civil engineering Mcqs
5201. Bolts are most suitable to carry_________________?
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A. bending

B. shear and bending

C. axial tension

D. shear

5202. When the bolts are subjected to reversal of stresses, the most suitable type of bolt is________________?
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A. ordinary unfinished bolt

B. turned and fitted bolt

C. black bolt

D. high strength bolt
5203. Pitch of tacking rivets, when double angles connected back to back and acting as tension members should not be more than_________________?
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A. 300 mm

B. 1000 mm

C. 600 mm

D. 500 mm

5204. According to IS:800, in the Merchant Rankine formula the value of imperfection index (n) is_______________?
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A. 1.4

B. 1.8

C. 2

D. 1

5205. The bracing between two columns of a steel tank will be designed to resist_________________?
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A. column loads + full horizontal shear due to wind or earthquake

B. horizontal shear due to wind or earthquake only

C. horizontal, shear due to wind or earthquake + 2.5% of column loads

D. column loads + 2.5% of horizontal shear due to wind or earthquake

5206. The least dimension in case of a circular column of diameter D is taken as_______________?
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A. 0.5 D

B. 0.88 D

C. 0.68 D

D. D

5207. Angle of inclination of the lacing bar with the longitudinal axis of the column should preferably be between____________________?
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A. 10 to 30

B. 40 to 70

C. 90

D. 30 to 40

5208. The number of seismic zones in which the country has been divided are_________________?
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A. 6

B. 5

C. 3

D. 7

5209. For a compression member with double angle section, which of the following section will give larger value of minimum radius of gyration?
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A. equal angles back to back

B. unqual legged angles with long legs back to back

C. unequal legged angles with short legs back to back

D. both (B) or (C)

5210. The risk coefficient k, depends on__________________?
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A. mean probable design life of structures

B. basic wind speed

C. both (A) and (B)

D. none of the above

5211. As per IS : 800, for compression flange, the outstand of flange plates should not exceed________________?
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A. 201

B. 121

C. 251

D. 161
5212. The effect of racking forces is considered in the design of_________________?
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A. lateral braces

B. correct answer is</strong>

C. chord members

5213. The sway bracing is designed to transfer____________________?
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A. 25% of the top panel wind load to bottom bracing

B. 2Vi % of the top panel wind load to bottom bracing

C. 50% of the top panel wind load to bottom bracing

D. 10% of the top panel wind load to bottom bracing

5214. Shear buckling of web in a plate girder is prevented by using________________?
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A. none of the above

B. vertical intermediate stiffener

C. horizontal stiffener at neutral axis

D. bearing stiffener

5215. Hudsons formula gives the dead weight of a truss bridge as a function of_________________?
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A. heaviest axle load of engine

B. top chord area

C. bottom chord area

D. effective span of bridge

5216. The effective length of a battened column is increased by_________________?
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A. 5%

B. 10%

C. 15%

D. 20%

5217. In case of timber structures, the simple bending formula M = fz may be applied for________________?
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A. solid circular beams only

B. all rectangular beams

C. all square cross-section beams

D. rectangular beams up to 300 mm depth
5218. The range of economical spacing of trusses varies from________________?
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A. L/3 to L/5

B. 2L/5 to 3L/5 where L is span

C. L/3 to L/2

D. L/4to2L/5

5219. As per IS:800, in the plastic design, which of the following pairs are correctly matched? Working Loads Load factor________________?
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A. ) Dead Load + imposed load 1.7

B. i) Dead load + load due to wind or 1.3 seismic forces

C. ) Dead load + imposed load + load 1.7</strong>

D. Dead load 1.7
5220. Which of the following sections should preferably be used at places where torsion occurs ?
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A. any of the above

B. angle section

C. channel section

D. box type section
5221. Generally the purlins are placed at the panel points so as to avoid__________________?
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A. bending moment in rafter

B. shear force in rafter

C. axial force in rafter

D. deflection of rafter

5222. Minimum thickness of web in a plate girder, when the plate is accessible and also exposed to weather, is______________?
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A. 10 mm

B. 5 mm

C. 8 mm

D. 6 mm
5223. A steel beam supporting loads from the floor slab as well as from wall is termed as________________?
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A. stringer beam

B. header beam

C. spandrel beam

D. lintel beam

5224. When the axis of load lies in the plane of rivet group, then the most heavily loaded rivet will be the one which________________?
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A. is at the maximum distance from CG of the rivet group

B. gives the maximum angle between the two forces Fa and Fm

C. gives the minimum angle between the two forces Fa and Fm

D. is at the minimum distance from CG of the rivet group

5225. The slenderness ratio of a column supported throughout its length by a masonry wall is________________?
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A. zero

B. 10

C. infinity

D. 100

5226. If the floor is supported at or near the bottom but top chords of a bridge are not braced, then the bridge is called________________?
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A. double deck type

B. through type

C. half through type

D. deck type

5227. The heaviest I-section for same depth is_________________?
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A. ISHB

B. ISLB

C. ISWB

D. ISMB

5228. The effective length of a battened strut effectively held in position at both ends but not restrained in direction is taken as________________?
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A. 1.5 L

B. 1.1 L

C. L

D. 1.8 L

5229. The difference between gross diameter and nominal diameter for the rivets up to 25 mm diameter is__________________?
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A. 1.0 mm

B. 2.5 mm

C. 2.0 mm

D. 1.5 mm
5230. Gantry girders are designed to resist_________________?
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A. longitudinal loads and vertical loads

B. lateral and longitudinal loads

C. lateral loads

D. lateral, longitudinal and vertical loads
5231. For a standard 45 fillet, the ratio of size of fillet to throat thickness is_______________?
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A. 1:01

B. 1 : V2

C. 2:01

D. V2 : 1
5232. The maximum slenderness ratio of a steel column, the design of which is governed by wind or seismic forces is________________?
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A. 350

B. 250

C. 150

D. 180

5233. A butt weld is specified by__________________?
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A. effective throat thickness

B. size of weld

C. plate thickness

D. penetration thickness

5234. The maximum permissible span of asbestos cement sheets is______________________?
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A. 810 mm

B. 650 mm

C. 1680 mm

D. 1250 mm

5235. The external wind pressure acting on a roof depends on__________________?
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A. degree of permeability of roof

B. slope of roof

C. both (A) and (B)

D. none of the above

5236. Economical depth of a plate girder corresponds to_________________?
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A. minimum thickness of web

B. minimum depth

C. maximum weight

D. minimum weight
5237. Formation of snow occurs if the cloud temperature is________________?
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A. None of these

B. Below the freezing point

C. At the freezing point

D. Just above the freezing point

5238. The minimum thickness of a steel plate, which is directly exposed to weather and is not accessible for cleaning and repainting, should be___________________?
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A. 8 mm

B. 10 mm

C. 6 mm

D. 4.5 mm

5239. The web crippling due to excessive bearing stress can be avoided by_________________?
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A. providing suitable stiffeners

B. increasing the length of the bearing plates

C. none of the above

D. increasing the web thickness

5240. In case of timber structures, the form factor for solid circular cross-section is taken as_________________?
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A. 1.414

B. 1.67

C. 1.81

D. 1.18
5241. For the buildings having a low permeability, the internal wind pressure acting normal to the wall and roof surfaces is taken as__________________?
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A. 0.2p

B. 0.5 p

C. 0.7p

D. re p is basic wind pressure

E. zero

5242. Horizontal stiffener in a plate girder is provided to safeguard against_______________?
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A. shear buckling of web plate

B. yielding

C. compression buckling of web plate

D. all of the above

5243. If the loaded length of span in meters of a railway steel bridge carrying a single track is 6 m, then impact factor is taken as_________________?
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A. 1

B. between 0.5 and 1.0

C. 0.5

D. 0

5244. compression force in two end posts The pin of a rocker bearing in a bridge is designed for_________________?
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A. bearing, shear and bending

B. bending and shear

C. bearing and shear

D. bearing and bending

5245. Lug angles_________________?
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A. are used to reduce the length of connection.

B. all the above

C. increases shear lag.

D. are unequal angles.

5246. Battening is preferable when the________________?
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A. space between the two main components is not very large

B. ) column is eccentrically loaded </strong>

C. correct answer is

D. column carries axial load only
5247. The connection of intermediate vertical stiffeners to the web, not subjected to external loads, shall be designed for a minimum shear force (kN/m) of___________________?
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A. 75 t2/h

B. 175 t2/h

C. 125 t2/h

D. 125 t3/h2

5248. Lacing bars in a steel column should be designed to resist_________________?
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A. bending moment due to 2.5% of the column load

B. shear force due to 2.5% of the column load

C. 2.5% of the column load

D. both (A) and (B)

5249. Minimum spacing of vertical stiffeners is limited to________________?
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A. 2d/3

B. d/3

C. d/2

D. d/4

5250. The live load for a sloping roof with slope 15, where access is not provided to roof, is taken as_______________?
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A. 0.75 kN/m2

B. 1.35 kN/m2

C. 0.65 kN/m2

D. 1.50 kN/m2