The modular ratio (m) is the ratio of the modulus of elasticity of steel to that of concrete. |
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Riddle: I am the ratio that transforms steel area into an equivalent concrete area. What am I? |
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True or False: The bond between steel and concrete is assumed to be perfect in the working stress method. |
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In the working stress method, the effective length (leff) for simply supported beams is calculated as ______. |
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Which of the following is a permissible stress in concrete for mild steel? A) 0.85 fck B) 0.87 fy C) 0.45 fck D) 0.36 fck |
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True or False: In an under-reinforced section, failure will occur due to concrete reaching its maximum permissible stress first. |
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False. In an under-reinforced section, failure occurs due to steel reaching its maximum permissible stress first. |
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In the design of a doubly reinforced section, the equivalent area of steel in terms of concrete for compression steel is ______. |
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Fill-in-the-blanks: The maximum tension reinforcement in a beam is limited to ______. |
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True or False: The effective depth (d) in beams is always greater than the overall depth (D). |
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The clear distance between supports plus effective depth or the actual span, whichever is less. |
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Which of the following is a common method for controlling deflection in beams? A) Increasing span B) Reducing load C) Adjusting depth D) Adding more steel |
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Riddle: I am needed in both tension and compression in a doubly reinforced beam. What am I? |
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True or False: The deflection limits for continuous beams are generally stricter than for simply supported beams. |
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Which parameter is crucial for determining the maximum shear stress in a beam? |
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In concrete design, the area of steel required for tension reinforcement is calculated based on ______. |
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Riddle: I carry loads and can bend, but my width and depth determine how much I can withstand. What am I? |
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True or False: In the working stress method, the steel and concrete are assumed to behave as non-linear materials. |
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False. The steel and concrete behave as linear elastic materials in the working stress method. |
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Fill in the blanks: The final deflection of beams should not exceed ______ of the span for normal loading conditions. |
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