Page 208 - Estimators Piping Man Hour Manual

Section Five—UNDERGROUND PIPING 191

MACHINE EXCAVATION

NET MAN HOURS PER 100 CUBIC YARDS
LIGHT SOIL MEDIUM SOIL HEAVY SOIL
Op. Op. Op.
EQUIPMENT Engr. Oiler Labor Engr. Oiler Labor Engr. Oiler Labor
Power Shovel
1 cubic yard Dipper 1.1 1.1 1.1 2.0 2.0 2.0 2.7 2.7 2.1
3/4 cubic yard Dipper 1.5 1.5 1.5 2.8 2.8 2.8 3.7 3.7 3.7
1/2 cubic yard Dipper 2.0 2.0 2.0 4.0
Backhoe
1 cubic yard Bucket 1.4 1.4 1.4 2.6 2.8 2.6 3.5 3.5 3.5
3/4 Cubic yard Bucket 1.5 1.5 1.5 3.8 3.S 3.8 3.7 3.7 3.7
1/2 cubic yard Bucket 2.0 2.0 2.0 3.7 3.7 3.7 4.9 4.9 4.9
Dragline
2 cubic yard Bucket 0.1 0.7 0.7 1.3 1.3 1.3 1.7 1.7 1.7
1 cubic yard Bucket 1.1 1.1 1.1 2.0 2.0 2.0 2.7 2.7 2.7
1/2 cubic yard Bucket 2.0 2.0 2.0 3.7 3.7 3.7 4.9 4.9 4.9
Trenching Machine 3.8 7.5 4.8 -- 9.4
— — — —
NET MAN HOURS PER 100 CUBIC YARDS
HARD PAN ROCK
Op. Op.
EQUIPMENT Engr. Oiler Labor Engr. Oiler Labor
Power Shovel
1 cubic yard Dipper 3.4 3.4 3.4 3.4 3.4 3.4
3/4 cubic yard Dipper 4.6 4.6 4.6 4.6 4.6 4.8
1/2 cubic yard Dipper 6.1 6.1 6.1 6.1 6.1 6.1
Backhoe
1 cubic yard Bucket 4.4 4.4 4.4 4.4 4.4 4.4
3/4 cubic yard Bucket 4.6 4.6 4.6 4.6 4.6 4.6
1/2 cubic yard Bucket 6.1 6.1 6.1 6.1 6.1 6.1

Man hours are for operational procedures only and do not include equipment rental or depre-
ciation. This must be added in all cases.
Operation includes excavation and dumping on side line or into trucks for hauling but does not
include hauling. See pages on hauling for this charge.
For excavations greater than 5*6" add 25% to above man hours.