Description : Partial safety factor for strength in steel m Limit state design is [ A ] 1.15 [ B ] 1.25 [ C ] 1.5 [ D ] 1.65
Last Answer : [ A ] 1.15
Description : Partial safety factor for strength of concrete in Limit state design is [ A ] 1.15 [ B ] 1.25 [ C ] 1.5 [ D ] 1.65
Last Answer : [ C ] 1.5
Description : In Limit state method of design, the factor of safety for concrete and steel respectively are [ A ] 3.00 and 1.80 [ B ] 1.50 and 1.18 [ C ] 1.50 and 1.15 [ D ] 1.50 and 1.50
Last Answer : [ C ] 1.50 and 1.15
Description : In working stress method of design, the factor of safety for concrete and steel respectively are [ A ] 3.0 and 1.8 [ B ] 3.0 and 1.18 [ C ] 3.0 and 1.15 [ D ] 1.5 and 1.5
Last Answer : [ A ] 3.0 and 1.8
Description : Factor of safety for fatigue loading is the ratio of (a) elastic limit to the working stress (b) Young's modulus to the ultimate tensile strength (c) endurance limit to the working stress (d) elastic limit to the yield point
Last Answer : (c) endurance limit to the working stress
Description : In limit state design of concrete for flexure, the area of stress block is taken as (a) 0.530 fck. Xu (b) 0.446 fck . Xu ( c) 0.420 fck .Xu (d) 0.360 fck . Xu Where fck is characteristic compressive strength of concrete and Xu is the depth of neutral axis from top.
Last Answer : (d) 0.360 fck . Xu
Description : The Maximum strength attained in concrete in limit state design is generally taken as [ A ] fck [ B ] 0.67 fck [ C ] 0.45 fck [ D ] 0.30 fck
Last Answer : [ C ] 0.45 fck
Description : Consider the following statements: Percentage of steel for balanced designed of a singly reinforced rectangular section by limit state method depends on (1) Characteristic strength of concrete (2) Yield strength of concrete (3) Modulus of elasticity ... (b) 1, 3 and 4 (c) 1, 2 and 4 (d) 1, 2 and 3
Last Answer : 1,2,4
Description : Design yield stress for steel in tension and compression is [ A ] 0.65 fy [ B ] 0.87 fy [ C ] 0.75 fy [ D ] None of the above
Last Answer : [ B ] 0.87 fy
Description : Working stress method of design results in -------------- percentages of compression steel than that of a limit state method of design [ A ] Equal [ B ] Larger [ C ] Smaller [ D ] Half of the
Last Answer : [ B ] Larger
Description : Distortion or change in shape of a cast partial denture clasp during its clinical use probably indicates that the: A. Ductility was too low B. Hardness was too great C. Ultimate tensile strength was too low D. Tension temperature was too high E. Elastic limit was exceeded
Last Answer : E. Elastic limit was exceeded
Description : The theoretical stress-strain curve of the concrete in the Limit State design of structures is correspondingly reduced by the factor [ A ] 0.35 [ B ] 0.5 [ C ] 0.67 [ D ] 0.75
Last Answer : [ C ] 0.67
Description : When shear stress exceeds the permissible limit in a slab, then it is reduced by (A) Increasing the depth (B) Providing shear reinforcement (C) Using high strength steel (D) Using thinner bars but more in number
Last Answer : Answer: Option A
Description : In a limit state method of design, when shear reinforcement is not provided, the calculated shear stress at the critical section of a slab shall not exceed; [ A ] Ks 0.25 v fck [ B ] ks 0.20 v fck [ C ] ks 0.16 v fck [ D ] ks 0.10 v fck
Last Answer : [ A ] Ks 0.25 v fck
Description : Factor of safety against sliding of a slope, is the ratio of (A) Actual cohesion to that required to maintain stability of slope (B) Shear strength to shear stress along the surface (C) Neither (a) nor (b) (D) Both (a) and (b)
Last Answer : Answer: Option D
Description : When a material is subjected to fatigue loading, the ratio of the endurance limit to the ultimate tensile strength is (a) 0.20 (b) 0.35 (c) 0.50 (d) 0.65
Last Answer : (c) 0.50
Description : For the design of retaining walls, the minimum factor of safety against overturning is taken as (A) 1.5 (B) 2.0 (C) 2.5 (D) 3.0
Last Answer : Answer: Option B
Description : The stresses developed in concrete and steel in reinforced concrete beam 25 cm width and 70 cm effective depth, are 62.5 kg/cm2 and 250 kg/cm2 respectively. If m = 15, the depth of its neutral axis is (A) 20 cm (B) 25 cm (C) 30 cm (D) 35 cm
Last Answer : Answer: Option C
Description : In general in the design of a section by limit method, it is assumed that [ A ] the stress in steel to reach its yield limit before concrete failure [ B ] the stress in concrete to ... in both concrete and steel reach their permissible values simultaneously [ D ] none of the above are correct
Last Answer : [ A ] the stress in steel to reach its yield limit before concrete failure
Description : If Q is load factor, S is shape factor and F is factor of safety in elastic design, the following: (A) Q = S + F (B) Q = S - F (C) Q = F - S (D) Q = S × F
Last Answer : (D) Q = S × F
Description : A singly reinforced concrete beam of 25 cm width and 70 cm effective depth is provided with 18.75 cm2 steel. If the modular ratio (m) is 15, the depth of the neutral axis, is (A) 20 cm (B) 25 cm (C) 30 cm (D) 35 cm
Description : A simply supported beam 6 m long and of effective depth 50 cm, carries a uniformly distributed load 2400 kg/m including its self weight. If the lever arm factor is 0.85 and permissible tensile stress of steel is 1400 kg/cm2 ... area of steel required, is (A) 14 cm (B) 15 cm2 (C) 16 cm2 (D) 17 cm
Description : The factor of safety for (A) Steel and concrete are same (B) Steel is lower than that for concrete (C) Steel is higher than that for concrete (D) None of the above
Description : Examine the following statements: (i) Factor of safety for steel should be based on its yield stress, (ii) Factor of safety for steel should be based on its ultimate stress, (iii) Factor of safety for concrete should be based on ... (iii) (B) (i) and (iv) (C) (ii) and (iii) (D) (ii) and (iv
Description : If"w" is weight of a retaining wall and is the horizontal earth pressure, the factor of safety against sliding, is (A) 1.0 (B) 1.25 (C) 1.5 (D) 2.0
Description : For an I beam, the shape factor is 1.12. If the allowable stress (with factor of safety in bending as 1.5) is increased by 20% for wind and earthquake loads, the modified load factor is (a) 1.10 (b) 1.25 (c) 1.35 (d) 1.40
Last Answer : (d) 1.40
Description : The design yield stress of steel according to IS: 4561978 is: (A) 0.37 fy (B) 0.57 fy (C) 0.67 fy (D) 0.87 fy Where fy is the characteristic yield strength of steel
Description : The most critical consideration in the design of a rolled steel column carrying axial loads is the (a) Percentage elongation at yield and the net cross-sectional area (b) Critical bending ... at ultimate load (d) Compressive strength based on slenderness ratio and gross cross-sectional area.
Last Answer : (d) Compressive strength based on slenderness ratio and gross cross-sectional area.
Description : Select the incorrect statement from the following In eccentrically loaded columns, [ A ] The tensile strength of concrete is ignored [ B ] Design stress - strain curve for steel in compression is the ... different points in the section will be same [ D ] Plane section remain plane even after bending
Last Answer : [ C ] The strain at different points in the section will be same
Description : Design shear strength of concrete is a function of i.Percentage of tension steel ii.Grade of concrete iii.Grade of steel [ A ] i and ii [ B ] ii only [ C ] i and iii [ D ] i, ii and iii
Last Answer : [ A ] i and ii
Description : The differential settlement in case of foundations on sandy soils should not exceed (A) 25 mm (B) 40 mm (C) 65 mm (D) 100 mm
Description : If the rate of change of the super-elevation along a curved portion of a 7 metre wide road is 1 in 150 and the maximum super-elevation allowed is 1 in 15, the maximum length of the transition curve to be provided at either end, is (A) 65 m (B) 70 m (C) 75 m (D) 80 m
Description : The practical limit of moisture content achieved in air drying of timber is (A) 5 % (B) 15 % (C) 25 % (D) 35 %
Description : The connecting rod bolts are tightened up so that the initial tightening stress (A) Approaches yield point (B) Approaches endurance limit (C) Approaches (yield point stress/factor of safety) (D) Approaches (endurance limit stress/factor of safety)
Last Answer : (A) Approaches yield point
Description : Define: i) Elastic limit ii) Factor of safety .
Last Answer : i) Elastic limit: -It is the maximum value of the stress upto which the body shows elasticity. ii) Factor of Safety: It is defined as the ratio of ultimate stress to working stress.
Description : In a liquid limit test, the moisture content at 10 blows was 70% and that at 100 blows was 20%. The liquid limit of the soil, is (A) 35 % (B) 50 % (C) 65 % (D) None of these
Description : If Ac , Asc and A are areas of concrete, longitudinal steel and section of a R.C.C. column and m and c are the modular ratio and maximum stress in the configuration of concrete, the strength of column is (A) cAc + m cAsc (B) c (A - Asc) + m cAsc (C) c [A + (m - 1)ASC] (D) All the above
Description : Factor of safety in the design of springs is usually (A) 1.5 or less (B) 3 or less (C) 4.5 or less (D) 6 or less
Last Answer : (A) 1.5 or less
Description : For maximum strength and durability minimum percentage of cement, by weight is (A) 15 % (B) 20 % (C) 25 % (D) 30 %
Description : The strength of concrete after one year as compared to 28 days strength is about (A) 10 to 15% more (B) 15 to 20% more (C) 20 to 25% more (D) 25 to 50% more
Description : A concrete structure is set on fire and the temperature raises to 1000°C. The strength of concrete as compared to original strength reduces to (A) 10 % (B) 15 % (C) 20 % (D) 25 %
Description : Normally, the tensile strength of concrete is about____________of its compressive strength (a) 10 to 15% (b) 15 to 20% (c) 20 to 25% (d) 25 to 30%
Last Answer : (a) 10 to 15%
Description : High strength of concrete requires a water cement ratio of [ A ] 0.10 to 0.15 [ B ] 0.25 to 0.30 [ C ] 0.45 to 0.60 [ D ] 0.75 to 0.90
Last Answer : [ B ] 0.25 to 0.30
Description : The width b and depth d of a beam cut from a wooden cylindrical log of 100 cm diameter for maximum strength are: (A) b = 57.73 cm d = 81.65 cm (B) b = 81.65 cm d = 57.73 cm (C) b = 50.00 cm d = 50.00 cm (D) b = 40.00 cm d = 80.00 cm
Last Answer : (A) b = 57.73 cm d = 81.65 cm
Description : At 28 days of curing concrete attains a strength of [ A ] 20 to 25% [ B ] 60 to 70% [ C ] 65 to 80% [ D ] 90 to 95%
Last Answer : [ D ] 90 to 95%
Description : Area of steel required per metre width of pavement for a length of 20 m for design wheel load 6300 kg and permissible stress in steel 1400 kg/cm2 , is (A) 70 kg/sq cm (B) 80 kg/sq cm (C) 90 kg/sq cm (D) 100 kg/sq cm