Keesler_AFB_Airfield_Control_Tower_Shades_Specifications.pdf

Keesler AFB Air Field Tower Shades Specifications

Specifications-All items quotes must meet current FAA Guidance:

(1) Shades shall be of dark, heavy duty, F72 SR material by Plastic-View, Simi Valley, CA or

FAA approved equal. Surface tinting and/or color adhesives will not be accepted as equal without independent reports qualifying the color stability in comparison with the vat dyed process.

(2) Ultraviolet Transmission: The shade shall transmit no more than 2 percent of the ultraviolet solar energy (from 800 to 780 nanometers) when measured by Association of Industrial metalizers, Coaters & Laminators (AIMCAL) standard methods.

(3) Visible Light Transmission: The shade shall transmit no more than 4 percent of the visible solar energy (from 380 to 780 nanometers) when measured by Association of Industrial metalizers, Coaters & Laminators (AIMCAL) standard methods.

(4) Total Solar Energy Rejected: The shade shall reject 60.5 percent of the total solar energy transmitted (from 360 to 2100 nanometers) when measured by Association of Industrial metalizers, Coaters & Laminators (AIMCAL) standard methods:

a) Solar Absorptions: 61 percent

b) Shading Coefficient: 0.45

c) Solar Heat Gain Coefficient: 0.40

(5) Bottom Bar (K-Bar): Shades shall have a flat 1-inch by ½-inch dull black, full width metal hemline bar, minimum 26-gauge, at bottom onto which the pull cord and shade are attached.

Black plastic end caps shall be provided on each end of the hemline bar to cover any sharp exposed edges.

(6) Shade Cords: Cords shall be colored black and of sufficient length to route around equipment to cord lock positions wherever required. The cords shall be 9/64 inch diameter rope made of

4.5 Duro Nylon and shall be attached underneath the center of the bottom of the hemline bar.

(7) Shade Roller: Shades shall be mounted on 1 ¾-inch diameter metal wrapped rollers. The rollers shall be spring loaded, single piece barrel, with a reusable safety cotter key type retainer installed through both endpins and washers to prevent roller from falling out of mounting brackets. Constant tension in shade is required.

(8) Mounting brackets will have a 2 ¼ inch resting ledge. Standard ceiling brackets are not acceptable. A label stating “This End Down” with an arrow pointing in the proper installation directions of the roller into the mounting brackets shall be placed on the spring motor end of each shade roller. The shade film laminate material shall be mounted on rollers to minimize ridgings. Roll-off direction of material from roller shall be as directed by the shade manufacturer for use in the Tower cab.

(9) Shade Labels: Each shade shall have two manufacturer's labels attached to the metal bar hemline giving cleaning instructions and the telephone number for emergency service.

(10) Lock Pulleys shall consist of a roller and a spring return side action earn cord grip.

(11) Shade Size: Shade roller tip-to-tip width shall be to within ½-inch of maximum possible width as determined by physical limitations. Shade material width with shade fully drawn shall be to within 1 inch of columns on bias cut sides and to within 1 ¾-inch of columns on vertical cut sides. Horizontal seam shall be located a minimum of 70 inches from the bottom of the shade. Shades in ATCT cab shall be bias cut to conform to shape of the windows. To ensure a safe roll-up a minimum of 15 inches of shade material shall remain on the roller when the shade is fully extended.

(12) Measuring for Shades: Measuring for shades and positioning shall be strictly in accordance with the shade manufacturer's instructions. Marks showing the precise position of all brackets, pulleys, and metal hemline positions as related to the factory measuring instructions shall be provided. All measurements shall be taken per instructions from shade manufacturer. The mesurements required are located in Attachment 1 of this document

Attachments:

Attachment 1: Keesler AFB Air Traffic Control Tower window measurements