Smacna Standards Gutters

In response smacna s technical resources department has created a free downspout and gutter sizing calculator.

Smacna standards gutters.

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. This tool allows engineers architects designers and contractors to easily and accurately size downspout and gutters per smacna s architectural sheet metal manual. 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.

To limit the effects of thermal expansion in gutters 50 ft. Ansi the american national standards institute has accredited smacna as a standards setting organization. Now architects engineers designers contractors and facility managers can easily and accurately size downspouts and gutters according to the specifications in smacna s architectural sheet metal manual 7th edition 2012. The smacna series gutter system is an exceptionally strong gutter product for industrial commercial type buildings.

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. 15 m is a practical maximum gutter length to be served by a downspout. Dmi offers our box gutter in six standard smacna profiles see profiles tab below. The downspout and gutter sizing calculator is located on the tools cad and apps page of the smacna website.

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

All styles are supplied in a standard 6 size and are manufactured in 10 lengths with a heavy duty 125 aluminum interior strap. In response smacna s technical resources department has created a free downspout and gutter sizing calculator.