# Important Civil Engineering Questions with Answers

**Important Civil Engineering Questions asked in Competative Exams:**

- For a 30 degree cranked or bend up bar, the inclined length of the crank is equal to
**2d.** - Wind load analysis can be done by using
**IS 875- part 3.** - Temporary spurs are also called
**bunds.** - The Unified Soil Classification System was originally developed by
**Casagrande.** - The least count of a prismatic compass is
**30 seconds.** - Street inlets for draining rain water are located along the road side on straight roads at an interval of
**30 to 60m.** - The binding material in the mortar is also called
**matrix.** **U- shaped lines**indicate the presence of a ridge.- Aerated concrete is
**light**in weight. - The length of a transition curve depends on the rate of change of
**centrifugal acceleration.** - The total length of bar having hook at both the ends is
**L+18D.** - Shear stress is
**tangential stress.** - A lateral shift in the transition curve is given by
**L^2/24R.** **IS 10262**code provides recommended guidelines for concrete mix design.- If crest length is equal to the width of the channel then it is called
**suppressed weir.** - For under water construction
**quick setting**cement is used. - The slope of a bending moment diagram gives
**shear force.** - The minimum furrow grade to assure surface drainage is
**0.05%.** - The degree of a curve for a 30m chain is
**1718.9/R.** **Fine clay and silt**particle has the least self-cleaning velocity.- Sarda type fall was designed to
**minimise the depth of cutting.** - Offsets are of two types
**perpendicular and oblique.** - Full form of PVCN with respect to paint is
**Pigment value concentration number.** - Common glass is also known as
**bottle glass.** - Glacier deposited soil is called
**till.** - Cast iron is manufactured by re-melting
**pig iron**with coke and limestone. - Standard deviation is proportional to
**mean strength.** - An error due to the earth’s curvature and refraction is to be corrected using
**C**_{c}= 0.0673D^{2} - For a circular column with diameter ‘d’ subjected to a compressive load ‘W’ at an eccentricity ‘e’, the diameter of core of a section is
**d/4.** - For most economical section using Chezy’s formula, depth of flow for maximum discharge through circular channel of diameter D is
**0.95D.** - In masonary NO deduction is made for opening each upto
**1000 sq.cm.** - Water absorption for class A type of roof tiles is
**20-24%.** - Precipitation=
**Evaporation + Runoff.** - In practice, flow velocity adopted for the design of grit chamber is
**0.25 to 0.3 m/sec.** - For stopping sight distance the eye level should be at
**1.2m.** - The longitudinal cofficient of friction on highway for calculation of stopping distance in geometrical design is
**0.35 to 0.4.** - The cofficient of discharge for for Venturimeter (Cd) is ranges from
**0.95 to 0.99.**

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