This image is a detailed technical drawing of a sandwich slab construction joint, showing the layered components of a building's structural interface. The diagram illustrates the vertical wall connection to a base slab, with specific elements including a polyethylene backer rod, sealant, sealant cant, topping slab, base slab, protection course, and vertical wall. The cross-section provides a precise engineering view of how different construction materials are arranged to create a sealed, structured connection between vertical and horizontal building surfaces.
