In earthwork measurement, what is the difference among bank, loose, and compacted cubic yards?
Earthwork Construction
Question · Easy
Divide by twenty-seven
Short
How many cubic feet are in one cubic yard when converting an excavation volume to cubic yards?
A rectangular cut is 90 feet long, 30 feet wide, and 4 feet deep. What is the bank volume in cubic yards?
Question · Medium
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A utility trench is 270 feet long, 3 feet wide, and 5 feet deep with vertical sides. What is the excavated bank volume?
A cut contains 800 bank cubic yards of common earth that swells 25 percent when excavated. How many loose cubic yards must be hauled?
Question · Hard
A Nevada pad must contain 1000 compacted cubic yards. The borrow shrinks 15 percent from bank to compacted. How many bank cubic yards should be excavated?
A job will haul 1260 loose cubic yards. Each truck legally carries 14 loose cubic yards. How many truck loads are required?
Load factor used in earthmoving production is defined as:
A scraper is rated 18 loose cubic yards heaped. The material has a load factor of 0.80. How many bank cubic yards does one heaped load represent?
Two adjacent cross sections of a roadway cut have end areas of 40 square feet and 60 square feet. The stations are 135 feet apart. Using the average-end-area method, what is the volume?
Why must embankment soil be placed in relatively thin, uniform lifts rather than in one thick dump?
For typical soil embankment on Nevada public-works and NDOT-type grading, loose lift thickness before compaction is most often limited to about:
Optimum moisture content (OMC) is the moisture at which a soil:
Percent compaction of a fill is computed as:
A nuclear gauge reads a field dry density of 118.8 pounds per cubic foot. The laboratory maximum dry density is 132.0 pcf and the specification is 95 percent. What is the result?
Which roller is generally the best first choice for compacting cohesive clay embankment?
Which compaction equipment is generally preferred for clean sand and gravel?
A nuclear density gauge on a Nevada fill reports wet density and moisture. What additional step is required before comparing the result to a Proctor specification?
On a graded pad or roadway, blue tops typically mark:
Crow's-foot marks on a grade hub are used to:
A cut slope is specified at 2:1 (horizontal:vertical). For a 10-foot vertical cut, how far horizontally does the slope occupy?
In U.S. grading practice, a slope written 3:1 without other notation is conventionally:
A crowned dirt or aggregate roadway is graded that way primarily to:
A uniform 2.0 percent grade is held for 250 feet. What is the elevation change?
A site needs 1700 compacted cubic yards of fill. On-site cut will yield 1400 bank cubic yards that shrink 15 percent when compacted. How many additional bank cubic yards of borrow are required if the borrow also shrinks 15 percent?
Before mass excavation or embankment begins on a Nevada site, the contractor should first:
Which material is generally unsuitable for structural embankment without treatment or removal?
Subgrade is best described as:
A clay lift pumps and ruts under the roller. The most likely moisture problem is that the soil is:
A contract requires 850 compacted cubic yards. The borrow shrinks 15 percent from bank to compacted. How many bank cubic yards must be taken from the pit?
Stripped topsoil on a Nevada grading job should usually be:
When new embankment is placed against an existing slope steeper than about 4:1 or 6:1 (as specified), good practice is to:
Compared with the average-end-area method, the prismoidal formula is generally:
Finish grading around a building pad should generally:
The primary purpose of compacting structural fill is to:
How does AASHTO T 180 (Modified Proctor) differ from AASHTO T 99 (Standard Proctor)?
A sloped trench is 135 feet long, 6 feet deep, 4 feet wide at the bottom, and 8 feet wide at the top. What is the bank volume?
Proof-rolling a prepared subgrade is done to:
Finish grade on a dirt pad is the:
On a mass-haul diagram, material that cannot be used in the project fills and must leave the site is called:
Which material typically shows the largest swell when excavated from bank to loose?
A water truck on a grading spread is used primarily to:
Overexcavation on a grading project means:
A cut yields 2400 bank cubic yards. Swell is 25 percent and trucks hold 15 loose cubic yards. How many loaded trips are required?
Caliche, common in parts of Nevada, is best described as:
A crawler dozer is generally the most economical earthmover when the haul distance is:
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