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Welded construction of not less than 6 mm 1/4 inch thick [4l0 stainless
steel] [structurally reinforced steel plate lined with 8 gage (4.18 mm
0.1644 inch) 410 stainless steel] plate not less than 3 meters 10 feet wide
and 3 meters 10 feet long. Side slopes not less than 60 degrees from
horizontal. Interior bolts shall have flat heads. Support hopper from
concrete pit walls as indicated.
2.9.5.1
Grating
Hopper grating shall have openings 90 by 90 mm 3 1/2 by 3 1/2 inches.
Construct grating of 125 by 13 mm 5 by 1/2 inch steel bars and 25 by 10 mm
one by 3/8 inch steel cross bars. Weld grating and make in sections for
ease of removal. Provide two intermediate support beams sized not less
than W8 x 31 arranged for a maximum grating span of 1016 mm 3 feet 4 inches.
2.9.5.2
Hopper Outlet
Flanged not less than [_____] by [_____] mm inches. Outlet shall contain a
water-collecting reclaim hopper type coal gate not less than [_____] by
[_____] mm inches size.
2.9.5.3
Cover
Structurally reinforced 5 mm 3/16 inch thick raised pattern floor plate.
Construct cover in sections with handles for ease of removal.
2.9.6
Reclaim Hoppers
Welded construction of not less than 6 mm 1/4 inch thick structurally
reinforced steel plate lined with 8 gage (4.18 mm0.1644 inch) 410 stainless
steel plate not less than 3 meters 10 feet wide and 3 meters 10 feet long.
Side slopes not less than 60 degrees from horizontal. Interior bolts shall
have flat heads. Support hopper from concrete pit walls as indicated.
2.9.6.1
Grating
Hopper grating shall have openings 90 by 90 mm 3 1/2 by 3 1/2 inches.
Construct grating of 125 by 13 mm 5 by 1/2 inch steel bars and 25 by 10 mm
one by 3/8 inch steel cross bars. Weld grating and make in sections for
ease of removal. Provide two intermediate support beams sized not less
than W8 x 31 arranged for a maximum grating span of 1016 mm 3 feet 4 inches.
2.9.6.2
Hopper Outlet
Flanged not less than [_____] by [_____] mm inches. Outlet shall contain a
special reclaim hopper gate not less than [_____] by [_____] mm inches.
2.9.6.3
Reclaim Hopper Cover
Structurally reinforced 5 mm 3/16 inch thick raised pattern floor plate.
Construct cover in sections with handles for ease of removal.
2.9.7
Belt Feeder
Totally enclosed, dust tight, approximately [_____] meter feet between
pulley centers, designed to operate at a speed not to exceed [_____] m/s fpm,
and having a capacity of not less than [_____] Mg tons per hour of [_____]
SECTION 15502N
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