This Architectural Drawing is AutoCAD 2d drawing of Bathroom basin with slab cad blocks in AutoCAD, dwg file. You'll come across some limitations in style and design. If a concrete slab is made beyond the standard width, length, and depth limits, then its durability and stability will be limited. Standard measurements are a maximum of 7 x 3 foot and a depth of 0.75-1.5 inch.