RCC Structures Design Questions

• If W is the load on a circular slab of radius R, the maximum radial moment at the centre of the slab, is
• The floor slab of a building is supported on reinforced cement floor beams. The ratio of the end and intermediate spans is kept
• Spacing of stirrups in a rectangular beam, is
• If Md and Mt are the maximum bending moments due to dead load and live load respectively and F is the total effective pressure, for a balanced design of a prestreseed concrete beam of steel, is
• In a prestressed member it is advisable to use
• For a ribbed slab
• If the neutral axis of a T-beam is below the slab, the relationship between the flange width B, depth of neutral axis n, thickness of the slab ds, effective depth of the beam d, gross area of tensile steel At and the modular ratio m may be stated as
• If A is the sectional area of a prestressed rectangular beam provided with a tendon prestressed by a force P through its centroidal longitudinal axis, the compressive stress in concrete, is
• A pre-stressed concrete member is preferred because
• The maximum ratio of span to depth of a slab simply supported and spanning in one direction, is
• In a slab, the pitch of the main reinforcement should not exceed its effective depth
• An R.C.C. column is treated as short column if its slenderness ratio is less than
• After prestressing process is completed, a loss of stress is due to
• If Ac, Asc and A are areas of concrete, longitudinal steel and section of a R.C.C. column and m and σc are the modular ratio and maximum stress in the configuration of concrete, the strength of column is
• For a continuous floor slab supported on beams, the ratio of end span length and intermediate span length, is
• The ratio of the breadth to effective depth of a beam is kept
• If the width of the foundation for two equal columns is restricted, the shape of the footing generally adopted, is
• If p1 and P2 are effective lateral loadings at the bottom and top exerted by a level earth subjected to a superload on the vertical face of height h of a retaining wall, the horizontal pressure p per unit length of the wall, is
• The self-weight of the footing, is
• By over-reinforcing a beam, the moment of resistance can be increased not more than