Advanced Structural Design Mid - II, November - 2014

1.Cross girders provide _________ rigidity to the bridge deck.
  • vertical
  • lateral
  • diagonal
  • horizontal
Answer: B
2.For deck slabs, maximum diameter of reinforcing bar shall be
  • 20mm
  • 16mm
  • 25mm
  • 18mm
Answer: C
3.Minimum clear cover to any reinforcement shall be
  • 35mm
  • 40mm
  • 30mm
  • 25mm
Answer: C
4.In IRC loading, class A loading is generally adopted for _____________ bridges.
  • permanent
  • temporary
  • both
  • none
Answer: A
5.For timber bridges __________ IRC loading is adopted.
  • class AA
  • class A
  • class B
  • class 70-R
Answer: C
6.Minimum depth of girder for steel girder is __________ of effective span.
  • 1/20
  • 1/25
  • 1/30
  • 1/40
Answer: C
7.When thickness of web is less than limits for vertically stiffened beams _____________ stiffeners are provided.
  • Longitudinal
  • Transverse
  • diagonal
  • none
Answer: A
8.The clear distance between successive trains of vehicles shall not be less than
  • 15m
  • 17.5m
  • 18m
  • 18.5m
Answer: D
9.Impact factor fraction for steel bridges (span of 3m to 45m) is
  • 9/(13.5 - L)
  • 9/(13.5 + 2L)
  • 9/(13.5 + 0.5L)
  • 9/(13.5 + L)
Answer: D
10.Maximum deflection of steel girder is ____________ times of the span.
  • 1/400
  • 1/600
  • 1/800
  • 1/1000
Answer: B
11.The transverse spacing between parallel adjacent lines of fasteners is called _____________.
Answer: Gauge
12.The effective length of cross girder is distance between centres of _____________ girders.
Answer: Main
13.Effective depth of plate girder is taken as distance between ___________ of top and bottom flanges.
Answer: Centre of gravity
14.Economical depth of web of plate girder is _____________ .
Answer: 1.1 ( √( M /(tw . σb ) ) )
15.In T-beams, effective width for compression flanges of beams is, be = ___________
Answer: bw + L0(1/5)
16.Slenderness ratio for a beam girder shall not exceed _____________.
Answer: 120
17.Load bearing stiffeners are provided at points of ___________ & points of _____________.
Answer: Supports & concentrated loads
18.Load bearing stiffeners should be placed ___________ on both sides of the web.
Answer: Symmetrically
19.When thickness of web is less than limits for unstiffened beams _____________ stiffeners are provided.
Answer: Transverse
20.When thickness of web is less than limits for vertically stiffened beams _____________ stiffeners are provided.
Answer: Longitudinal