The floor plan:
The schematic plan shows the locations of lamps, switches, duplex outlets, cable outlets, phone outlets, chime units, exhaust fans, smoke detectors, heat registers, garage door openers, and interconnecting wiring.
The foundation plan is for a slab foundation. Slab foundations have better temperature control and sound control properties than raised foundations.
The foundation plan dimensions the slab and shows footings for exterior walls, interior bearing walls, interior braced walls, and unit partitions. It shows landings, garage drains, and post piers. A footing detail, which is sometimes on a second sheet, describes the construction of the footings.
The roof plan dimensions the planes, shows the vents, calls out the slopes, and describes the overhangs.
Elevations show all sides, and sometimes a midsection view as well. Elevations can have as many as four sheets.