drainage classification
A system of drainage classification devised by the Soil Conservation Service of the US Department of Agriculture. The most porous […]
Glossary
Glossary
Glossary
drainage envelope
The materials which completely surround a pipe, providing support and/or protection.
Glossary
dragon beam, dragon piece
A short, horizontal piece of timber which bisects the angle formed by the wall plate at the corner of a
Glossary
dragons blood
A naturally occurring deep red resin; used as a tinting material, principally in varnishes.