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GATE (CE) 2022: RCC

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Question 1

Critical section for shear in case of flat slabs is

Question 2

During reinforcement Detailing if Deformed bars of Fe-415 Grade of steel is used instead of Plain Fe 250Grade of steel bars, then what will be the change (%) in the required development length? Both steel Bars are 16mm thick

Question 3

Consider the following statements for minimum reinforcement to be provided in a wall as a ratio of vertical reinforcement to gross concrete area:
1) 0.0012 for deformed bars.
2) 0.0015 for all other types of bars.
3) 0.0012 for welded wire fabric with wires not larger than 16 mm in diameter.
Which of these statements is/are correct?

Question 4

Match List-I (Post-tensioning system) with List-II (Type of anchorage) and select the correct answer using the codes given below the lists:
List-I
A) Freyssinet
B) Gifford-Udall
C) Lee-McCall
D) Magnel Blaton
List-II
1) Flat steel wedges in sandwich plates
2) High strength nuts
3) Split conical wedges
4) Conical serrated concrete wedges

Question 5

A rectangular prestressed beam of size 150 mm x 325 mm is simply supported over an effective span of 8 m. The beam supports an imposed load of 5 kN/m (including self-weight of beam). A straight prestressing cable carries 200 kN force with an eccentricity of 75 mm. The resultant stresses (in N/mm²) at quarter span section at bottom section is

Question 6

A rectangular concrete beam 250 mm wide and 500 mm deep is prestressed by means of 20 wires of high tensile steel each of 8 mm diameter located at 100 mm from the neutral axis of the beam at a given section. The effective prestress in the wires is 700 MPa. The maximum sagging moment due to live load which this section of the beam can withstand without causing tensile stresses at the bottom face of the beam is _____ kNm. Neglect the self weight of the beam.

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ESE & GATE CE Design of Concrete Structures

Jul 20ESE & GATE CE