GRADE 2 COMPREHENSIVE TEST BANK
2026 VERIFIED QUESTIONS AND ANSWERS
●● Which equation determines open-channel flow? Answer: Manning
●● What is the purpose of a drop manhole? Answer: Manage steep
grades
●● Gas tested first in confined space? Answer: CO
●● Best tool for roots? Answer: Rodding
●● Typical manhole spacing? Answer: 300-500 ft
●● Cause of HIS? Answer: Anaerobic
●● What is the minimum velocity required to prevent solids settling?
Answer: 2.0 fps
●● Which pipe material is most corrosion-resistant? Answer: PVC