double shear
The shear to which a member is subject when the shearing stress is along two section planes.
Glossary
Glossary
double-saddle notch
At a corner of a log cabin, one of a pair of rounded notches cut on opposite sides of a
Glossary
double-run stairs
Two separate flights that start and finish at the same levels, and cross each other about the center point of
Glossary
double roof
A timber framing system in which the common rafters rest on purlins which provide intermediate support.
Glossary
double Roman tile
A Roman tile having an additional roll up the center of the tile that matches (and is parallel to) the
Glossary
double-rabbeted frame
A doorframe having recesses along both sides so that a door can be hung on either side of the frame.