What topics are covered on Page 5 of GATE 2026 Civil Engineering Set 2?

Page 5 contains the final Questions 53 to 65. It covers Transportation Engineering including railway cant, runway orientation, vertical curves, rigid pavement design and traffic flow; Irrigation Engineering; Hydrology including mass curves, storm probability and flood routing; and Open Channel Flow including critical depth and uniform flow.

What is the length of the vertical curve in the GATE 2026 Civil Set 2 gradient question?

For a downgrade of 1 in 100 meeting an upgrade of 1 in 125 with a rate of change of grade of 0.10 percent per 30 m, the required vertical curve length is 540 m.

What is the maximum traffic flow in the GATE 2026 Civil Set 2 speed-density question?

For the logarithmic speed-density relationship with vo equal to 45 km/h and jam density of 200 vehicles per kilometre, the maximum flow is approximately 3308 vehicles per hour.

What is the probability of a 15-year return-period storm occurring within 10 years?

The probability that a storm having a return period of 15 years occurs at least once during the next 10 years is approximately 48.63 percent.

What width is required for the rectangular channel in GATE 2026 Civil Set 2?

For a discharge of 96 cubic metres per second at a critical depth of 9.8 m, the required rectangular channel width is 3.00 m.

Civil Engineering Gate 2026 Set-2 Questions with Answer

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Ques 53 GATE 2026 SET-2

Which one of the following statements is TRUE?

Cant deficiency is related to train moving faster, and Cant excess is related to train moving slower.

Cant deficiency is related to train moving slower, and Cant excess is related to train moving faster.

Cant deficiency is related to train moving on the main line, and Cant excess is related to train moving on the branch line.

Cant deficiency is related to train moving on the branch line, and Cant excess is related to train moving on the main line.

(a) is the correct answer.

Ques 54 GATE 2026 SET-2

The primary purpose of the Windrose diagram is for the design of

length of a runway.

orientation of a runway.

width of a runway.

gradient of a runway.

(b) is the correct answer.

Ques 55 GATE 2026 SET-2

A downgrade of 1 in 100 meets an upgrade of 1 in 125 on a road. If the rate of change of grade is 0.10 % per 30 m, the length (in m) of the vertical curve between the two grades is ______ (rounded off to the nearest integer).

(540) is the correct answer.

Ques 56 GATE 2026 SET-2

Consider the following statements with respect to rigid pavements:
Statement-1: Bottom-up cracking (BUC) in rigid pavements is caused at the edge of the slab due to combined effect of single or tandem rear axle load and positive temperature differential.
Statement-2: Top-down fatigue cracking (TDC) in rigid pavements is caused due to repeated cycles of axle loads and negative temperature differential.
The CORRECT option is:

Both statements are TRUE.

Statement-1 is TRUE, but Statement-2 is FALSE.

Statement-1 is FALSE, but Statement-2 is TRUE.

Both statements are FALSE.

(a) is the correct answer.

Ques 57 GATE 2026 SET-2

Which of the following statements is/are TRUE with respect to the type of stresses to be considered for the design of rigid pavements?

Warping stress due to temperature differential between the top and bottom of the pavement slab as a result of daily variation in temperature

Frictional stress due to the overall increase or decrease in temperature of the pavement slab as a result of seasonal variation in temperature

Critical stress obtained as the maximum of the wheel load stress, the warping stress, and the frictional stress

Critical stress obtained as the sum of wheel load stresses at edge, interior, and corner of the pavement slab

(a,b,c) is the correct answer.

Ques 58 GATE 2026 SET-2

For a given traffic stream, the speed-density relationship is given as:
v = v_o ln(k_j/k)
where v is the mean speed (in km/h), and k is the density (in veh/km).
Considering v_o as 45 km/h, and k_j as 200 veh/km, the maximum flow (in veh/h) for the given stream is __________ (rounded off to the nearest integer).

(3308) is the correct answer.

Ques 59 GATE 2026 SET-2

A vertical curve is formed by a descending gradient of 1 in 40 meeting an ascending gradient of 1 in 50. Consider the following:
Stopping Sight Distance (SSD) = 90 m
Height of headlight of a vehicle above the road surface = 0.75 m
Headlight beam angle with respect to the longitudinal axis of the vehicle = 1.2°
Based on the sight distance criteria, the design length (in m) of the vertical curve is __________ (rounded off to the nearest integer).

(155) is the correct answer.

Ques 60 GATE 2026 SET-2

The Culturable Command Area (CCA) for a canal is 10000 hectares. The base period for a crop in the CCA is 140 days. Watering depth for the crop is 40 cm. The outlet discharge (in m³/s) lies between

3 and 4

13 and 14

23 and 24

33 and 34

(d) is the correct answer.

Ques 61 GATE 2026 SET-2

Following statements are made with respect to the mass curve of rainfall:
(I) Slope at a point on the curve can be positive.
(II) Slope at a point on the curve can be zero.
Which one of the following options is CORRECT?

Both statements (I) and (II) are TRUE.

Both statements (I) and (II) are FALSE.

Statement (I) is TRUE and statement (II) is FALSE.

Statement (I) is FALSE and statement (II) is TRUE.

(a) is the correct answer.

Ques 62 GATE 2026 SET-2

The probability (in %) that a storm having return period of 15 years may occur in the next 10 years is ______ (rounded off to two decimal places).

(48.63) is the correct answer.

Ques 63 GATE 2026 SET-2

Types of flood routing and methods are given in the table below.

Column 1	Column 2
(P) Hydrologic routing	(i) Muskingum method
(Q) Hydraulic routing	(ii) Modified Pul's method
(R) Reservoir routing	(iii) Method of Characteristics
(S) Channel routing

Option(s) giving the CORRECT match(es) between Column 1 and Column 2 is/are:

(P) – (i); (Q) – (iii); (R) – (ii)

(Q) – (i); (R) – (iii); (S) – (ii)

(P) – (i); (R) – (ii); (S) – (i)

(P) – (ii); (Q) – (iii); (R) – (ii)

(a) is the correct answer.

Ques 64 GATE 2026 SET-2

Width (in m) of a rectangular channel required to carry a discharge of 96 m³/s at a critical depth of 9.8 m is _____ (rounded off to two decimal places).
Use acceleration due to gravity = 9.8 m/s²

(3.00) is the correct answer.

Ques 65 GATE 2026 SET-2

The flow depth for a discharge of 10 m³/s in a wide rectangular channel is 2.0 m. Assume that the flow is uniform.
If the discharge is doubled, the flow depth (in m) in this channel is _________ (rounded off to two decimal places).

(3.17) is the correct answer.

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