GATE CE 2026 Paper 1 — page 18

Questions 52–54 of 65. Imported answers require review unless explicitly marked reviewed.

The cross-section of a steel T-beam is shown in the figure where all dimensions are in mm.

Diagram for Civil Engineering question 52

The plastic section modulus of the given cross-section is __________ × 10

(in integer).

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A fully-penetrating well of 20 cm diameter is provided in an unconfined aquifer. The height of the ground water table is 30 m from the bottom of the aquifer. After a long period of pumping at a rate of 3 m

/s, the drawdown in the observation wells at 10 m and 100 m from the pumped well is 12 m and 11 m, respectively. The transmissivity (in m

/s) of the aquifer is _____ (rounded off to one decimal place).

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A wide unlined channel carries sediment-free water. The depth of water is 1 m. The specific weight of water is 10 kN/m

. To prevent scouring, the maximum permissible tractive stress on bed is 10 N/m

. The maximum slope of the channel bed to prevent scouring is 1 in n. The value of n is _____ (in integer).

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2026 · Paper 1

Question 52

Question 53

Question 54