oversite

From over- +‎ site.

oversite (not comparable)

1. (construction) Laid over the ground, or built above an existing site.
   • 2019 October 23, RAIL, page 70, image caption:

     The new station entrance on Cannon Street shortly after completion of the roof on September 12, and how it will look once opened and with oversite development in 2022.

oversite (plural oversites)

1. (construction) A layer of concrete underneath the ground floor of a building, as a seal
2. (construction) An oversite slab, a slab on grade, a flat, solid layer of concrete laid over prepared ground, usually serving as a base for flooring or for pouring the reinforced concrete floor slab (base plate).