Question

The prestress profile in mass-produced pretensioned slab units of 2.8 m span for normal residential slab units of 2.8 m span for normal residential buildings would generally be

• A. axial along centroidal axis
• B. parabolic below centroidal axis with zero eccentricity at ends
• C. straight along top kern
• D. straight along bottom kern

Answer 1

The correct option is D straight along bottom kern

The use of straight cable is necessary while pretensioning the slabs especially in mass production. For normal residential building we have tension at bottom. Thus cable profile used is straight.