Waste Water Engineering - Engineering

Q1:

Drop manholes are the manholes

A without entry ladders

B without manhole covers

C with depths more than 3.5 m

D having drains at different levels.

ANS:D - having drains at different levels.

It seems like you're describing what "drop manholes" are. Drop manholes are typically characterized by the absence of entry ladders and covers, having depths greater than 3.5 meters, and featuring drains at various levels. They serve specific purposes in drainage systems and infrastructure, often designed for managing water flow efficiently and safely.