RCC Structures Design In a doubly-reinforced beam if ‘c’ and ‘t’ are stresses in concrete and tension reinforcement, ‘d’ is the effective depth and ‘n’ is depth of critical neutral axis, the following relationship holds good mc/t = (d - n)/t (t + c)/n = (d + n)/n (m + c)/t = n/(d + n) mc/t = n/(d - n) mc/t = (d - n)/t (t + c)/n = (d + n)/n (m + c)/t = n/(d + n) mc/t = n/(d - n) ANSWER DOWNLOAD EXAMIANS APP
RCC Structures Design If diameter of a reinforcement bar is d, the anchorage value of the hook is 8d 16d 4d 12d 8d 16d 4d 12d ANSWER DOWNLOAD EXAMIANS APP
RCC Structures Design Total pressure on the vertical face of a retaining wall of height h acts parallel to free surface and from the base at a distance of h/2 h/4 h/3 2h/3 h/2 h/4 h/3 2h/3 ANSWER DOWNLOAD EXAMIANS APP
RCC Structures Design The neutral axis of a T-beam exists Within the flange All listed here Below the slab At the bottom edge of the slab Within the flange All listed here Below the slab At the bottom edge of the slab ANSWER DOWNLOAD EXAMIANS APP
RCC Structures Design If the tendon is placed at an eccentricity e below the centroidal axis of the longitudinal axis of a rectangular beam (sectional modulus Z and stressed load P in tendon) the stress at the extreme top edge Is decreased by Pe/Z Is increased by PZ/e Remains unchanged Is increased by Pe/Z Is decreased by Pe/Z Is increased by PZ/e Remains unchanged Is increased by Pe/Z ANSWER DOWNLOAD EXAMIANS APP
RCC Structures Design 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 25 cm 30 cm 35 cm 20 cm 25 cm 30 cm 35 cm 20 cm ANSWER DOWNLOAD EXAMIANS APP
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