Rotation about wedge -:To prevent this (a) Line of resistance/thrust at any section should be within middle third of arch height. (b) Thickness of arch and its curve are so designed that time of thrust atleast fall within the section and crosses each joint away from edge.
590,000
625,000
6% off
1,499
2,499
40% off
590,000
625,000
6% off
5.0
590,000
0.0
5.0
5.0
4.5
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