Banded Slab / Beam & Slab

• The distinction between a “banded slab” and “beam & slab” system is that the former permits the transfer of moments into columns in the slab design while the latter do not

• As a guide, banded slab is used when the aspect ratio of grids (between X and Y direction) are less than 1.5

• PT beams are generally much wider as compared to conventional RC beams for the following reasons:

- To optimise slab direction design

- To allow for installation of tendons and anchorages beside columns at end of building