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Design for the limit state of collapse in bending
Following assumptions are taken in the design for the limit state of collapse in bending or flexure.
Plane sections normal to the axis remain plane after bending.
The maximum strain in concrete at the outermost compression fibre is taken as 0.0035 in bending.
The relationship between the compressive stress distribution in concrete and the strain in concrete may be assumed to be rectangle, trapezoid, parabola or any other shape which results in prediction of strength in good agreement with the results of tests. For design purposes, the compressive strength of concrete in the structure is assumed to be 0.67 times the characteristic strength. The partial safety factor for material strength, equal to 1.5, is applied in addition to this.
Shrinkage of concrete in prestressed members The shrinkage of concrete in prestressed members results in a shortening of ensioned wires and hence contributes to the loss of st
with a neat well labelled, explain reciprocal ranging in surveying.
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TIMBER Timber refers to wood utilized for construction works. Actually the word timber is derived from an old English word 'Timbrian' that means 'to build'. A tree that yields
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