Easi-Span Building: Post-Tensioning

Post-tensioned and prestressed reinforcing is a method of construction used in the roof and floor of Easi-Span precast buildings. These are used to enable the floor and roof to achieve a level of water tightness superior to that of regular precast concrete.

When post-tensioned, the continuous wire strand, in a greased plastic sheath, is laid in the fresh concrete of both the roof and floor at the time of casting. Prior to removal from the form and after building assembly, the strand is post-tensioned, placing the concrete in compression.

Post-tensioned elements are designed to be 40 percent more resistant to punch/shear impacts than conventionally reinforced designs of the same size. Elements are virtually impermeable to moisture or gas penetration without the need of roof liners or sealers.