Boot
Boot turns up in 2 fields: geosynthetics, waterproofing. Here is what it means to the people in each one.
Boot in geosynthetics
Field-built geomembrane sleeve that seals a liner around a pipe or other penetration.
A boot is a sleeve of sheet fitted over the pipe and extrusion welded to a flat skirt, which is welded to the liner; the sleeve end is clamped to the pipe with a stainless band over sealant, or welded straight to it when the pipe is HDPE. It is the most labor-intensive detail on a liner job and a frequent leak point, so it gets full vacuum box or spark testing. Prefabricated boots are available for standard pipe sizes.
"Pipe boot on the sump riser is leaking at the band, so pull the clamp and reseal it."
Boot in waterproofing
A preformed or field-built collar that seals a pipe, rod or conduit where it passes through a membrane.
Penetrations are the most common leak points in any membrane. A boot is a molded rubber or membrane sleeve, or a stack of detail plies, that wraps the pipe and laps onto the field membrane, finished with a clamp or sealant at the top. Grouped pipes too close together for individual boots are a classic problem detail.
"Six conduits through the deck in a cluster, no way to boot them individually, get a pitch pocket."