RCC Sheet 44

The load stress of a section can be reduced by

If jd is the lever arm and $\Sigma O$ is the toal perimeter of reinformcement of an R.C.C. beam, the bond stress at the section having Q shear force, is

If L is the effective span of a R.C.C. beam which is subjected to maximum shear $q_{max}$ at the ends, the distance from either end over which stirrups for the shear, are provided, is

If the maximum shear stress at the end of a simply supported R.C.C. beam of 16 m effective span is $10 kg/c{m}^2$, the length of the beam having nominal reinforcement, is

In the zone of R.C.C. beam where shear stress is less than $5 kg/c{m}^2$, nominal reinforcement is provided at a pitch of

If the maximum shear stress at the end of a simply supported R.C.C. beam of 6 m effective span is $10 kg/c{m}^2$, the share stirrups are provided for a distance x from either end where x is

The shear reinforcement in R.C.C. is provided to resist

If the shear stress in a R.C.C. beam is

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

If permissible working stresses in steel and concrete are respectively $1400 kg/c{m}^2$ and $80 kg/c{m}^2$ and modular ratio is 18, in a beam reinforced in tension side and of width 30 cm and having effective depth 46 cm, the lever arms of the section, is

An R.C.C. beam of 25 cm width has a clear span of 5 metres and carries a U.D.L. of 2000 kg/m inclusive of its self weight. If the lever arm of the section is 45 cm., the beam is

An R.C.C. beam of 25 cm width and 50 cm effective depth has a clear span of 6 metres and carries a U.D.L. of 3000 kg/m inclusive of its salf weight. If the lever arm constant for the section is 0.865, the maximum intensity of shear stress, is

If d is the diameter of a bar, $f_t$ is allowable tensile stress and $f_b$ is allowable bond stress, the bond length is given by

An R.C.C. beam of 6 m span is 30 cm width and has a lever arm of 55 cm. If it carries a U.D.L. of 12 t per m and allowable shear stress is $5 kg/c{m}^2$, the beam

An under-reinforced section means

If depth of slab is 10 cm, width of web 30 cm, depth of web 50 cm, centre to centre distance of beams 3 m, effective span of beams 6 m, the effective flange width of the beam, is

The reinforced concrete beam which has width 25 cm, lever arm 40 cm, shear force $6t/c{m}^2$, safe shear stress $5 kg/c{m}^2$ and B.M. 24 mt,

A per IS : 1343, total shrinkage for a pretensioned beam, is

If $M_d$ and $M_l$ 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 prestressed concrete beam of steel, is

If C is creep coefficient, f is original prestress in concrete, m is modular ratio, E is Young's modulus of steel and e is shrinkage strain, the combined effect of creep and shrinkage is