Civil Engineering GATE 2016 Set-1 Questions with Answer

Ques 53 Structural Engineering

The semi-compact section of a laterally unsupported steel beam has an elastic section modulus, plastic section modulus and design bending compressive stress of 500 cm³, 650 cm³ and 200 MPa, respectively. The design flexural capacity (expressed in kNm) of the section is _________.

100 is the correct answer.

Ques 54 Structural Engineering

A 3 m long simply supported beam of uniform cross section is subjected to a uniformly distributed load of w=20 kN/m in the central 1 m as shown in the figure.

If the flexural rigidity (EI) of the beam is 30×10⁶N-m², the maximum slope (expressed in radians) of the deformed beam is

0.681×10^-7

0.943×10^-7

4.310×10^-7

5.910×10^-7

Ques 55 Structural Engineering

Two beams PQ (fixed at P and with a roller support at Q, as shown in Figure I, which allows vertical movement) and XZ (with a hinge at Y) are shown in the Figures I and II respectively. The spans of PQ and XZ are L and 2L respectively. Both the beams are under the action of uniformly distributed load (W) and have the same flexural stiffness, El (where, E and I respectively denote modulus of elasticity and moment of inertia about axis of bending). Let the maximum deflection and maximum rotation be δ_max1 and θ_max1, respectively, in the case of beam PQ and the corresponding quantities for the beam XZ be δ_max2 and θ_max2, respectively.
Which one of the following relationships is true?

δ_max1≠δ_max2 and θ_max1≠θ_max2

δ_max1=δ_max2 and θ_max1≠θ_max2

δ_max1≠δ_max2 and θ_max1=θ_max2

δ_max1=δ_max2 and θ_max1=θ_max2

Ques 56 Structural Engineering

A plane truss with applied loads is shown in the figure.

The members which do not carry any force are

FT, TG, HU, MP, PL

ET, GS, UR, VR, QL

FT, GS, HU, MP, QL

MP, PL, HU, FT, UR

Ques 57 Structural Engineering

A rigid member ACB is shown in the figure. The member is supported at A and B by pinned and guided roller supports, respectively. A force P acts at C as shown. Let R_Ah and R_Bh be the horizontal reactions at supports A and B, respectively, and R_Av be the vertical reaction at support A. Self-weight of the member may be ignored.

Which one of the following sets gives the correct magnitudes of R_Av, R_Bh and R_Ah?

R_Av=0; R_Bh=(1/3)P; and R_Ah=(2/3)P

R_Av=0, R_Bh=(2/3)P; and R_Ah=(1/3)P

R_Av=P; R_Bh=(3/8)P; and R_Ah=(1.5/8)P

R_Av=P; R_Bh=(1.5/8)P; and R_Ah=(1.5/8)P

Ques 58 Structural Engineering

A reinforced concrete (RC) beam with width of 250 mm and effective depth of 400 mm is reinforced with Fe415 steel. As per the provisions of IS 456-2000, the minimum and maximum amount of tensile reinforcement (expressed in mm²) for the section are, respectively

250 and 3500

205 and 4000

270 and 2000

300 and 2500

Ques 59 Structural Engineering

For M25 concrete with creep coefficient of 1.5, the long-term static modulus of elasticity (expressed in MPa) as per the provisions of IS:456-2000 is

10000 is the correct answer.

Ques 60 Structural Engineering

A propped cantilever of span L carries a vertical concentrated load at the mid-span. If the plastic moment capacity of the section is M_p, the magnitude of the collapse load is

8M_p/L

6M_p/L

4M_p/L

2M_p/L

Ques 61 Structural Engineering

Two plates are connected by fillet welds of size 10 mm and subjected to tension, as shown in the figure. The thickness of each plate is 12 mm. The yield stress and the ultimate tensile stress of steel are 250 MPa and 410 MPa, respectively. The welding is done in the workshop (γ_mv=1.25)
As per the Limit State Method of IS 800: 2007, the minimum length (rounded off to the nearest higher multiple of 5 mm) of each weld to transmit a force P equal to 270 kN (factored) is

90 mm

105 mm

110 mm

115 mm

Ques 62 Transportation Engineering

During a forensic investigation of pavement failure, an engineer reconstructed the graphs P, Q, R and S, using partial and damaged old reports.

Theoretically plausible correct graphs according to the 'Marshall mixture design output' are

P, Q, R

P, Q, S

Q, R, S

R, S, P

Ques 63 Transportation Engineering

In a one-lane one-way homogeneous traffic stream, the observed average headway is 3.0 s. The flow (expressed in vehicles/hr) in this traffic stream is _________.

1200 is the correct answer.

Ques 64 Transportation Engineering

A two lane, one-way road with radius of 50 m is predominantly carrying lorries with wheelbase of 5 m. The speed of lorries is restricted to be between 60 kmph and 80 kmph. The mechanical widening and psychological widening required at 60 kmph are designated as w_me,60 and w_ps,60, respectively. The mechanical widening and psychological widening required at 80 kmph are designated as w_me,80 and w_ps,80, respectively. The correct values of w_me,60, w_ps,60, w_me,80, w_ps,80, respectively are

0.89 m, 0.50 m, 1.19 m, and 0.50 m

0.50 m, 0.89 m, 0.50 m, and 1.19 m

0.50 m, 1.19 m, 0.50 m, and 0.89 m

1.19 m, 0.50 m, 0.89 m, and 0.50 m

Ques 65 Transportation Engineering

While traveling along and against the traffic stream, a moving observer measured the relative flows as 50 vehicles/hr and 200 vehicles/hr, respectively. The average speeds of the moving observer while traveling along and against the stream are 20 km/hr and 30 km/hr, respectively. The density of the traffic stream (expressed in vehicles/km) is

3 is the correct answer.

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Civil Engineering GATE 2016 Set-1 Questions with Answer