A temporary structure built into a concrete form to keep mud out of a specific area. Once the concrete cures and the forms are stripped, the resulting void allows for the later installation of plumbing, electrical conduits, anchor bolts, or structural connections. Foam, wood boxes, and steel sleeves are commonly used.
Heard on the job
Make sure the blockout for the grease trap is nailed down tight so it doesn't float during the pour.
Also heard as
- boxout