IS: 9556-1980 Code of Practice For Design and Construction of Diaphragm Walls

UDC 624-152-632-9:624-04. — Indian Standards Institution, 1980. — 24 p. + 2 p. of amendments (July 1984).This Indian Standard was adopted by the Indian Standards Institution on 26 May 1980, after the draft finalized by the Foundation
Engineering Sectional Committee had been approved by the Civil Engineering Division Council.Diaphragm walls are subjected to large horizontal forces due to earth pressures thereby causing heavy overturning movement at the foundation. The design of such structures involves special problems and this standard has been prepared with a view to providing guidance to a designer. Cast-in-place diaphragm walls are used in the field of hydraulic, civil, maritime and industrial engineering as positive impervious cutoffs for dams; as earth retaining structures for basements, subways, wells, and bridge foundations; as quay walls; and as foundations for structures. Diaphragm walls are also used as impervious cutoffs in excavations of basins, dry docks and locks, and are usually integrated with the main structure. Diaphragm walls of 1 m thickness have successfully been built in soft clays of density about 1’5 t/ma and 65 m depth in this country.