IS 11293 -1993 Code Book PDF free download
This Indian Standard was adopted by the Bureau of Indian Standards, after the draft finalized by the Foundation and Sub-structures Sectional Committee had been approved by the River Valley Division Council. Grout curtains are established under the heel of concrete and masonry dams to prevent erosion and loss of water from the reservoir, and, in conjunction with the drainage, to reduce uplift pressure. This is created by drilling and grouting one, or more, lines of drill holes till a barrier or cut-off of desired impermeability is created. Design requirements for grout curtains for earth and rockfill dams are covered in Part 1 of the Standard. This part covers the design requirements of grout curtains for Masonry and Concrete Gravity Dams. For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance with IS 2 : 1960 ‘Rules for rounding off numerical values ( revised )‘. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard.
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