| 释义 |
DictionarySeePitching pieceapron piece
apron piece[′ā·prən ‚pēs] (building construction) A beam that supports a landing or a series of winders in a staircase. apron piece, pitching pieceA horizontal wood beam, fixed into a wall and projecting horizontally, which supports the ends of carriage pieces, roughstrings, and joists at the landings of a wooden staircase. |