IS:13920- 1993- Detailing of reinforced concrete structures subjected to seismic forces
This standard covers the requirements for designing and detailing of monolithic reinforced concrete buildings so as to give them adequate toughness and ductility.
Flexural Member
Clause gives the general requirement, which flexural members should satisfy.
a) Longitudinal Reinforcement:
-The top as well as bottom reinforcement shall consist of at least two bars throughout the member length.
- The positive steel at a joint face must be atleast equal to half the negative steel at that face.
- The steel provided at each of the top and bottom face of the member at any section along its length shall be at least equal to one- fourth of the maximum negative moment steel provided at the face of either joint.
- in an external joint, both the top and the bottom bars of the beam shall be provided with anchorage length, beyond the inner face of the column, equal to the development length in tension plus 10 times the bar diameter minus the allowance for 90 degree bend.
- Clause no. 6.2.6 gives about the lap, splice in beam.
