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OPERATOR’S SIDE WINDOW
sliding type that opens sufficiently to permit the seated operator to easily adjust the street side outside side view mirror. The sliding window section shall slide rearward in tracks or channels designed to last the service life of the bus. When in an open position, the window shall not rattle or close during braking or acceleration. The operator’s side window shall not be bonded in place Glazing materials shall be strictly conforming to applicable sections of FMVSS 205 and ANSI Z26. 1 – 1997, Test Grouping 2 and the Recommended Practices defined in SAE J673. The Maximum permissible light transmittance of the sliding section shall be and the maximum permissible solar energy transmittance shall be as measured by ASTM-424. The maximum permissible light transmittance of the upper fixed section shall be and the maximum permissible solar energy transmittance shall be as measured by ASTM-424.
All side windows except windows in passenger doors and those smaller than 500 square inches, shall The destination sign window shall be a fixed over fixed design. Side windows shall be mounted in the bus structure so that flexing or vibration from engine operation or normal road excitation is minimized.
Emergency escape windows shall be design and open for emergency escape by means of a durable, heavy-duty cast aluminum handle assembly located on one side of the window and below the window centerline, a metal plate with operating instructions clearly marked and imprinted is to be securely installed adjacent to or on each emergency egress window assembly. The window construction shall be designed using a "Water Management" system that incorporates a visible indirect water drainage system to the exterior of the window and will prevent the entrance or backup of water into the bus interior or sidewall. Drains of sufficient size shall be used at the bottom of each sash that allows drainage of interior condensation to the exterior of the bus. The window manufacturer shall perform a water test that assures the "Water Management System" is functioning properly and is equal to or greater than the following parameters: 12 gallons of water/minute @ 40 psi with multiple strategically placed nozzles for duration of 10 minutes.
Seals: The window seal rubber and/or sash frame mounting rubber must be designed using UV stable material made from EPDM closed cell foam to prevent shrinkage and deterioration as well as water leakage. The window bus structure exterior seal shall be an EPDM closed cell foam to ensure maximum seal capacity.
Frames: Window assemblies shall be constructed using 6063-T4 and 6063-T6 aluminum as required for high strength components or suitable composite materials; all materials must be chemically compatible with the window frame and the bus body. Unless otherwise specified aluminum materials used to construct window frames shall be hard anodized per Aluminum Association AA-C22-A21 with hard coat additive. All fasteners and brackets required in the assembly of the window frame shall be stainless steel. Whenever possible, window elements not designed for disassembly shall be bonded together to reduce the potential for vandalism and enhance durability. Such bonding must be stronger than the fasteners it replaces.
Glazing: Glazing materials shall be strictly conforming to applicable sections of FMVSS 205 and ANSI Z26. 1 – 1997. Glazing color shall be consistent from window to window. The maximum permissible light transmittance (or luminous transmittance) shall be and the maximum permissible solar energy transmittance shall be as measured by ASTM-424, except for the upper destination sign glazing, which shall be clear.
Window Guards/Graffiti Protection: All side window assemblies shall be designed to accommodate all available graffiti protection options.
Warranty: All Window assemblies including frames, rubber seals, and glass shall be warranted covering the integrity and deterioration or delamantion of the glazing for a period of two years, in normal city service. Warranties shall cover all material, labor and workmanship, excluding damage caused by vandalism, bus accidents, poor care and maintenance.
DOT and Manufacturer Identification: Each glazing component and or window guard shall have the manufactures Department of Transportation (DOT) registered identification "bug" permanently applied according to the DOT requirement, the "bug" shall include the date (month and year) of manufacture applied in the same location.