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General ground level = 250.00m

Prepare the following drawings (not to scale)

i. Half plan at top and half at the foundation level.
11. Longitudinal section along drain.

Design a 1.2m Sarda type fall for the following data.
Full supply discharge through the canal = 35 cumecs.
Bed level at u/s = 110.00m

Full supply depth at u/s = 1.60m

Bed width u/s and d/s = 26.0m

Safe exit gradient = 1/5

Impervious floor design is to be carried out as per Khosla’s theory.

Prepare the following drawings (not to scale)

i. Half plan at top and half at the foundation level.
11. Section through the centre line of the canal.
PART C

Answer any two full questions, each carries 10 marks.

Derive the most economical central angle of an arch dam.

Obtain the condition for no-tension criteria in a gravity dam.

Distinguish between a low dam and a high dam

Write a brief note on joints in gravity dam.

Explain chute spillway and side channel spillway.

Draw the cross-sections of the zoned earth dam you would select if the materials
available are gravel and clayey silt.

Check the stability of the gravity dam for the following data. Top width = 5m,
freeboard = 3m, u/s FRL depth = 60m, u/s batter =1/10, d/s slope = 0.7H to 1V,

u/s remains vertical to a depth of 12m from top. There is no tail water and silt.

RK

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