Construction> Technical Drawings> Rebar Placement See Also: Windows & Doors | Interior Walls | Ledger Boards/2nd Floor | Bracing Walls | Cabinets/Heavy Fixtures | Plumbing/Electrical Utilities An Index of Technical Drawings "X-Ray" view of three stacked Grid-WALL™ Blocks showing maximum rebar placement. Rebar anchored in the foundation extends up into the walls and overlaps the vertical rebar. Please note: Diagonal rebar needed ONLY per structural engineering recommendation. See More Technical Drawings: Grid-WALL standard block | Grid-CORNER | Ledger Board | Rebar placement | Mono Slab Foundation | Solid Concrete Grid | Stack & brick footing | Truss Attachment | Windows, general | Flat Panel Windows | Arched Windows