Q. The head loss through a siphon barrel is usually given by Unwin’s formula by neglecting velocity of approach as HL = [1 + F₁ + F₂. L/R] V²/2g, where F₁ and F₂ respectively represent the coefficient of head losses due to?

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Q. The floor of a siphon aqueduct needs to be designed for conditions when?

i. The canal and drainage are flowing full
ii. The canal is full and there is no drainage discharge
iii. The canal is empty and drainage discharge is full

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Q. A siphon aqueduct is constructed at a canal crossing site where drainage HFL was 212.2 m by allowing an afflux of 0.4 m at high flood discharge. At this site, the water level downstream of the crossing at the same high flood will be _________

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Q. Calculate the depth of cut-off for scour holes for an irrigation channel of F.S.Q equal to 354 cumecs and H.F.Q of natural drainage equal to 600 cumecs. Assume the value of friction factor as 1.

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Q. Calculate the value of hydraulic mean radius for a channel designed by Lacey’s theory which has a mean velocity of 1m/sec. The silt factor can be taken as unity.

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Q. Which of the following is usually adopted for contraction and construction joints?

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Q. Which of the following is not a movement joint?

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Q. A partial contraction joint is the one in which?

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Q. Which of the following is a movement joint with deliberate discontinuity but no initial gap?

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Q. Which of the following is a movement joint with complete discontinuity in both reinforcement and concrete and intended to accommodate either expansion or contraction of the structure?

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Q. In reinforced concrete floors, the movement joints should normally be spaced at a maximum spacing of ____________

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Q. The expansion joints in floors and walls should normally be provided at a spacing of not more than ___________

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Q. What is the maximum expansion or contraction allowed for the joint filler material with an initial gap of about 30 mm?

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Q. Which of the following can be used as support for an effective joint sealing compound in floor and floor joints?

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Q. What provides a permanent watertight seal during the whole range of joint movement?

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Q. Which of the following is sometimes used in expansion joints to avoid the risk of fault in an embedded water bar?

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Q. Joint sealing compounds are impermeable ductile materials which are required to ___________________

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Q. In case of the sealing joint, the lower part of the joint is occupied by joint filler.

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Q. What is the most common metal used for water stops?

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Q. The use of sealing compounds for vertical joints is very successful.

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