TM 9-2320-272-10
2-25.
OPERATION OF DUMP TRUCKS
a.
Payload Capacities. M929/A1/A2 and M930/A1/A2 dump trucks can carry 10, 000 lb (4, 540 kg) of material
cross-country. Table 2-5 lists typical material weights.
WARNING
Stay clear of dump body and cab protector at all times during loading and unloading operations. Dump
body can unexpectedly raise when a heavy load is dropped into dump body and will cause injury or death.
Table 2-5. Typical Material Weights.
Capacity level
Capacity Heaping
full 5.0 cu-yd full 7.5 cu-yd
MATERIAL WEIGHT
(3.8 cu-M)
(5.7 cu-M)
lb per cu-ft
lb per cu-ydlb (approx)
lb (approx)
(kg per cu-M) (kg)
(kg)
Ashes
43
1,161
5, 805
8, 708
(1,518.5) (2, 635.5)
(3, 953.4)
Cinders
46
1,242
6, 210
9, 315
(1,624.4) (2, 819.3)
(4, 229.0)
Clay (dry and loose)
77
2,079
10, 395
15, 593
(2,719.1) (4, 719.3)
(7, 079.2)
Clay (wet)
110
2,970
14, 850
22, 275
(3, 884.5)(6, 741.9)
(10, 113.0)
Clay and gravel (dry)
100
2,700
13, 500
20, 250
(3, 513.3)(6, 129.0)
(9, 193.5)
Clay and gravel (wet)
65
1,755
8, 775
13, 163
(2,295.4) (3, 983.4)
(5, 976.0)
Coal, anthracite
54
1,458
7, 290
10, 935
(hard)
(1, 906.9)
(3, 309.7)
(4, 964.5)
Coal, bituminous
81
2, 187
10, 935
16, 403
(soft)
(2, 860.4)
(4, 964.5)
(7, 447.0)
Coke
28
756 3, 780
5, 670
(988.8)
(1, 716.1)
(2, 587.2)
Concrete 138 3, 726
18, 630
27, 945
(4, 873.2)(8, 58.0)
(12, 678.2)
Concrete mix (wet) 124
3, 348
16, 740
25, 110
(4, 379.1)(7, 600.0) (11, 400.1)
Earth (dry and loose)
75
2, 025
10, 125
15, 188
(2, 648.8)(4, 596.8)
(6, 895.4)
Earth (moist and
95
2, 565
12, 825
19, 238
packed)
(3, 345.8)
(5, 822.6)
(8, 734.1)
*
Over rated cross-country payload
† Over rated cross-country and highway payload
2-146
