Residential Contractor Tennessee Exam with accurate detailed solutions

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Residential Contractor Tennessee Exam with accurate detailed || || || || || || ||




solutions


The bucket's maximum capacity when the material is heaped above the edges of the bucket
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is - ✔✔heaped
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The contents of the bucket when it is filled to the level of the rim. No material is heaped
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over the rims, is - ✔✔struck
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Struck capacity is - ✔✔level || || || ||




Heaped capacity is - ✔✔above the rim || || || || || ||




How is a load factor calculated - ✔✔bank volume / bank volume + swell percentage
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Co. vol. = - ✔✔L x W x D / 27
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What is the advantage of a U-blade versus a Semi-U blade? - ✔✔holds more material (40%)
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What piece of equipment is a good choice if you have a wide trench with no crosslines? -
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✔✔Sheeps foot roller || ||




The later the pipe diameter, the smaller the fall requirement is needed to maintain a water
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velocity great enough to prevent - ✔✔solids from settling out
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A ____________ stake is a small stake driven into the ground to identify a particular
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reference point. - ✔✔hubs || || ||

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If a reference stake is 20.2' from the Hub and fill is to be started at a distance of 12.4' from
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the Hub, how are these distances measured? - ✔✔both horizontal
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What percent slope rises at a 45 degree angle? - ✔✔100%
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Excavate _______ trenches around a tree deep enough to cut through the root system of the
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tree. - ✔✔4 || ||




________ is the easiest type of rock to rip. - ✔✔rippable sedimentary
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The level of the groundwater is known as the ________. - ✔✔water table
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Well points work well in ________ soils. - ✔✔course grain or sandy
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How do you calculate time to excavate a set? - ✔✔Divide the volume of dirt in the set by the
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dirt moved per cycle; multiply the number of digging cycles by the average cycle time
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When dirt is moved form its natural state, this is called ________ or loose condition. -
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✔✔swell or spoils or loose volume || || || || ||




What is the purpose of a tench box? - ✔✔to support a wall of soil
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The trench box must be centered over the pipe. To maintain safety, the maximum height
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above the pipe to install the trench box is ________. - ✔✔5' above pipe
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________ is the best piece of equipment for working in mud or soft ground. - ✔✔tract
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backhoe



________ is the method for testing soil density and does not require drilling. - ✔✔nuclear
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density test ||




________ is the easiest compaction method. - ✔✔puddling or wetting the soil
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Limited working room in excavations means ________. - ✔✔you can't easily use the water
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necessary for wetting || ||




To estimate earthwork, you need to ________. - ✔✔divide the area in sections
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The term subgrade identifies ________. - ✔✔the surface elevation prior to placing any
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surface material ||




The curving broken lines on a grading plan are ________ lines. - ✔✔contour
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Widely spaced differing contour lines indicate ________ on a grading plan. - ✔✔flatter area
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Any self-loading scraper will be more productive in muddy soil when assisted by a
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________. - ✔✔dozer pushing on the push blocks at the rear of the bowl
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What is the hardest part of grader's work? - ✔✔finish blading
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What type of dozer is used for fine grading, trench backfilling, landscaping, light logging,
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and swamp dozing? - ✔✔light utility dozer
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