Q. P is the prestressed force applied to tendon of a rectangular prestressed beam whose area of cross section is A and sectional modulus is Z. The minimum stress f on the beam subjected to a maximum bending moment M is

View solution

Q. If T and R are the tread and rise of a stair which carries a load w per square metre on slope, the corresponding load per square metre of the horizontal area, is

View solution

Q. The number of treads in a flight is equal to

View solution

Q. A short column 20 cm x 20 cm in section is reinforced with 4 bars whose area of cross section is 20 sq. cm. If permissible compressive stresses in concrete and steel are 40 kg/cm² and 300 kg/cm², the Safe load on the column, should not exceed

View solution

Q. The reinforced concrete beam which has width 25 cm, lever arm 40 cm, shear force 6t/cm², safe shear stress 5 kg/cm² and B.M. 24 mt,

View solution

Q. According to I.S. : 456 specifications, the safe diagonal tensile stress for M 150 grade concrete, is

View solution

Q. A foundation rests on

View solution

Q. For initial estimate for a beam design, the width is assumed

View solution

Q. If R and T are rise and tread of a stair spanning horizontally, the steps are supported by a wall on one side and by a stringer beam on the other side, the steps are designed as beams of width

View solution

Q. The advantage of a concrete pile over a timber pile, is

View solution

Q. If the permissible compressive stress for a concrete in bending is C kg/m², the modular ratio is

View solution

Q. If a bent tendon is required to balance a concentrated load W at the centre of the span L, the central dip h must be at least

View solution

Q. For M 150 mix concrete, according to I.S. specifications, local bond stress, is

View solution

Q. If the average bending stress is 6 kg/cm² for M 150 grade concrete, the length of embedment of a bar of diameter d according to I.S. 456 specifications, is

View solution

Q. Bottom bars under the columns are extended into the interior of the footing slab to a distance greater than

View solution

Q. Thickened part of a flat slab over its supporting column, is technically known as

View solution

Q. An R.C.C. beam not provided with shear reinforcement may develop cracks in its bottom inclined roughly to the horizontal at

View solution

Q. The effective span of a simply supported slab, is

View solution

Q. Pick up the incorrect statement from the following:

View solution

Q. The minimum cube strength of concrete used for a prestressed member, is

View solution