79. For the economical design of a combined footing to support two equal column loads, the projections of beams in lower tier are kept such that bending moment under column is equal to
81. If L is the overall length of a combined footing having A as its area, d being the distance between the centre of gravity of the base and centre of the base, the larger width b is
82. A structural member subjected to tensile force in a direction parallel to its logitudinal axis, is generally known as
83. The net area of round bars to resist the tension, is the area of cross section at
Page 12 of 30