Foundation plan showing dimensions which provides details of footings, reinforcing sizes and layout, foundation elements, sub-floor ventilation and engineering information, reinforcing and contraction joints in concrete slabs, upgrading of existing foundations if an upper story is to be added, sub-floor bracing and foundation details
The foundation plan must be dimensioned and identify components of construction. For example, the width and depth of footing, steel size, type and placement, damp-proof membrane, mesh type and size, control joints, saw cuts and supplementary steel requirements, position of plumbing fixtures and pipe layouts, slab thickness, concrete strength, point load pads or thickenings.
Decks and patios should also be detailed on this plan.