built-up girder
Same as built-up beam.
A term applied to an HVAC system in which the fan is selected as an individual component and integrated in
A field-fabricated enclosure around an air-handling system, usually built on a waterproof concrete base which has a curb around it
Fabricated completely on the jobsite, as joinery fabricated from lumber of standard sizes.
The aggregate of the physical surroundings and conditions constructed by human beings, in contrast to those surroundings and conditions resulting