blocks, and anchors.
2.9.4
Track Hopper
**************************************************************************
NOTE: Determine when a track hopper will be
required.
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Welded construction of not less than 6 mm 1/4 inch thick [410 stainless
steel] [structurally reinforced steel plate lined with 8 gage (4.18 mm
0.1644 inch) 410 stainless steel] plate not less than 4 1/4 meters 14 feet
wide and 8 1/2 meters 28 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.
2.9.4.1
Track Girders
Two wide flanged beams designed for Cooper's E-[_____] loading with 50
percent impact allowance and sized at W [_____] x [_____]. Provide beams
with cross struts for rigidity and bearing plates for mounting on pit wall
as indicated.
2.9.4.2
Grating
Hopper grating between rails of [_____] by 10 mm 3/8 inch steel bars and
[_____] by 10 mm 3/8 inch steel cross bars with openings [100] [150] by
[100] [150] mm [4] [6] by [4] [6] inches. Grating outside rails shall have
openings 100 by 100 mm 4 by 4 inches and be constructed of same size steel
bars as specified above. Construct grating in removable panels and support
from concrete pit walls and by steel angle supports resting on track
girders.
2.9.4.3
Cover
Structurally reinforced 5 mm 3/16 inch thick raised pattern floor plate.
Cover for portions of hopper outside rails shall be hinged with edges
turned down. Construct cover between rails in easily removable sections
with handles.
2.9.4.4
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 in size along with a dust tight metal slip joint,
constructed of not less than 6 mm 1/4 inch thick [4l0 stainless steel]
[structurally reinforced steel plate lined with 8 gage (4.18 mm0.1644 inch)
410 stainless steel] plate. Slip joint shall be of split construction to
allow for disassembly and replacement. Design slip joint to allow for
necessary flexibility to take care of deflection of hopper outlet due to
varying coal loads and temperature variations without imposing load on
feeder enclosure. Provide rope packing or other resilient gasket material
to make the slip joint completely dust tight.
2.9.5
Truck Hopper
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NOTE: Determine when a truck hopper will be
required.
SECTION 15502N
Page 100
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