🚧 Civil Engineering Solved MCQs with Answers

Practice 1228 approved 🚧 Civil Engineering questions with verified answers from the 🛠️ Engineering Essentials subject for Pakistan exams.

1228 solved MCQs

The grade of plain concrete to be used in sea water or structures exposed to sea water, should beAnswer: M 15 In case of continuous beams, the distance between the points of zero moment, may be obtained as (where l is the effective span).Answer: 0.7 l The reinforcing bars in beams are not bundled in contact if the diameter of the bars, exceedsAnswer: 36 mm For the reinforced concrete member totally immersed in sea water, the normal cover provided for the reinforcing bars is further increased byAnswer: 40 mm The effective and actual lengths of a cantilever are same if continuous at the support,Answer: restrained against torsion at the support and free at the end The slenderness ratio of single angle discontinuous struts conmected by a single rivet or bolt, shall not exceedAnswer: 180 In adverse circumtances, the reinforced concrete member immersed in sea water or subjected to sea spray, the maximum permissible cover for the reinforcing bars, should not exceedAnswer: 75 mm If a column is subjected to dead load and super imposed load only, the maximum ratio 1/r should not be greater thanAnswer: 180 If the dimensions of a rectangular section of a short column are 15 cm x 20 cm, its unsupported length should be restricted toAnswer: 9.0 m The designed transverse shear in lacing is assumed asAnswer: 2.5% of axial load For the stability of a structural part, the weight or anchorage should beAnswer: sum of (a) and (b) The creep coefficient i.e. the ratio of ultimate creep and elastic strain afterAnswer: all the above. In compression members, the lap length of a bar should not be less thanAnswer: 24 φ The assumption in the theory of bending of beams, is :Answer: all the above. The shape factor of standard rolled beam section varies fromAnswer: 1.10 to 1.20 Shear strain energy theory for the failure of a material at elastic limit, is due toAnswer: Von Mises. The point of contraflexure is the point whereAnswer: B.M. changes sign The normal component of a force inclined through θ° is obtained by multiplying the force byAnswer: sin θ cos θ A concentrated load P is supported by the free end of a quadrantal ring AB whose end B is fixed. The ratio of the vertical to horizontal deflections of the end A, isAnswer: n/2 Stress may be defined asAnswer: force per unit area Total strain energy theory for the failure of a material at elastic limit, is knownAnswer: Haig's theory Principal planes are subjected toAnswer: normal stresses only In plastic analysis, the shape factor for a circular section, isAnswer: 1.7 In plastic analysis, the shape factor for rectangular section, isAnswer: 1.5 In case of a simply supported rectangular beam of span L and loaded with a central load W, the length of elasto-plastic zone of the plastic hinge, isAnswer: L/3 In case of a simply supported rectangular beam of span L and loaded with a central load W, the length of elasto-plastic zone of the plastic hinge, isAnswer: L/3 A truss containing j joints and m members, will be a simple truss ifAnswer: m = 2j - 3 The ratio of maximum shear stress to average shear stress of a circular beam, isAnswer: 4/3 A rolled steel joist is simply supported at its ends and carries a uniformly distributed load which causes a maximum deflection of 10 mm and slope at the ends of 0.002 radian. The length of the joist will be,Answer: 16 m A material is said to be perfectly elastic ifAnswer: it regains its original shape on removal of the load