- A beam-and-slab system uses a one-way slab supported by beams cast compositely with the slab, forming an efficient floor system. - The slab is designed as a continuous slab using continuous beam theory or a simplified coefficient method. Beams act as L-beams on edges and T-beams interiorly. - T-beams and L-beams save weight while providing a greater lever arm for strength and stiffness over conventional beams. Ensuring the beam and slab are securely connected requires consideration of vertical and horizontal shear forces.