IS 5878 -1976 Code Book PDF free download
This Indian Standard ( Part V ) was adopted by the Indian Standards Institution on 31 August 1976, after the draft finalized by the Water Conductor Systems Sectional Committee had been approved by the Civil Engineering Division Council, I).2 This Indian Standard was first published in 1971 and is being revised with a view to keeping abreast with the technological developments that have taken place in the sic!d of tunnel design and construction. The construction of tunnels involves a large number of problems. Because of the great extent of variations in the nature of the work many different kinds of conditions are encountered which for maximum economy, consistent with technical requirements should be treated differently. This standard covers recommendations which would be generally applicable to construction of tunnels for the assistance of engineers engaged on such projects. This standard should, however, be used with caution since due to the very nature of the subject it is not possible to lay down detailed specifications to cover each and every possible case and the discretion of the engineer-in-charge would be required in some cases. Lining in tunnels is technically an important component and generally constitutes 30 to 40 percent of the total cost of the tunnel. Therefore lining operation requires considerable study and careful planning. Tunnels forming part of ‘water conductor system have to be invariably lined with cement concrete from structural and hydraulic considerations with some exceptions when the rock is extremely hard, sound and massive like granite and/or where the tunnel may be in operation for short periods in a year,
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