrete, provide inserts to be cast into concrete, for bolting anchors.

2.04 FABRICATION

A. General:

1. Fabricate panel components 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.

C. Joinery and Terminations:

1. Fabricate components to produce joints tightly fitted and secured.

2. Form curved sections, if any, by rolling to produce uniform curvature indicated without buckling, twisting, or otherwise deforming exposed surfaces of screen panels.

3. Close exposed ends of tube support by welding cover plate in place or by use of prefabricated fittings.

B. Accurately form components to suit specific project conditions and for proper connection to other construction.

1. Panels:

a. Perforations: Punch metals cleanly and accurately. Remove burrs.

b. Exposed Edges: Ease exposed edges to a radius of approximately 1/32 inch unless otherwise indicated.

c. Curved Panels: Form curved sections, if any, by rolling to produce uniform curvature indicated without buckling, twisting, or otherwise deforming exposed surfaces of fence panels.

d. Apply finish specified, after bending.

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C. Dissimilar Metals: Provide nylon or other manufacturer suggested gaskets at mounting flanges, and other areas where fence panels or posts are scheduled to attach to dissimilar metals or concrete. Cut gaskets to match profile of mounting flange.

2.05 FINISHES

A. Panels and Supports:

1. High-Performance Organic Finish: Two-coat fluoropolymer finish complying with

AAMA 2605 and containing not less than 70 percent PVDF resin by weight in color coat.

Prepare, pretreat, and apply coating to exposed metal surfaces to comply with coating and resin manufacturers' written instructions.

D. Refer to Section 09 91 00 - PAINTING: For site finishing of screens.

E. Protect shop-applied finishes on surfaces exposed to view in the finished Work from damage, by applying a temporary protective covering or by other methods recommended by the coating applicator before shipment.

PART 3 - EXECUTION

3.01 EXAMINATION

SPECIFIER: Select correct entity in paragraph below.

A. Examine substrates, areas, and conditions, with installer present where indicated, for compliance with requirements for installation tolerances and other conditions affecting performance. Notify the COR of conditions detrimental to performance of the Work and recommended corrections.

Where the installation and its completion may be delayed due to existing conditions, follow notification immediately with a written report. Proceed with installation only after unsatisfactory conditions have been corrected.

3.02 PREPARATION

A. Coordinate framing setting drawings, diagrams, templates, instructions, and directions for installation of anchorages, such as sleeves, concrete inserts, anchor bolts, and miscellaneous

05 40 00-8 items having integral anchors, that are to be embedded in concrete construction. Coordinate delivery of such items to project site.

B. Apply one coat of bituminous paint to concealed aluminum, steel and stainless-steel surfaces that will be in contact with cementitious or dissimilar materials.

3.03 INSTALLATION

A. General:

1. Install in accordance with manufacturer's instructions anchored securely to supporting construction.

2. Fit screens together to form tight, hairline joints, free from distortion and other defects.

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

a. Do not weld, cut, or abrade surfaces of screen components that have been coated or finished after fabrication and that are intended for field connection by mechanical or other means without further cutting or fitting.

4. Align panel tops so variations from level for horizontal members do not exceed 1/4 inch in 12 feet unless otherwise shown on the Drawings.

5. Corrosion Protection: Coat concealed surfaces of aluminum that will be in contact with concrete or dissimilar metals, with a heavy coat of bituminous paint.

6. Conceal anchor bolts and screws whenever possible; where not concealed, use flush countersunk fastenings.

B. Screen Framing and Panels:

1. Framing: Space supports at spacing indicated on final shop drawings. Plumb supports in each direction.

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2. Panels: Set panels in proper location. Adjust panels prior to anchoring to ensure matching alignment of abutting joints and continuity of patterns, if any.

3.04 INSTALLATION TOLERANCES

A. Maximum Variation from Plumb: 1/4 inch per floor level, noncumulative.

B. Maximum Offset from True Alignment: 1/4 inch.

C. Maximum Out-of-Position: 1/4 inch.

D. Posts: 1/16 inch in 3 feet.

3.05 ADJUSTING

A. Restore finishes damaged during installation and construction period so that no evidence remains of correction work. Return items which cannot be refinished in the field to the shop.

Make required alterations and refinish affected area so that it is indistinguishable from adjacent undamaged areas. Provide new components where finishes cannot be restored to undamaged condition.

3.06 PROTECTION

A. Protect finishes of fence components from damage during construction period with temporary protective coverings approved by screen manufacturer. Remove protective coverings at time of

Substantial Completion.

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