Question

Choose the incorrect advantage of AOSM.

(a) The adjustment can be made by raising or lowering the roof blocks at low costs by dismantling the masonry in which the roof bolts are fixed

(b) Any undue tampering of roof blocks by the cultivators can be easily detected

(c) The module is not perfectly rigid

(d) It is the most simple and cheaper outlet

The question was asked in an interview for internship.

The query is from Regulation Modules in division Regulation Modules and Canal Structure of Irrigation Engineering

Answer 1

Correct choice is (c) The module is not perfectly rigid

Easy explanation: In ASOM, by suitable adjustment of the roof block the opening height can be changed easily after dismantling the masonry around it. But the roof block cannot be readjusted without breaking the masonry around it and thus, the outlet discharge cannot be easily tempered by the cultivators. The adjustment in dimensions has to be done at a slight cost of re-doing the masonry and hence, the module is perfectly rigid.