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A spillway discharges flood at a rate of 9 m*/s per metre width. If the depth of flow on the
horizontal apron at the toe of the spillway is 50 cm, the minimum length of apron required at
the downstream should be at least :

(A) 2m ൯) 9m
(C) 15m (D) 25m

A cube 50 cm side is inserted in a two-layer fluid with specific gravities 1.2 and 0.9. The
upper and lower halves of the cube are composed of materials with specific gravity 0.6 and
1.4 respectively, determine the depth of the top of the cube above the interface :

(A) 3.33 cm ൯) 13.33 cm
(0 25.100 ൯൩) 33.33 cm

Most economical circular section for maximum velocity condition is :
(A) _ hydraulic radius is 81% of the diameter
(B) flow depth is 81% of the diameter
(C) hydraulic radius is 95% of the diameter
(0) flow depth is 95% of the diameter

A large irrigation canal can be approximated as a wide rectangular channel and Manning’s
formula is applicable to describe the flow in it. If the gauge is related to discharge © as:

Q=C(G-a)’
(A) 1.67 (B) 1.83
(C) 0.67 (D) 0.38

The average compressive strength of common burned clay brick of class 35 is :
(A) 35 N/mm? (B) 85 Nicm?
(C) 35 kN/mm? ൯൩) 35 t/em?

Brick frog 15 :
(A) Projection on the brick face ൯) Depression on the brick face
(C) Impression of a frog on the brick (D) Brick made of a frog and clay

Where is rebar used?
(A) Mat Foundation (B) Framed structure
(C) RCC Beam ൯) All of the above

085/2022 8 A