GATE CE branch:ce PYQs & Answers — Page 89 — Exam Papers

Questions 881–890 of 1300. Imported answers require independent review unless marked reviewed.

Topic practice 1300 questionsPage 89 of 130

A rigid, uniform, weightless horizontal bar is connected to three vertical members P, Q and R as shown in the figure (not drawn to the scale).

Diagram for Civil Engineering question 41

All three members have identical axial stiffness of 10 kN/mm. The lower ends of bars P and R rest on a rigid horizontal surface. When NO load is applied, a gap of 2 mm exists between the lower end of the bar Q and the rigid horizontal surface. When a vertical load W is placed on the horizontal bar in the downward direction, the bar still remains horizontal and gets displaced by 5 mm in the vertically downward direction. The magnitude of the load W (in kN, round off to the nearest integer), is ____________.

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A concrete beam of span 15 m, 150 mm wide and 350 mm deep is prestressed with a parabolic cable as shown in the figure (not drawn to the scale). Coefficient of friction for the cable is 0.35, and coefficient of wave effect is 0.0015 per meter.

Diagram for Civil Engineering question 41

If the cable is tensioned from one end only, the percentage loss (round off to one decimal place) in the cable force due to friction, is _____.

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The flange and web plates of the doubly symmetric built-up section are connected by continuous 10 mm thick fillet welds as shown in the figure (not drawn to the scale). The moment of inertia of the section about its principal axis X–X is

. The permissible shear stress in the fillet welds is 100 N/mm

. The design shear strength of the section is governed by the capacity of the fillet welds.

Diagram for Civil Engineering question 42

The maximum shear force (in kN, round off to one decimal place) that can be carried by the section, is _____.

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The plane truss has hinge supports at P and W and is subjected to the horizontal forces as shown in the figure (not drawn to scale).

Diagram for Civil Engineering question 42

Representing the tensile force with ‘+’ sign and the compressive force with ‘−’ sign, the force in member XW (in kN, round off to the nearest integer), is _____.

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The singly reinforced concrete beam section shown in the figure (not drawn to the scale) is made of M25 grade concrete and Fe500 grade reinforcing steel. The total cross-sectional area of the tension steel is 942 mm

.

Diagram for Civil Engineering question 43

As per Limit State Design of IS 456:2000, the design moment capacity (in kN.m, round off to two decimal places) of the beam section, is _____.

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The cross-section of the reinforced concrete beam having an effective depth of 500 mm is shown in the figure (not drawn to scale). The grades of concrete and steel used are M35 and Fe550, respectively. The area of tension reinforcement is 400 mm². It is given that corresponding to 0.2% proof stress, the material safety factor is 1.15 and the yield strain of Fe550 steel is 0.004.

Diagram for Civil Engineering question 43

As per IS 456:2000, the limiting depth (in mm, round off to the nearest integer) of the neutral axis measured from the extreme compression fiber, is _____.

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A simply supported prismatic concrete beam of rectangular cross-section, having a span of 8 m, is prestressed with an effective prestressing force of 600 kN. The eccentricity of the prestressing tendon is zero at supports and varies linearly to a value of

at the mid-span. In order to balance an external concentrated load of 12 kN applied at the mid-span, the required value of

(in mm, round off to the nearest integer) of the tendon, is _____.

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Two steel plates are lap jointed in a workshop using 6 mm thick fillet weld as shown in the figure (not drawn to scale). The ultimate strength of the weld is 410 MPa.

Diagram for Civil Engineering question 44

As per Limit State Design of IS 800:2007, the design capacity (in kN, round off to three decimal places) for the welded connection, is _____.

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Traffic volume count has been collected on a 2-lane road section, which needs upgradation due to severe traffic flow condition. Maximum service flow rate per lane is observed as 1280 veh/h at level of service ‘C’. The Peak Hour Factor is reported as 0.78125. Historical traffic volume count provides Annual Average Daily Traffic as 1220 veh/day. Directional split of the traffic flow is observed to be 60:40. Assuming that traffic stream consists of ‘All Cars’ and all drivers are ‘Regular Commuters’, the number of extra lane(s) (round off to the next higher integer) to be provided is _____.

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The design speed of a two-lane two-way road is 60 km/h and the longitudinal coefficient of friction is 0.36. The reaction time of a driver is 2.5 seconds. Consider acceleration due to gravity as 9.8 m/s². The intermediate sight distance (in m, round off to the nearest integer) required for the road is _____.

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