Slab and beam component including RCC beam is provided within the slab, which depth is equal to the slab depth refers to the hidden beam. It also refers to a flat beam or concealed beam. The hidden beam forms an integral part of the frame structure and is usually used.BEAM With a slab foundation, the beam is the thick part of the concrete slab, intended to support the weight above it without sagging, or bending. With the proper steel reinforcement, most slab beams, also called the grade beam, will not sag with supports no further than 8 feet apart, depending on the weight.for more details of Slab and beam component download Autocad file ,cad drawing , dwg format.