Glossary

A stair having one flight from the main floor to an intermediate landing and two side flights from that landing to the floor

A heavy bar across a door to prevent it from being opened, such as a plank dropped between metal holders on each

A manually operated sliding rod or bar attached to a door for locking it; a spring is not part of the locking

The finished frame surrounding a door; the visible frame.

1. The uppermost member of a doorframe. 2. A horizontal projection above a door.

An interval between two columns such as to admit two triglyphs in the entablature instead of one, as usual.