Which type of beam provides better load-bearing capability due to end restraints?

A restrained beam is designed to provide better load-bearing capability because it has supports at both ends, which allows for the transfer of bending moments. The end restraints help to prevent excessive deflection and enable the beam to distribute loads more effectively. This leads to an increase in the overall strength and stability of the structure it supports.

In contrast, simply supported beams can only resist vertical loads at their supports without moment resistance. Cantilever beams are supported at one end while the other end is free, which can lead to significant bending and deflection challenges when loads are applied. Overhanging beams extend beyond their supports, which can complicate load distribution and can increase the risk of failure if not properly designed. These design differences highlight why a restrained beam better handles loads due to its enhanced stability and moment resistance compared to the other types.