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

Now architects engineers designers and contractors can easily and accurately size downspouts and gutters according to. This calculator uses the equations that are laid out in the smacna handbook. Sheet metal and air conditioning contractors national association 4201 lafayette center drive chantilly virginia 20151 1219 tel 703 803 2980 fax 703 803 3732. 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.