Economics of Post-tensioned Circular Concrete Tanks in South Africa


When is strand cheaper than rebar as circumferential reinforcement in circular concrete tanks? In circular tanks smaller than a certain critical size, hoop tension is sufficiently low for effective crack-control by only moderate rebar. In this size range post-tensioning is uneconomical, but with increasing size, a critical point is reached where post-tensioning becomes the economic choice. So [...]

Economics of Post-tensioned Circular Concrete Tanks in South Africa2017-07-20T22:16:33+00:00

Tips for Specifying Circumferential Prestress


Now-and-then I see a reservoir tender that reminds me that prestress reservoir design is foreign to many Engineers. I will not attempt here to educate on reservoir prestress design. Actually, it is not necessary to be a prestress Engineer to specify reservoir prestressing – just go the design-supply route and let others do what they know best. Here [...]

Tips for Specifying Circumferential Prestress2017-07-14T16:30:15+00:00