2219Civil EngineeringMedium
The sewers________?
AMust flow under gravity 1⁄2 to 3⁄4 full
BAll the above
CMust be laid at least 2 to 3 m deep to collect /water from the basements
DMust be of adequate size to avoid over flow
Correct answer
B. All the above
Explanation
The correct answer is All the above.