Foundation plan indicates the type of steel beam, location of pipes, and type of footing.

• A. Site Plan
• B. Foundation Plan
• C. Electrical Plan
• D. Plumbing Plan

Answer: (B)

The main idea here is understanding what the foundation plan communicates about the building’s base. A foundation plan shows the structural elements that sit at or below ground level—footings, foundation walls, grade beams—and where they support the structure above. It also marks locations where pipes or penetrations pass through the foundation or slab, and notes the type of footing used. This combination of structural support details and service penetrations is exactly what needs coordination at the foundation stage, so builders know how to place footings and where steel beams will rest, while avoiding conflicts with plumbing.

Other plans focus on different scopes: a site plan outlines the building’s footprint relative to property lines and terrain; an electrical plan maps wiring, outlets, and panels; a plumbing plan shows interior plumbing and fixtures. Those do not primarily convey the foundation-level details described, which is why this plan is the best match.