Earthquake :: Masonry construction with rectangular masonry units
The design and construction of masonry walls using rectangular masonry units in general shall be governed by IS 1905:1987 and IS 2212:1991.
Well burnt bricks, solid concrete bricks and hollow concrete bricks having a strength not less than 35Mpa shall be
used. (see IS 1905: 1987 and IS 1597(part 2): 1992.
Cement mortar of ratio not less than 1:6 shall be used as specified in IS 4326 : 1993.
Masonry bearing walls built in mortar, unless rationally designed as reinforced masonry, shall not
be built of greater height than 15m subject to a maximum of four storey’s when measured from the mean ground level to the roof slab or ridge level.
The masonry bearing walls shall be reinforced in accordance with 8.41 of IS 4326: 1993,to make it a
sheer wall. The overall strengthening arrangements to be adopted consists of horizontal bands at plinth, bottom sill of windows, below the roof or floors, and vertical reinforcement bars at corners, junctions of walls and jams of doors windows and openings.