Smacna Gutter Sizer

Smacna downspout and gutter sizing calculator.

Smacna gutter sizer.

The smacna series gutter system is an exceptionally strong gutter product for industrial commercial type buildings. We recommend resource library read more. Resources aluminum series acm series column covers fastener series zinc series testing data aama pdf astm pdf gutter sizing sheet metal gages order literature northclad gutter size requirement calculator this calculator uses current data to calculate the required size of gutter as well as number and size of downspouts based on your input. The downspout and gutter sizing calculator is located on the tools cad and apps page of the smacna website.

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. This application runs the equations laid out in the smacna handbook. For additional information please see below. Downspout sizes must not exceed the bottom width of the gutter.

15 m is a practical maximum gutter length to be served by a downspout. The sheet metal and air conditioning contractors national association smacna is an international trade association representing 3 500 contributing contractor firms. It should be used to calculate required gutter size downspout size and downspout spacing for a given roof area. Calculations are based on level gutter capacity as experimentally determined by the national institute of standards and technology nist.

Smacna notes that one of the most frequently asked architectural questions the association receives is about sizing gutters and.