Oversite concrete
When {Portland cement} was first continuously produced, towards the end of the nineteenth century, it became practical to cover the […]
Glossary
Glossary
Glossary
Resistance to the passage of heat
The requirements of the Building Regulations and practical advice in Approved Document L include provision for insulation to some ground
Glossary
Polythene and polyethylene sheet
Polythene or polyethylene sheet is commonly used as a {damp-proof membrane} with oversite concrete for all but severe conditions of
Glossary
double-headed nail, scaffold nail, form nail
A nail having two heads, one above the other; the upper head is driven with a hammer, and it is
Glossary
double-hung window, double-hung sash window
A window having two vertically sliding sashes, each closing a different part of the window; the weight of each sash is counterbalanced for
Glossary
double-lock seam
A type of seam between the edges of adjacent metal sheets; formed by making a double fold, then dressing down to form a
Glossary
double tenons
1. Two tenons, side by side, at one end of a member; also called a divided tenon. 2. Two tenons,
Glossary
double vault
A vault, usually domical, consisting of an inner shell separated from a higher outer shell.
Glossary
Foundations on sloping sites
The natural surface of ground is rarely level to the extent that there may be an appreciable slope either across
Glossary
Laying drains
Ground water (land) drains are laid in trenches at depths of 0.6 and 0.9 m in heavy soils and 0.9