branch duct
An air duct which branches from a main duct; at this point the main duct is reduced in cross-sectional area.
An air duct which branches from a main duct; at this point the main duct is reduced in cross-sectional area.
1. The frame of a building in which the resistance to lateral forces or to frame instability is provided by diagonal bracing,
A small, corrugated metal strip at 1 6 8 long nailed to wall sheeting or studs. They are inserted into
A table indicating the length of hypotenuses for right isosceles triangles with legs of various lengths; used by carpenters in cutting wood braces