double vault
A vault, usually domical, consisting of an inner shell separated from a higher outer shell.
Glossary
Glossary
Glossary
door knocker
A hinged knob, bar, or ring of metal, attached to the outside of an exterior door, enable a person to announce
Glossary
Doric order
In Classical architecture and derivatives, the column and entablature developed by the Dorian Greeks. Characterized by sturdy proportions, a simple capital, a frieze usually
Glossary
dormer window, dormer
A vertical window which projects from a sloping roof, placed in a small gable.
Glossary
double course, doubling course
A double layer of shingles or the like, one over the other, providing a minimum coverage of two thicknesses.
Glossary
double header
A header joist made of two pieces of lumber, fixed together by bolts or nails, to provide greater strength than a single
Glossary
double return stair, side flights
A stair having one flight from the main floor to an intermediate landing and two side flights from that landing to the floor