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Average loss of force due to elastic deformation of concrete AP = 0.5 x 4.05 x 6.55 x 150 x 10"3 = 1.99 kN

The loss, which has been conservatively based on the maximum concrete stress rather than the stress averaged along the length of the tendon, is only 1% of the jacking force and will be neglected.

Po = jacking force = 199.1 kN n = 0.19 (recommended for strand)

k = 0.0085 (from Post tensioned concrete floors: Design handbook) ยก8a\

Span 2-3

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