590 / 2440
Hydraulic
Excavators
7
Edition 47 7-261
Trenching Production
●
Excavation Volumes
Metric version
Bank m
3
/meter = (Trench end area m
2
)
×
(one m)
Trench volume (Bm
3
/m) =
1
/
2
(A + C)
×
B
Spoil pile volume (Lm
3
/m) = (Bm
3
/m)
×
(1.00 + % Swell)
English version
Bank yd
3
/foot =
(Trench end area ft
2
)
×
(one ft)
___________________________
27
Trench volume (BCY/ft) =
1
/
2
(A + C)
×
B
_____________
27
Spoil pile volume (LCY/ft) = (BCY/ft)
×
(1.00 + % Swell)
The following table provides a general guide to trench
bottom width for various outside diameters of pipe.
Swing
Angle
Angle of
Repose
H = max. reach at
spoil pile ht.
Side Slope
Trench
Spoil Pile
ExcavationVolumes Per Meter or Foot of Trench Length
Pipe Diameter TrenchWidth Pipe Diameter TrenchWidth
mm ft/in m ft/in mm ft/in m ft/in
102
4"
0.49
1'7"
1524
5'0"
2.59
8'6"
152
6"
0.55
1'10"
1676
5'6"
2.80
9'2"
203
8"
0.61
2'0"
1829
6'0"
3.05
10'0"
254
10"
0.70
2'4"
1981
6'6"
3.26
10'8"
305
12"
0.76
2'6"
2134
7'0"
3.47
11'5"
381
15"
0.91
3'0"
2286
7'6"
3.69
12'1"
457
18"
1.03
3'5"
2438
8'0"
3.93
12'11"
533
1'9"
1.16
3'10"
2591
8'6"
4.15
13'7"
610
2'0"
1.25
4'1"
2743
9'0"
4.36
14'4"
686
2'3"
1.37
4'6"
2896
9'6"
4.54
14'11"
838
2'9"
1.58
5'2"
3048
10'0"
4.75
15'7"
914
3'0"
1.70
5'7"
3200
10'6"
4.99
16'5"
1067
3'6"
1.92
6'4"
3353
11'0"
5.21
17'1"
1219
4'0"
2.13
7'0"
3505
11'6"
5.43
17'10"
1372
4'6"
2.38
7'10"
3658
16'2"
5.64
18'6"
NOTE:
Trench widths based on 1.25 Bc + 1.0 where Bc is the outside diameter
of the pipe in feet.
Table courtesy of American Concrete Pipe Association