Prestressed and post-tensioned concrete floor slabs

Structure · Concrete Floor Slabs · printed page 57 (PDF page 58)

Book index entries

Concrete – Slabs Pre-Stressed and Post-Tensioned Pre-stressed and Post-tensioned Concrete Indoor Caulking Post-tensioned and Pre-stressed Concrete Floor Slabs Pre-stressed and Post-tensioned Concrete Floor Slabs

Text in the illustration

slab
steel cables installed near bottom of slab to provide tensile strength
post-tensioned concrete slab- one end of the cable is pulled tight after the concrete is poured
prestressed concrete slab- the cables are pulled tight prior to pouring the concrete and are let go as the concrete cures

Generated explanation

The illustration shows a concrete floor slab spanning between concrete supports, with parallel steel cables located near the bottom of the slab to provide tensile strength. Dashed lines indicate the cable paths within the slab. Two smaller sectional diagrams explain the difference in tensioning sequence. The post-tensioned example has one end of the cable pulled tight after the concrete is poured, while the prestressed example has cables pulled tight before pouring and released as the concrete cures.

Components

concrete floor slab steel reinforcing cables concrete supports

Materials

concrete steel