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  • National Grid Task 71
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National Grid Task 71 Excavation & Backfilling Questions with Verified 100% Correct Answers

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Institution National Grid Task 71
Course National Grid Task 71
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National Grid Task 71 Excavation & Backfilling Questions with Verified 100% Correct Answers

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National Grid Task 71 Excavation & Backfilling Questions with Verified 100% Correct
Answers





Soil class is type c and its the least stable - (answer)What type of soil class is used for national grid and
how stable is it?



BEPM - Butane, Ethane, Propane, Methane - (answer)What are the natural gases?



for all excavations at a depth of 5 feet or more - (answer)When is shoring mandatory?



electric - powerlines, cables, conduit, and lighting cables - (answer)RED utility markings is



communication - alarm or signal lines, cables or conduits - (answer)ORANGE utility markings is



gas - oil, steam, petroleum, or gaseous materials - (answer)YELLOW utility markings is



sewer - sewers and drain lines - (answer)GREEN utility markings is



water - potable water - (answer)BLUE utility markings is



slurry lines - reclaimed water, irrigation or slurry lines - (answer)PURPLE utility markings is



temporary survey markings - (answer)PINK utility markings is



proposed excavation - (answer)WHITE utility markings is



white proposed excavation, pink temp survey and purple slurry, reclaimed and grey water and
radioactive lines - (answer)Which utility markings are seen but not as prominent?



on 6" lifts - (answer)when are pneumatic tamper and pavement breaker tamping foot used?

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