IS 13920 : 1993 Ductile Detailing of Reinforced Concrete Structures Subjected to Seismic Forces - Code of Practice

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This standard covers the requirements for designing and detailing of monolithic reinforced concrete buildings so as to give them adequate toughness and ductility to resist severe earthquake shocks without collapse.

Provisions of this code shall be adopted in all reinforced concrete structures which satisfy one of the following four conditions.

The structure is located in seismic zone IV or V;
The structure is located in seismic zone III and has the importance factor ( I ) greater than 1.0;
The structure is located in seismic zone III and is an industrial structure; and The structure is located in seismic zone III and is more than 5 storey high.

NOTE - The definition of seismic zone and importance factor are given in IS 1893 : 1984.

The provisions for reinforced concrete construction given herein apply specifically to monolithic reinforced concrete construction. Precast and/or prestressed concrete members may be used only if they can provide the same level of ductility as that of a monolithic reinforced concrete construction during or after an earthquake.

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