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EARTHWORK 2024|2025 EXAM 1|2 QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ASNWERS) GRADED A++
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EARTHWORK 2024|2025 EXAM 1|2 QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ASNWERS) GRADED A++
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EARTHWORK 2024|2025 EXAM 1|2QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED
ASNWERS) GRADED A++
((EA + EA)/2) x (L/27) - correct answers station cross section
problem
horizontal distance of 100 ft - correct answers station
horizontal alignment - correct answers plan view
vertical plane cut through the centerline of the work - correct answers
profile view
vertical section at right angles to the centerline of the work - correct
answers cross section view
removing upper layer of amterial before excavation - correct answers
stripping
natural undisturbed in place soil or rock - correct answers in situ
soil having strong interparticle attractive forces - correct answers
cohesive material
,capability of being molded - correct answers plasticity
volume reduction usually occurring when soils or rock are subjected
to moisture or mechanical compaction - correct answers shrinkage
a volume increase occuring when soils or rocks are excavated and
loosened from the earths crust - correct answers swell
gravel, sand, clay, silt, and organic matter - correct answers five
major types of soil
the water content at which a soil passes from the plastic to the liquid
state. High LL values are soils with high compressibility - correct
answers liquid limit
amount of water required for a given soil to reach maximum density -
correct answers optimum water content
R.R. procotor developed to determine moisture-density relationship in
soils subjected to compaction. standard test 5.5lb rammer, 12 in drop,
3 layers. Modified test 10lb rammer, 18 in drop, 5 layers. - correct
answers proctor test
aerate or add a soil stabilization agent. Lime or fly ash is for fine-
grained soils. Mechanically it can be done by scarifying the soil with
a grader - correct answers drying out wet soil
, were developed to serve as reference points in order to differentiate
between highly plastic, slightly plastic, and nonplastic materials -
correct answers soil limits
ccy dry weight / bcy dry weight - correct answers shrinkage factor
silts and clays, low and high plasticity - correct answers fine grained
soils
loose surface of earths crust, created naturally from the disintegration
of rocks or decays of vegetation - correct answers soil
volumetric= capacity in terms of cubic ayrds
gravimetric = capacity based on safe operating weight - correct
answers Payload
Total resistance = Rolling resistance + Grade Resistance - correct
answers required power
wheel resistance = vehicle weight in tons x rolling resistance
track resistance = vehicle weight in tons x (rolling resistance -
110lbs/ton) - correct answers rolling resistance
subtraction of rolling resistance in drawbar pull. 110lbs/ton - correct
answers nebraska test
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