In a beam the local bond stress Sb, is equal to

More Questions from RCC Structures Design

• Combined footing detailing — when the computed shear stress in a combined footing exceeds 5 kg/cm², what configuration of nominal stirrups should be provided for adequate shear resistance and confinement?
• T-beam effective flange — the portion of slab that may be considered to act effectively with the rib (web) of a T-beam depends on which geometric parameters?
• Bond and anchorage — for M 150 mix concrete as per Indian practice, the recommended local bond stress (unit bond stress) is closest to:
• Preliminary proportioning — for an initial estimate during beam design, a reasonable starting assumption for beam width (breadth) as a fraction of span is:
• Footing detailing under columns — bottom reinforcement bars passing beneath a column should be turned and extended into the footing slab interior by a distance not less than:
• Two-way slab design — a slab simply supported on all edges with corners free to lift should be designed using which classical method?
• Prestressing losses along a curved tendon — if k is the wobble (wave) friction coefficient, μ is the coefficient of friction, R is the radius of curvature, and x is distance from an anchorage, what is the tension ratio T(x)/T₀?
• Retaining structures — up to what retained height are cantilever (stem) reinforced concrete retaining walls generally considered safe and economical without counterforts?
• Shear in concrete — according to IS 456 working-stress traditions for M 150 concrete, the safe diagonal tensile stress (permissible shear stress in concrete without shear reinforcement) is approximately:
• Working-stress design in reinforced concrete: If the permissible compressive stress in bending for concrete is C (in kg/cm²), what is the appropriate modular ratio m to be used for transformed-section analysis?

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