21.
In the design of piers, the water pressure to be considered is
A
all the above
B
static pressure
C
dynamic pressure
D
impact due to cross current
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In the design of piers, the water pressure to be considered is
all the above
static pressure
dynamic pressure
impact due to cross current
In preliminary survey cross sections at ................ interval should be determined.
65 m
20 m
35 m
50 m
In case of alluvial streams linear waterway is determined by Luceys formula as L = where Q is discharge and C is .............. depending upon the local conditions:
4.5 to 6.3
1.2 to 2.2
2.4 to 3.5
3.7 to 4.2
If a rocker and roller bearing is provided at one end of a bridge girder, then the other end will be
rocker bearing
fixed end
simple support
free end
Height of bridge is kept ............... above high flood level
more than 2.5 m
1.2 to 1.5 m
1.8 to 2.1 m
2.2 to 2.5 m
Generally, a culvert has span less than
12 m
3 m
6 m
9 m
For a major bridge usually the type of foundation is
caisson foundation
grillage foundation
spread foundation
well foundation
Fixed plate bearing plates are suitable for spans upto
24 m
less than 6 m
12 m
18 m
Deep cast bearings are suitable up to .................. spans
20 to 30 m
6 m
12 m
12 to 20 m
Bridge over a dry valley is known as
viaduct
causeway
minor bridge
vent
As far as possible the alignment of a bridge should be
none of the above
square
skew
curved
A bridge of span 25 m may be treated as
long span bridge
culvert
minor bridge
major bridge
A bridge of more than ................ span is treated as long span bridge.
120 m
30 m
60 m
90 m
A bascule bridge is a
through bridge
fixed bridge
movable bridge
deck bridge