capping piece

capping piece, cap piece, cap plate

A piece of timber covering the heads of a series of uprights or other vertical structure.
References in periodicals archive ?
remove all failed lead parapets / copings and replace with approved upvc capping piece. remove and replace the damaged ceiling tiles to the teaching spaces below.
This is skinned with a plywood timber decking using a warm roof construction, and clad externally entirely with post-patinated copper clad between the ribs with an SS capping piece along each rib line.
But over time "capping pieces" sealing the gaps where the iron is bolted together can fall off, allowing water to get in and cause damage.
But, over time, "capping pieces" which seal the gaps where the iron is bolted together can fall off, allowing water to get in and cause damage.
But over time "capping pieces" which seal the gaps where the iron is bolted together can fall off, allowing water to get in and cause damage.