EXAM GRADED A+ LATEST UPDATE.
Minimum velocity required to keep solids in suspension? ANS >>>
2ft/sec
Minimum required velocity an inverted siphon requires? ANS >>>
3ft/sec
Two most common pipe materials used in the collection
system? s Clay & PVC
OSHA minimum standards for shoring, sloping, or trench boxes
are? ANS >>> 5ft or deeper