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OQ 31A & B

Across
Causes PE pipe to expand and contract
Must be graded and compacted to provide firm support
Size,material and location are required for this process
What diameter pipe should be lowered by hand
Remove, re coat refers to what
Down
___in a way that prevents damage
Also known as born on date
Type of plastic pipe used in gas industry
First two numbers in the pipe material designation code denote this
By hand,with fabric slings
Gouges,scratches,dents in excess of 10% (PE)
What should you do if pipe hits the side of the trench
Used as padding for the pipe
Left to reduce stress on the pipe