CONSTRUCTION STANDARD SPECIFICATION

SECTION 11132

[PROJECTION SCREENS]{.underline}

# [GENERAL]{.underline} {#general .SECTION-1}

## Summary {#summary .SECTION1.01}

A.  Section Includes:

    1.  Front-projection screens.

B.  Products Furnished but not Installed Under this Section: Refer to
    the following sections for related work: Drawings and general
    provisions of the Contract, including General and Supplementary
    Conditions and Division 1 Specification Sections, apply to this
    Section.

    1.  Division 6 Section \"Rough Carpentry\" for wood backing for
        recessed screen installation.

    2.  Division 6 Section \"Interior Architectural Woodwork\" for wood
        trim for recessed screen installation.

    3.  Division 16 Sections for electrical service and connections
        including metal device boxes for switches and conduit, where
        required, for low-voltage control wiring.

## References {#references .SECTION1.01}

A.  American Society of Testing and Materials (ASTM)

A6 Specification for General Requirements for Delivery of Rolled Steel
Plates, Shapes, Sheet Piling and Bars for Structural Use

A.  American Welding Society (AWS)

D1.1 Structural Welding Code -- Steel

## DEFINITIONS  {#definitions .SECTION1.01}

B.  Gain of Front-Projection Screens: Ratio of light reflected from
    screen material to that reflected perpendicularly from a magnesium
    carbonate surface as determined per SMPTE RP 9

## SUBMITTALS {#submittals .SECTION1.01}

A.  Product Data: For each type of screen indicated

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C.  Shop Drawings:

    1.  Location of screen centerline relative to ends of screen case.

    2.  Location of wiring connections.

    3.  Drop length.

    4.  Connections to supporting structure for pendant- and
        recess-mounted screens.

    5.  Anchorage details.

    6.  Wiring Diagrams: For electrically operated units.

D.  Maintenance Data:

## QUALITY ASSURANCE {#quality-assurance .SECTION1.01}

E.  Source Limitations: Obtain projection screens through one source
    from a single manufacturer. Obtain each screen as a complete unit,
    including necessary mounting hardware and accessories. Retain
    paragraph below if electrically operated projection screens are
    used.

F.  Electrical Components, Devices, and Accessories: Listed and labeled
    as defined in NFPA 70, Article 100, by a nationally recognized
    testing agency acceptable to the authority having jurisdiction, and
    marked for intended use.

## DELIVERY, STORAGE, AND HANDLING {#delivery-storage-and-handling .SECTION1.01}

G.  Do not deliver projection screens until building is enclosed and
    other construction within spaces where screens will be installed is
    substantially complete and ready for screen installation.

## WARRANTY {#warranty .SECTION1.01}

H.  Manufacturer standard form which the manufacturer agrees to repair
    or replace any part that fails to perform for a period of five (5)
    years.

# [PRODUCTS]{.underline} {#products .SECTION-1}

## MANUFACTURERS {#manufacturers .SECTION1.01}

Subject to compliance with requirements, manufacturers offering products
that may be incorporated in the work include but are not limited to the
following:

I.  Manually Operated Screens, General: Manufacturer\'s standard
    spring-roller-operated units, consisting of case, screen, mounting
    accessories, and other components necessary for a complete
    installation.

    1.  Screen Mounting: Top edge securely anchored to a 3-inch-
        (75-mm-) diameter, rigid steel roller; bottom edge formed into a
        pocket holding a tubular metal slat, with ends of slat protected
        by plastic caps, and with a saddle and pull attached to slat by
        screws.

J.  Electrically Operated Screens, General: Manufacturer\'s standard
    units consisting of case, screen, motor, controls, mounting
    accessories, and other components necessary for a complete
    installation. Provide units that are listed and labeled as an
    assembly by UL or another testing and inspecting agency acceptable
    to authorities having jurisdiction.

    1.  Line Voltage Control: Remote, 3-position control switch
        installed in recessed metal device box with flush cover plate.

    2.  End-Mounted Motor: Instant-reversing, gear-drive motor of size
        and capacity recommended by screen manufacturer; with
        permanently lubricated ball bearings, automatic thermal-overload
        protection, preset limit switches to automatically stop screen
        in up and down positions, and positive-stop action to prevent
        coasting. Locate motor in its own compartment as follows:

        a.  Screen Mounting: Top edge securely anchored to rigid metal
            roller and bottom edge formed into a pocket holding a
            3/8-inch- (9.5-mm-) diameter metal rod with ends of rod
            protected by plastic caps.

        b.  Roller for end-mounted motor supported by self-aligning
            bearings in brackets.

K.  Recessed, Electrically Operated Screens without Ceiling Closure:
    End-mounted motor units with bottom of case entirely or partially
    open under screen compartment.

    1.  Screens below have end-mounted motor.

        a.  Da-Lite Screen Co., Inc.; Senior Electrol.

        b.  Draper Inc.; Rolleramic.

        c.  Da-Lite Screen Co., Inc.; Advantage

    2.  Provide metal or metal-lined motor enclosure on units with
        end-mounted motor.

    3.  Provide metal or metal-lined wiring compartment on units with
        motor in roller.

        a.  Screen Case: Made from metal and fire-retardant materials.

        b.  Provide screen case constructed to be installed with
            underside flush with ceiling.

        c.  Prime paint surfaces of screen case that will be exposed to
            view in the finished work.

## MATERIALS {#materials .SECTION1.01}

L.  Screen Material and Viewing Surface:

    1.Matte-White Viewing Surface: Peak gain of 0.9 to 1.0, and gain of
    not less than 0.8 at an angle of 50 degrees from the axis of the
    screen surface.

    a.  Products: Da-Lite Screen Co., Inc.; Matte White.

    b.  Draper Inc. Fiberglass Matte White.

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    1.  Material: Vinyl-coated glass-fiber fabric.

    2.  Mildew Resistance: Rating of 0 or 1 when tested according to
        ASTM G 21.

    3.  Flame Resistance: Passes NFPA 701.

    4.  Flame-Spread Index: Not greater than 75 when tested according to
        ASTM E 84.

    5.  Seamless Construction: Provide screens, in sizes indicated,
        without seams.

    6.  Edge Treatment: Black masking borders

    7.  Provide extra drop length of dimension indicated to comply with
        the following requirements for fabric color and location of drop
        length:

        a.  Color: Black.

        b.  Location: At top of screen.

    8.  Size. (3x4 format, not square)

        a.  Minimum Standard: 5' x 7' nominal.

        b.  Maximum Standard: 8' x 10' nominal

        c.  Other sizes as required by size of the conference room or
            auditorium.

# [EXECUTION]{.underline} {#execution .SECTION-1}

1.  INSTALLATION

    A.  General: Install projection screens at locations indicated to
        comply with screen manufacturer\'s written instructions.

        1.  Install front-projection screens with screen cases in
            position and in relation to adjoining construction
            indicated. Securely anchor to supporting substrate in a
            manner that produces a smoothly operating screen with
            vertical edges plumb and viewing surface flat when screen is
            lowered.

        2.  Install low-voltage controls according to NFPA 70 and
            manufacturer\'s written instructions.

            a.  Wiring Method: Install wiring in raceway except in
                accessible ceiling spaces and in gypsum board partitions
                where unenclosed wiring method may be used. Use
                UL-listed plenum cable or MC cable in environmental air
                spaces, including plenum ceilings. Conceal raceway and
                cables except in unfinished spaces.

            b.  Test electrically operated units to verify that screen
                controls, limit switches, closure, and other operating
                components are in optimum functioning condition.

            c.  Test manually operated units to verify that screen
                operating components are in optimum functioning
                condition.

            d.  At top edge and allow for expansion and contraction of
                plastic glazing material by providing frame with
                adequate bite and edge clearances.

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2.  PROTECTING AND CLEANING

    1.  After installation, protect projection screens from damage
        during construction. If damage occurs despite such protection,
        remove and replace damaged components or entire unit as required
        to provide units in their original, undamaged condition.

END OF SECTION