REINFORCED CONCRETE DESIGN EXAM QUESTIONS AND ANSWERS 100% CORRECT!

The maximum moment of a simply supported beam whose span length is L, in meter, carrying a uniformly distributed load of w in N/m, is: - ANSWER-wL^2/8 Loads that are movable or replaceable on structure are known as - ANSWER-Live load It is one in which the lateral stiffness is less than 70% of the stiffness of the story above it - ANSWER-Soft storey A horizontal or nearly horizontal system acting to transmit lateral forces to the vertical resisting elements. It includes horizontal bracing system - ANSWER-Diaphragm These are inert material used in concrete which occupy more than 75% of the column of the hardened concrete product - ANSWER-Debris Steel elements such as wire, cables, bars, rods or strands of wires or a bundle of such elements used in pre-stressed concrete structures are called - ANSWER-Tendons What method of pre-stressing in which tendons are tensioned before concrete is cast in place? - ANSWER-Pre-tensioning This refers to the substance other than aggregate other than aggregate, cement or water added in small quantity normally less than 5% of the weight cement, to alter the properties of the concrete mix or the hardened solid - ANSWER-Admixture The minimum bend diameter for 10mm ø through 25mm ø bars - ANSWER-6db Bars larger than ___mm shall not be bundles in beams - ANSWER-36mm Minimum concrete cover cast against and permanently exposed to earth - ANSWER-75mm In ultimate strength design, the strength reduction factor ø for shear and torsion - ANSWER-0.85