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TableĀ 2 Post-tensioning process of steel bars.

From: Experimental Study on Waterproofing Properties of Putty-Based Composite Rubber Strip for Underground Post-Tensioned Precast Concrete Structures

Post-tensioning steps ID of post-tensioning bar Stress at 1st pressure gauge (MPa) Stress at 2nd pressure gauge (MPa) Post-tensioning tensile force (kN)
1 1,6 20.7 20.1 100
2 3,4 20.7 20.1 100
3 2,5 20.7 20.1 100
4 1,6 29 28.2 140
5 3,4 29 28.2 140
6 2,5 29 28.2 140
7 1,6 37.27 36.26 180
8 3,4 37.27 36.26 180
9 2,5 37.27 36.26 180