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GATE CE 2020 RCC & PSC Quiz 3

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Question 1

The shear resistance of rectangular beams without shear reinforcement depends upon the following factors
1). Grade of concrete
2). Percentage and grade of longitudinal compressive reinforcement
3). Percentage and grade of longitudinal tensile reinforcement
4). Axial tensile force
Which one of the following statements are CORRECT?

Question 2

When the section is subjected to the limiting moment of resistance then the actual stress in the steel of a singly reinforced concrete(M 20) beam of 200 mm width and 400 mm effective depth, with 4 bars of 16 mm diameter of Fe415 steel is ____ N/mm2.

Question 3

An over reinforced rectangular concrete beam has width 150 mm and overall depth 350 mm. The beam is reinforced with 4 bars of 16 mm diameter. The allowable moment resisting capacity (in kNm) of the beam, according to limit state method, is
[Take effective cover as 40 mm and M20 grade of concrete and Fe415 15 grade of steel]

Question 4

An L=beam is shown in figure below and is subjected to a factored shear force of 200 kN.

Design shear strength of concrete, τc, for M20 grade of concrete is as given below in the table

Use Feb415 steel
The design shear stress for vertical stirrups is ____ N/mm2.

Question 5

A doubly reinforced beam is subjected to a factored shear force of 300 kN. The cross-sectional dimensions are shown in figure below and design shear strength of concrete, τc for M20 grade concrete are as given in table below


The spacing (in mm) of vertical shear stirrups is
[Adopt 12 mm – 2 legged shear stirrups and Feb415 grade of steel]

Question 6

A doubly reinforced concrete beam is of 300 mm width and 600 mm overall depth. Tension reinforcement consists of 2 numbers of 25 mm diameter bars and compression reinforcement consists of 2 numbers of 16 mm diameter bars.

Assume effective cover to compression (d') and tension steel to be 40 mm.
Use M20 grade of concrete and Fe415 grade of steel.
The moment of resistance (in kNm) of beam by LSM is
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Feb 9ESE & GATE CE