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  2. Sheet Metal and Air Conditioning Contractors' National ...

    en.wikipedia.org/wiki/Sheet_Metal_and_Air...

    The Sheet Metal and Air Conditioning Contractors' National Association (SMACNA; pronounced 'Smack'-'Nah') is an international trade association with more than 4,500 contributing contractor members [1] in 103 chapters [2] throughout the United States, Canada, Australia and Brazil.

  3. J.C. Cannistraro - Wikipedia

    en.wikipedia.org/wiki/J.C._Cannistraro

    J.C. Cannistraro, LLC (commonly referred to as Cannistraro) is a privately held mechanical construction firm headquartered in Watertown, Massachusetts.The company provides HVAC, fire Protection and facilities maintenance services for large mechanical plants at hospitals, universities, laboratories, and many other facilities.

  4. Sheet Metal Workers' International Association - Wikipedia

    en.wikipedia.org/wiki/Sheet_Metal_Workers...

    The Sheet Metal Workers' International Association (SMWIA) was a trade union of skilled metal workers who perform architectural sheet metal work, fabricate and install heating and air conditioning work, shipbuilding, appliance construction, heater and boiler construction, precision and specialty parts manufacture, and a variety of other jobs involving sheet metal.

  5. International Association of Sheet Metal, Air, Rail and ...

    en.wikipedia.org/wiki/International_Association...

    Employed in a variety of occupations – from architectural sheet metal work, to fabricating, installing, and servicing HVAC systems, to shipbuilding and railroad work, they use specialized tools to cut, roll, bend, and shape flat pieces of metal into ductwork, airplane wings, car bodies, refrigeration units, and building facades, among many ...

  6. Shop drawing - Wikipedia

    en.wikipedia.org/wiki/Shop_drawing

    Some fabricators, such as cabinet and casework suppliers, prefer not to rely on the contractor’s verification and will verify the dimensions with their own personnel. [ 2 ] millwork and casework, find application in projects including commercial offices, retail stores, parks, hotels, shopping malls, restaurants, upholstery for furniture items ...

  7. Duct (flow) - Wikipedia

    en.wikipedia.org/wiki/Duct_(flow)

    Ducts for air pollution control in a 17000 standard cubic feet per minute regenerative thermal oxidizer (RTO). A round galvanized steel duct connecting to a typical diffuser Fire-resistance rated mechanical shaft with HVAC sheet metal ducting and copper piping, as well as "HOW" (Head-Of-Wall) joint between top of concrete block wall and underside of concrete slab, firestopped with ceramic ...