Attachment 4 - SECTION 12 24 00 Window Shades.pdf

Design Social Work and Expand Clinical Space Mather, CA Project Number 612-163 December 04, 2020

VA 08-01-17

12 24 00 - 1

SECTION 12 24 00

WINDOW SHADES

PART 1 - GENERAL

1.1 DESCRIPTION:

A. This section includes venetian blinds. Provide window shades complete, including brackets, fittings and hardware.

1.2 RELATED WORK:

NOT USED

1.3 QUALITY ASSURANCE:

A. Manufacturer's Qualification: Submit evidence that the manufacture has a minimum of three (3) years’ experience in providing item of type specified, and that the blinds have performed satisfactorily on similar installations. Submit qualifications.

B. Submit qualifications for installers who are trained and approved by manufacturer for installation of units provided.

C. Electrical Requirements:

1. NFPA 70 Article 100.

2. Listed and labeled in accordance with UL 325.

3. Marked for intended use, and tested as a system.

4. Individual testing of components is not acceptable in lieu of system testing.

1.4 SUBMITTALS:

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

SAMPLES.

B. Samples:

1. Venetian blind slats, 305 mm (12 inches) long, including cord and tape, showing color and finish.

C. Manufacturer's literature and data; showing details of construction and hardware for:

Venetian blinds

D. Manufacturer’s warranty.

1.5 WARRANTY:

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

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B. Manufacturer Warranty: Manufacturer shall warranty their window shades for a minimum of five

(5) years from date of installation and final acceptance by the Government. Submit manufacturer’s warranty.

1.6 APPLICABLE PUBLICATIONS:

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

B. Federal Specifications (Fed. Spec.):

AA-V-00200B ........................... Venetian Blinds, Shade, Roller, Window, Roller, Slat, Cord, and

Accessories

C. ASTM International (ASTM):

B221-14 ..................................... Aluminum-Alloy Extruded Bars, Rods, Wire, Shapes, and Tubes

B221M-13 .................................. Aluminum-Alloy Extruded Bars, Rods, Wire, Shapes, and Tubes

(Metric)

G21-13 ....................................... Determining Resistance of Synthetic Polymeric Materials to

Fungi

D. National Electric Manufacturer’s Association (NEMA):

ICS 6-93(R2006) ........................ Industrial Control and Systems Closures

E. National Fire Protection Association (NFPA):

70-14 .......................................... National Electrical Code (NEC)

701-15 ........................................ Fire Tests for Flame Propagation of Textiles and Films

F. Underwriters Laboratories Inc. (UL):

325-06(R2013) ........................... Door, Drapery, Gate, Louver, and Window Operators and

Systems

PART 2 - PRODUCTS

2.1 VENETIAN BLINDS:

A. Fed. Spec. AA-V-00200B, Type II, 25 mm (1 inch slats) fabricated of aluminum. Pre-production sample is not required.

B. Manual Lift-Operator and Tilt-Operator Locations: Manufacturer’s standard Right side of headrail.

2.2 MATERIALS:

B. Extruded Aluminum: ASTM B221M (B221).

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C. Cords for Venetian Blinds #10 stainless steel chain having not less than 80 kg (175 pounds) breaking strength. Rods are acceptable, as well as removable wands.

2.3 FASTENINGS:

A. Zinc-coated or cadmium plated steel or stainless steel fastenings of length and type recommended by manufacturer. Except as otherwise specified, provide fastenings for installation with various structural materials as follows:

Type of Fastening Structural Material

Wood screw Wood

Tap screw Metal

Case-hardened, self-tapping screw in pre-drilled hole

Solid masonry, concrete

Screw or bolt in expansion shields

Solid masonry, concrete

Toggle bolts Hollow blocks, gypsum wallboard, plaster

2.4 FABRICATION:

A. Fabricate venetian blinds to fit measurements of finished openings obtained at site (GC to field verify prior to ordering).

B. Venetian Blinds: Provide venetian blinds with 25 mm (1 inch) width horizontal slats positioned within ladder tapes. Provide multiple blinds of same type in openings and divided at mullions.

1. Provide head-rails that enclose operating mechanism on three sides and ends.

2. Provide enclosed bottom rails that prevent contact of tapes and sill at underside.

3. In lobbies, provide aluminum bottom rails and head boxes.

4. Finish concealed metal work of head-rails including concealed mechanism, to match window finish. Do not paint parts that have non-rusting finish, or parts where motion of friction occurs.

PART 3 - EXECUTION

3.1 INSTALLATION:

A. Measure openings before fabrication. Do not scale construction documents.

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B. Venetian Blinds: Support blinds in level position by brackets and intermediate supports that -permit easy removal and replacement of units without damage to blind, or adjacent surfaces.

Provide at least two (2) fasteners for each bracket or other support.

1. Install blinds between jambs on window openings with steel trim, or per manufacturer’s instructions. Mount brackets on trim reveal, flush with face of trim and secure with steel screws.

2. Install blinds between jambs on window openings with wood trim. Mount brackets on trim or on wood plaster-mold set against plaster or other wall finish, and secure in place.

3. Mount brackets and intermediate supports of lobby blinds on face of trim members, and secure with stainless steel standard tap or thread-forming machine screws, or by cadmium-plated molly or toggle bolts. Penetrate screws and bolts through, and lock behind steel sub-frame.

4. Where blinds abut glass partitions of vestibules, extend head rails to trim at head of partition frame with slats sufficiently long to clear transom bars.

5. Furnish one (1) brush of an approved type for every 50 blinds provided, suitable for cleaning blinds.

3.2 ADJUSTING:

A. Adjust shades to operate smoothly, free from binding or malfunction throughout entire operational range.

3.3 CLEANING AND PROTECTION:

A. Clean shade surfaces after installation, according to manufacturer’s written instructions.

B. Provide final protection and maintain conditions that ensure that shades are without damage or deterioration at time of Substantial Completion.

C. Replace damaged shades that cannot be repaired, in a manner approved by COR before time of

Substantial Completion.

D. Keep blinds fully raised and closed during any construction activity that will cause dust.

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