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1.Steel is mainly an alloy of, a) Iron and Carbon, b) Sulphur and Zinc, c) Zinc and tin, d) Phosphorous and Tin, 2.Poisson’s ratio of steel in plastic range________, a) 0.1, b) 0.5, c) 0.3, d) 2.0, 3. What is the permissible percentage of Sulphur and Phosphorous content in steel?, a) 0.1%, 0.12%, b) 1.0%, 3.0%, c) 3.0%, 1.0%, d) 1.0%, 1.0%, 4. Thickened part of a flat slab over its supporting column, is technically known as, _____________, a) drop panel, b) capital, c) column head, d) cannot be determined, , 5. Which of the following is correct criteria to be considered while designing?, a) Structure should be aesthetically pleasing but structurally unsafe, b) Structure should be cheap in cost even though it may be structurally unsafe, c) Structure should be structurally safe but less durable, d) Structure should be adequately safe, should have adequate serviceability, 6. What is serviceability?, a) It refers to condition when structure is not usable, b) It refers to services offered in the structure, c) It means that the structure should perform satisfactorily under different loads, without, discomfort to user, d) It means that structure should be economically viable, 7. What is limit state?, a) Acceptable limits for safety and serviceability requirements before failure occurs, b) Acceptable limits for safety and serviceability requirements after failure occurs, c) Acceptable limits for safety after failure occurs, d) Acceptable limits for serviceability after failure occurs
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8. Which of the following format is used in limit state method?, a) Single safety factor, b) Multiple safety factor, c) Load factor, d) Wind factor, 9. Which of the following relation is correct?, a) Design Strength = Ultimate strength + Partial factor of safety, b) Design Strength = Ultimate strength – Partial factor of safety, c) Design Strength = Ultimate strength /Partial factor of safety, d) Design Strength = Ultimate strength x Partial factor of safety, 10. The strength of the column with helical reinforcement shall be ____ times the, strength of similar column with lateral ties., a) 2.0, b) 1.05, c) 3, d) 1.5, 11. In the reinforced beam section shown in the figure (not drawn to scale), the nominal cover, provided at the bottom of the beam as per IS 456-2000, is, , a.36, b.50, c.30, d.42
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12. Let the characteristic strength be defined as that value, below which not more, , than 50% of the results are expected to fall. Assuming a standard deviation of 4 MPa,, the target mean strength (in MPa) to be considered in the mix design of a M25, concrete would be, 1, a.18.42, 2, b.21.00, 4, c.31.58, d.25, 13. As per IS 456-2000 for the design of reinforced concrete beam, the maximum, allowable shear stress (τcmax) depends on the:, 1, a.grade of concrete and grade of steel, b.grade of concrete only, c.grade of steel only, d.grade of concrete and percentage of reinforcement, 14. A structural member subjected to compression has both translation and rotation, restrained at one end, while only translation is restrained at the other end. Effective, length factor recommended for design is ____, a.0.50, b.0.65, c.0.70, d.0.80, , 15.A reinforced concrete (RC) beam with width of 250 mm and effective depth of 400, mm is reinforced with Fe415 steel. As per the provisions of IS 456-2000, the minimum, and maximum amount of tensile reinforcement (expressed in mm2) for the section are,, respectively, 1, 250 and 3500, 2, 205 and 4000
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3, 270 and 2000, 4, 300 and 2500, 16. A reinforcing steel bar, partially embedded in concrete, is subjected to a tensile, force P. The figure that appropriately represents the distribution of the magnitude of, bond stress (represented as hatched region). Along embedded length of the bar, is, 1, , 2, , 3, , 4, , 17.Consider the singly reinforced beam shown in the figure below:, , At cross-section XX, which of the following statements, is TRUE at the limit state?, 1
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a.The variation of stress is linear and that of strain is non-linear, b.The variation of strain is linear and that of stress is non-linear, 3, c.The variation of both stress and strain is linear, 4, d.The variation of both stress and strain is non-linear, 18. For M25 concrete with creep coefficient of 1.5, the long-term static modulus of, elasticity(expressed in MPa) as per the provisions of IS:456-2000 is ________, , a.1000, b.10000, c.1500, d.15000, , 19. The development length of a deformed reinforcement bar can be expressed as Ld=ϕ×σs / k×τbd, From the IS : 456 - 2000, the value of k can be calculated as _______________., , a.2, b.4, c.6.4, d.1, , 20. According to IS 456–2000, which one of the following statements about the, depth of neutral axis xu,bal for a balanced reinforced concrete section is correct?, 1, xu,bal depends on the grade of concrete only, xu,bal depends on the grade of steel only, xu,bal depends on both the grade of concrete and grade of steel, 4, xu,bal does not depend on the grade of concrete and grade of steel
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21. Maximum strain at the level of compression steel for a rectangular section having, effective cover to compression steel as d’ and neutral axis depth from compression, face as xu is, (a) 0.0035 x (1-d’/ xu), (b) 0.002 x (1-d’/ xu), (c) 0.0035 x (1- xu / d’), (d) 0.002 x (1- xu / d’), 22. The factored loads at the limit state of collapse for DL+LL, DL+WL and DL+LL+WL combinations,, according to IS: 456-1978 are respectively, (a) 1.5DL+1.5LL, 1.2 DL+1.2WL, 1.5DL+1.5LL+1.5WL, (b) (0.9 or 1.5) DL+1.5 LL, 1.5 DL+1.5 WL, 1.2 DL+1.2 LL+1.2 WL, (c) 1.2 DL+1.2 LL, 1.5DL+1.5 WL, 1.5 DL+1.5 LL+1.5 WL, (d) 1.5 DL +1.5 LL, (0.9 or 1.5) DL + 1.5 WL, 1.2 DL+1.2 LL+1.2 WL, 23. A reinforced concrete member is subjected to combined action of compressive axial forces and, bending moment. If εc is the least compressive strain in the member, fy, the yield strain of steel and, Es, the modulus of elasticity of steel, the maximum permissible compressive strain in concrete, member will be, (a) 0.002, (b) 0.002+fy/(1.15Es), (c) 0.0035-0.75 εc, (d) 0.0035, 24. the span to depth ratio limit is specified in IS : 456- 1978 for the reinforced concrete beams, in, order to ensure that the, (a) tensile crack width is below a limit, (b) shear failure is avoided, (c) stress in the tension reinforcement is less than the allowable value, (d) deflection of the beam is below a limiting value, , 25. The modulus of rupture of concrete gives, (a) the direct tensile strength of the concrete, (b) the direct compressive strtength of the concrete, (C) the tensile strength of the concrete under bending, (d) the characteristics strength of the concrete
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26. the effective width of a reinforced concrete T-beam flange under compression, according to IS, 456-1978, given Io is the distance between the adjacent zero moments points, b is the breadth of, the rib and D is the thickness of the flange, is, (a) (lo/6) + B +6D, (b) lo+6 D, (c) (lo/6) +6D, (d) (lo/6) + B, 27. the cylindrical strength of the concrete is less than the cube strength because of, (a) the difference in the shape of the cross section of the specimens, (b) the difference in the slenderness ratio of the specimens, (c ) the friction between the concrete specimen and the steel plate of the testing machine (, d) the cubes are tested without capping but the cylinder are tested with capping, 28. The characteristic strength of concrete is defined as that compressive strength below which not, more than, (a) 10% of result fail, (b) 4% of result fail, (c ) 2% of result fail, (d) none of the above, 29. Distribution reinforcement in a simply supported slab, is provided to distribute, 1. Load, 2. temperature stress, 3. shrinkage stress, 4. all the above, 30. In an over-reinforced section, (a) Steel reinforcement is not fully stressed to its permissible value, (b) Concrete is not fully stressed to its permissible value, (c) Either (a) and (b), (d) Both (a) and (b), , 31. By over-reinforcing a beam, the moment of resistance can be increased not more than, , (A) 10 %
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(B) 15 %, (C) 20 %, (D) 25 %, 32. If Ac, Asc and A are areas of concrete, longitudinal steel and section of a R.C.C. column and m and, σc are the modular ratio and maximum stress in the configuration of concrete, the strength of, column is, , (A) σcAc + m σcAsc, (B) σc(A - Asc) + m σcAsc, (C) σc[A + (m - 1)ASC], (D) All the above, 33. In a simply supported slab, alternate bars are curtailed at________________?, , A. 1/4th of the span, B. 1/5th of the span, C. 1/6th of the span, D. 1/7th of the span, 34. If the modular ratio is , steel ratio is and overall depth of a beam is , the, depth of the critical neutral axis of the beam, is___________________?, A., B., C., D., , [m/(m – r)] d, [m/(m + r)] d, [(m + r)/ m] d, [(r – m)/m] d, , 35., As per I.S. 456 - 1978, the pH value of water shall be, A. less than 6, B. equal to 6, C. not less than 6, D. equal to 7, , 36.An R.C.C. beam not provided with shear reinforcement may develop cracks in its bottom, inclined roughly to the horizontal at, A. 25°, B. 35°, C. 45°, D. 55°, , 37.The amount of reinformcement for main bars in a slab, is based upon
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A. minimum bending moment, B. maximum bending moment, C. maximum shear force, D. minimum shear force., , 38.A continuous beam shall be deemed to be a deep beam if the ratio of effective span to overall, depth, is, A. 2.5, B. 2.0, C. less than 2, D. less than 2.5, , 39.The live load to be considered for an inaccessible roof, is, A. Nil, B. 75 kg/m2, C. 150 kg/cm2, D. 200 kg/m, , 40.The radius of a bar bend to form a hook, should not be less than, A. twice the diameter, B. thrice the diameter, C. four times the diameter, D. none of these., , 41.The shear reinforcement in R.C.C. is provided to resist, A. vertical shear, B. horizontal shear, C. diagonal compression, D. diagonal tension., , 42.The length of the straight portion of a bar beyond the end of the hook, should be at least
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A. twice the diameter, B. thrice the diameter, C. four times the diameter, D. five times the diameter, E., , seven times the diameter., , 43.Pick up the incorrect statement from the following: Tensile reinforcement bars of a rectangular, beam, A. are curtailed if not required to resist the bending moment, B. are bent up at suitable places to serve as shear reinforcement, C. are bent down at suitable places to serve as shear reinforcement, D. are maintained at bottom to provide at least local bond stress, 44.If the maximum bending moment of a simply supported slab is M Kg.cm, the effective depth of, the slab is (where Q is M.R. factor), A., , B., , C., , D., , E., 45.An R.C.C. roof slab is designed as a two way slab if, A. it supports live loads in both directions, B. the ratio of spans in two directions is less than 2, C. the slab is continuous over two supports, D. the slab is discontinuous at edges., , 46.A raft foundation is provided if its area exceeds the plan area of the building by, A. 10%, B. 20%
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C. 30%, D. 40%, E., , 50%, , 47.The maximum shear stress (q) in concrete of a reinforced cement concrete beam is, A., , B., , C., , D., , E., 48.The diameter of the column head support a flat slab, is generally kept, A. 0.25 times the span length, B. 0.25 times the diameter of the column, C. 4.0 cm larger than the diameter of the column, D. 5.0 cm larger than the diameter of the column, E., , none of these., , 49.In a slab, the pitch of the main reinforcement should not exceed its effective depth, A. three times, B. four times, C. five times, D. two times., , 50.As the percentage of steel increases, [A]. depth of neutral axis decreases, [B]. depth of neutral axis increases, [C]. lever arm increases, [D]. lever arm decreases
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[E]., , none of these.
