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• loading points to train the material into the receiving belt for a <br />distance equal to 2 feet per 100 fpm of belt speed from the end of the <br />discharge chute. Skirtboards are constructed of 1/4-inch steel plate <br />and covered with a 1/8-inch cover plate to contain dust. Liners are <br />wear resistant steel plates. An adjustable 1/2-inch thick rubber <br />sealing strip is used to prevent spillage and to minimize wedging of <br />conveyed material between the skirt boa rd and the conveyor belt, A <br />rubber curtain is provided at the inlet of the chute and at the outlet <br />of the skirt boards, and a hinged door is accessible for clean-u p. <br />A totally enclosed, positive action backstop is used to prevent rever- <br />sal or rollback of the conveyor, while the conveyor will shut down due <br />to belt slippage or misalignment, a plugged chute, or emergency stops <br />from pull switches. <br />A freeze protection spray system will spray the coal with a freeze <br />conditioning agent at the loadout surge bin to protect it from <br />• freezing. Two spray headers are mounted at the front and back of the <br />falling coal stream. <br />(3) Loadout Control Building <br />Details of the loadout control building are shown on Drawing D-2-2. <br />The loadout building is of steel frame construction. The foundation <br />is a reinforced concrete, spread footing design with a concrete floor <br />slab sloped for drainage to a sump pit. Access stairs are provided to <br />the top of the building. The building is enclosed, except for train <br />clearances, with uninsulated siding. <br />The loadout building is furnished with a gate and loading chute. The <br />slide gate is hydraulically operated, complete with double-acting <br />blade, hydraulic cylinder, and fail-safe accumulator circuit. The <br />direction of the blade travel is perpendicular to the track, and the <br />• <br />4-31 <br />