122400 Window Shades.pdf

OKC Renovate B Mod for PACT Project Number 635-19-101

RFI #1 1.24.22

VA 05-01-20

12 24 00 ‐ 1

SECTION 12 24 00

WINDOW SHADES

PART 1 ‐ GENERAL

1.1 DESCRIPTION:

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

1.2 RELATED WORK:

A. Color of shade cloth and color of exposed parts of shade, (including tapes and cords): Section 09

06 00, SCHEDULE FOR FINISHES.

1.3 QUALITY ASSURANCE:

A. Manufacturer's Qualification: Submit evidence that the manufacturer has a minimum of three

(3) years’ experience in providing item of type specified, and that the blinds have performed satisfactorily on similar installations.

1.4 SUBMITTALS:

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

B. Samples:

1.Shade cloth, each type, 610 mm (24 inch) square, including cord and ring, showing color, finish and texture.

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

Cloth and window shades

1.5 WARRANTY:

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

12 24 00 ‐ 2

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):

A240/A240M‐14 ........................ Chromium and Chromium‐Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications

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

12 24 00 ‐ 3

PART 2 ‐ PRODUCTS

2.1 CLOTH SHADES:

A. Light‐Filtering Shade Cloth: Woven fabric, stain and fade resistant. Refer to 09 60 00 Schedule of finishes for type.

2.5 MATERIALS:

A. Stainless Steel: ASTM A240/A240M.

B. Extruded Aluminum: ASTM B221M (B221).

C. Cords for Cloth roller shades : No. 4 braided nylon or No. 4‐1/2 braided cotton or #10 stainless steel chain having not less than 80 kg (175 pounds) breaking strength.

2.6

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

12 24 00 ‐ 4

2.7 FABRICATION:

A. Fabricate cloth shades to fit measurements of finished openings obtained at site.

B. Cloth Shades: Rolling type, constructed of shade cloth mounted on rollers. Provide shade cloth with plain sides, and with hem at bottom to accommodate weight bar.

1. Provide separate shades for each individual sash within opening. Provide shade length that exceeds height of window by 305 mm (12 inches) measured from head to sill, in addition to material required to make‐up hem:

a. Provide rollers with spindles, nylon bearings, tempered steel springs, and other related accessories required for positive action.

b. Secure shade cloth to rollers to prevent wrinkling or folding, and on line parallel to axis of rollers so that shade hangs plumb.

c. Secure shade cloth with zinc‐coated steel or stainless-steel machine screws spaced not over 228 mm (9 inches) on centers.

d. Do not attach shade cloth to rollers with tacks.

e. Provide hem bar of extruded aluminum for entire width of shade band. Heat seal hem bar on all sides to prevent removal.

f. Provide eyelets with clear openings large enough to accommodate cords, without cutting into cloth when set.

g. Provide cords of sufficient length to permit shades to be drawn to bottom of opening with ends looped and held with cord rings. Attach cords to hems through metal eyelets in center of slats in bottom hems.

12 24 00 ‐ 5

PART 3 ‐ EXECUTION

3.1 INSTALLATION:

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

B. Cloth Shades: Mount window shades on end of face brackets, set on metal gussets, or casing of windows as required. Provide extension face brackets where necessary at mullions. In existing buildings, provide brackets similar to those on existing windows.

1. Locate rollers in level position as high as practicable at heads of windows.

2. Install shades to prevent infiltration of light over rollers.

3. Where extension brackets are necessary for alignment of shades, provide metal lugs, and rigidly anchor lugs and brackets.

4. Place brackets and rollers so that shades do not interfere with window and screen hardware.

5. Shade installation methods not specifically described, are subject to approval of

Contracting Officer Representative (COR).

3.2 ADJUSTING:

A. Adjust and 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.

12 24 00 ‐ 6

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

Substantial Completion.

‐ ‐ ‐ E N D ‐ ‐ ‐

‐ ‐ ‐ E N D ‐ ‐ ‐