Consider following statements related to Khosla’s theory of seepage below a hydraulic structure for a weir shown below :
1. Correction for pressure at point C, due to mutual interference of pile no (2) on pile no (1) shall be positive
2. Correction for pressure at point E2 due to mutual interference of pile no (1) on pile no (2) shall be negative
3. Correction for pressure at point E1 due to thickness of floor shall be positive
4. Correction for pressure at point C1 due to thickness of floor shall be negative
Correct statement(s) is/are:
Question 2
Consider following expressions as per Lacey’s theory for design of stable channels:
1. Velocity,
2. Perimeter,
3. Silt factor,
4. Slope,
(Symbols have usual meaning)
Correct expressions is/are:
Question 3
Consider following statements related to wave pressure generated on surface of reservoir behind a gravity dam:
1. Maximum pressure intensity is given by Pw = 2.4 Ywhw
2. Maximum pressure intensity occurs at meters above still water surface.
3. Total pressure due to waves generated is given by Pt = 2γwhw2
4. Total pressure acts at a distance of 0.625 hw above still water surface.
(hw = height of waves in meter)
Correct statement(s) is /are :
Question 4
As per recommendation made by IS 456:2000, minimum cement content in concrete to be used for RCC work at a site under ‘severe’ exposure condition should be:
Question 5
The loss due to creep in a pre tensioned beam. If the actual stress in concrete at the level of steel is 8.08 N/mm2. Take, Es = 210 kN/mm2, Ec = 36.85 kN/mm2. ϕ= 1.60
Question 6
According to the concept of limit state design as per IS 456 : 2000; the probability failure of a structure is.
Question 7
Which of the following statements is NOT correct:
Question 8
Which of the following statements with respect to loads on the roof truss as per IS 875 : 2010 is/are correct.
1. For slope of the truss to be more than 10°, live load is assumed to be 1.5 kN/m2 minus 0.02 kN/m2 for every degree increase in slope above 10° subject to a minimum value of 0.4 kN/m2
2. Snow load is assumed to be 2.5 N/m2 for every ‘mm’ depth of snow.
3. Snow load is neglected for slope of the truss greater than 50°.
4. IS 875 part 3 deals with wind loads to be considered for designing buildings and structures.
Question 9
Statement (I): In design of a gantry girder, it is considered that lateral load and longitudinal load do not act simultaneously.
Statement (II): In a gantry girder crane movement and crab movement are not permitted simultaneously.
Question 10
Statement (I): The permissible stresses in steel are increased by 331/3 percent when the effect of wind or seismic load is taken into account.
Statement (II): The permissible stress in bolts are increased by 662/3 percent when the effect of wind or seismic load is taken into account.
meters above still water surface.
