ST. VINCENTCOLLEGE
SIS AND HERMAN DUPRÉ SCIENCE PAVILION
SECTION 12 21 26 - LIGHTPROOF SHADES
PART 1 - GENERAL
1.01RELATED DOCUMENTS
A.Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1 Specification Sections, apply to this Section.
1.02SECTION INCLUDES
A.Lightproof window shades; designed for total light exclusion.
B.Custom fabricated to fit each window, door and sidelite indicated to receive lightproof shades.
C. Location of lightproof shades include bit are not limited to:
1.Modern Physics lab 101
2.General Physics Lab 155
3.Physical Chemistry Research 266
1.03SUBMITTALS
A.Product data and installation instructions for each type of lightproof window shade required. Include methods of installation for each kind of opening and supporting structure.
B.Shop drawings for special components and application conditions that are not fully dimensioned or detailed in manufacturers' product data. Show relationships to adjoining work.
1.Include typical elevation layout indicating proposed division between shade units. Provide sections and details at head, jamb, and sill for window shades.
C.Provide schedule of all units to be furnished, including field measurements at each location.
D.Samples for initial selection of colors, in form of manufacturers' color charts consisting of sections of exposed components with integral or applied finishes showing full range of colors and materials. For verification, submit sample of window shade color selected.
PART 2 - PRODUCTS
2.01MANUFACTURERS
A.Darko "Imperial Lightproof Shade" as distributed by Caldwell's Windoware, Inc., Pittsburgh, PA.
B.Draper 800-238-7999
C.Mecho Shades 718-729-2020
2.02MATERIALS
A.General: The shade frame shall consist of a housing, side channels, sill channel and bottom rail accurately formed of heavy gauge sheet steel. All edges contacting the shade cloth shall be fully hemmed. The shade, a fire-resistant vinyl coated fiberglass fabric, shall be mounted on a metal roller and be provided with stiffening braces.
B.Housing: The housing shall be 2-1/2 inches to 3-1/2 inches (64-89mm) square, depending on the overall size of the shade. Light locks, welded to both ends of the housing, shall form an adjustable light seal with the guides.
C.Side Channels: The side channels shall be 3 inches to 5 inches(76-127mm) deep, depending on the width of the shade, and have only sufficient opening for the free travel of the shade. The top of the side channels shall be screwed to the light locks and the lower ends shall be fitted into the sill channel to form positive and rigid lightproof junctions between all shade frame parts.
D.Sill Channel: The sill channel, only 1 inch(25.4mm) high, shall extend across the bottom of the entire opening width and shall engage the bottom rail.
E.Bottom Rail: The bottom rail shall completely encase the bottom edge of the shade cloth. Spring locks shall be attached to both ends of the rail to automatically engage under the lock lugs when the shade is lowered. A draw cord shall be attached to the center of the rail.
F.Cloth: The lightproof shade cloth shall consist of a fiberglass fabric coated on one side with flame-resistant, self-extinguishing black vinyl and on the other side with flame-resistant light grey to a minimum finished weight of 10 ounces per square yard. The cloth shall be opaque, durable, crack and fade proof and remain soft and pliable under varying whether conditions.
G.Roller: The all metal roller with self-lubricating bearings shall be no less than 1-1/2 inches(38mm) in diameter and encase an operating spring, which shall be coiled from music wire to proper gauge, temper and length to easily raise and lower the shade.
H.Stiffening Braces: Solid oval steel stiffening braces shall be riveted through the cloth not over 30 inches(762mm) apart to insure retention of the cloth in the side channels.
I.Finish: Exposed metal surfaces as the inside of the housing, side channels and sill channel shall be factory finished in custom color as selected by Architect.
I.Finish: Exposed metal surfaces and the inside of the housing, side channels, and sill channel shall be finished in black.
PART 3 - EXECUTION
3.01INSTALLATION
A.Install blinds in accordance with manufacturer's installation procedures except as otherwise specified herein.
B.Installation: Each shade shall be installed in the best workmanlike manner complete with necessary fittings, ready for operation. All light leaks between shade and window frame shall be sealed with a washable sealant approved by the Architect.
C.At completion each shade must exclude all light and shall pass a test so that when looking at the shade from any angle no light leakage shall be discernible, either from the inside on a bright sunlit day or from the outside on a dark night with the interior fully illuminated.
D.Demonstrate shades to operate in a smooth, uniform manner.
END OF SECTION
LIGHTPROOF SHADES
12 21 26 - 1(45307035)