Smacna Gutter Slope

The downspout and gutter sizing calculator is located on the tools cad and apps page of the smacna website.

Smacna gutter slope.

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. Metal era recommends that you verify all data obtained. These systems are an extension of our industrial series gutter systems with the profile features as shown in the sheet metal and air conditioning contractors national association smacna manual. This calculator uses the equations that are laid out in the smacna handbook.

Now architects engineers designers and contractors can easily and accurately size downspouts and gutters according to. This calculator serves as an information source only. 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.