Quote:
Originally Posted by llwhiteoutll
Is 300mm out of Z662? I don't have a copy here with me.
In any case, the Pipeline Act has a section in it that states coverage must be the greater of either Z662 specs or 1.4m within a highway right of way. It also states that for pipe under a road, the casing or thicker wall pipe must extend the entire width if the right if way. Hopefully it's already built to the higher spec because it would be an insane cost to case the pipe along the length of 14th that the new road would be on.
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As the said pipeline most likely lies within the existing road allowance, albeit not under the existing pavement, there is a good chance it was designed to lie under the road .
Quote:
Originally Posted by Regorium
but API 1102 provides guidance for this type of calculation. It's quite a simple calculation that the project engineers can and should perform.
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Careful, doesn't API 1102 apply for
crossing roads - typical at a crossing angle of 30 degrees or larger? Their reference graphs (which my understanding the standard is based off) may not apply for pipelines lying under a road at essentially a 0 degree crossing angle.