Dictionary
Styles
Pritzker
RIBA
References
CAD Scale Factors
AIA Numbering System
CMU Block Sizes
Dictionary
Styles
Pritzker
RIBA
CAD Scale Factors
AIA Numbering System
CMU Block Sizes
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sill
The lowest horizontal member of a frame structure, resting on and anchored to a foundation wall. Also, the horizontal member beneath a door or window opening.
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