Requirements Flashcards
What is the minimum and preferred depth for mains?
Minimum - 24” (when other utilities or structure limit you)
Preferred - 36” from the top of the pipe
If Eversource is unable to provide a minimum cover of 24” what requirements must be met?
DPU Approval
A stress test of less than 20% of the MAOP
The subgrade should be within _____ of the final grade ?
6-12”
What is the preferred depth of installing services?
24” from the top of the pipe
What is the maximum width in earth?
24”
What is the minimum width in rock?
16”
What are the preferred trench configurations for mains?
Straights and 90’s
What are the preferred trench configurations for services?
Straights, 90’s, and 45’s
If Cast iron piping is exposed during an excavation who must be notified?
Gas Engineering
At what depth is shoring required?
5’ or greater
At what depth is a ladder required for egress?
4’ or greater
A worker should not have to travel more than _____ feet to get to a ladder.
25’
A ladder is required to extend _____ feet above the trench.
3’
Excavation soil should be a least _____ from the edge of the trench.
2’
Caution tape should be placed at a depth of ______ below grade, and a minimum of ________ above the installed pipe.
1’
