Smacna Standards Gutters

The sheet metal and air conditioning contractors national association smacna is now providing a simple and effective downspout gutter sizing calculator.

Smacna standards gutters. Custom profiles are also available. In response smacna s technical resources department has created a free downspout and gutter sizing calculator. The capacity of a sloped rectangular gutter may be approximated by using a gutter cross section area not less than that of a semicircular gutter and a depth to width ratio of at least 0 75. News smacna s downspout and gutter sizing calculator.

One of the most frequently asked architectural questions smacna receives is on sizing gutters and downspouts. 15 m is a practical maximum gutter length to be served by a downspout. In response smacna s technical resources department has created a free downspout and gutter sizing calculator. All styles are supplied in a standard 6 size and are manufactured in 10 lengths with a heavy duty 125 aluminum interior strap.

The smacna series gutter system is an exceptionally strong gutter product for industrial commercial type buildings. Saf smacna gutters are an extension of the saf industrial series gutters but with profile features contained in the sheet metal and air conditioning contractors national association smacna manual. Dmi offers a full line of accessories including internal gutter support brackets custom under brackets mitered corners end caps splice plates expansion joints outlets downspouts elbows and downspout straps. Now architects engineers designers and contractors can easily and accurately size downspouts and gutters according to the specifications in smacna s architectural sheet metal manual 7th edition 2012.

To limit the effects of thermal expansion in gutters 50 ft. Dmi offers our box gutter in six standard smacna profiles see profiles tab below. This tool allows engineers architects designers and contractors to easily and accurately size downspout and gutters per smacna s architectural sheet metal manual. Smacna standards and manuals address all facets of the sheet metal and hvac industry including duct construction and installation indoor air quality energy recovery roofing and architectural sheet metal welding and commissioning.

Expansion allowances gutter specific expansion tables based on girth profile metal predicted annual δt expansion of building materials table with various expansion coefficients must be used for fascia and copings with consideration of both metal and substrate flat seam roof expansion guidance over 30 feet use batten seam design to allow for expansion. In response smacna s technical resources department has created a free downspout and gutter sizing calculator.