Smacna Gutter And Downspout Sizing

It should be used to calculate required gutter size downspout size and downspout spacing for a given roof area.

Smacna gutter and downspout sizing.

The sheet metal and air conditioning contractors national association smacna is now providing a simple and effective downspout gutter sizing calculator. In response smacna s technical resources department has created a free downspout and gutter sizing calculator. In response smacna s technical resources department has created a free downspout and gutter sizing calculator. To limit the effects of thermal expansion in gutters 50 ft.

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. For additional information please see below. The sheet metal and air conditioning contractors national association smacna is an international trade association representing 3 500 contributing contractor firms.

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. This tool allows engineers architects designers and contractors to easily and accurately size downspout and gutters per smacna s architectural sheet metal manual. The downspout and gutter sizing calculator is located on the tools cad and apps page of the smacna website. Smacna notes that one of the most frequently asked architectural questions the association receives is about sizing gutters and downspouts.