Use the chart below to figure out how many extra downspouts you need.
Smacna type a gutter.
In response smacna s technical resources department has created a free downspout and gutter sizing calculator.
Adding a 2 by 3 rectangular downspout for instance boosts your gutter s capacity by 600 square feet of drainage area.
One of the most frequently asked architectural questions smacna receives is on sizing gutters and downspouts.
This tool allows engineers architects designers and contractors to easily and accurately size downspout and gutters per smacna s architectural sheet metal manual.
In addition they are attached to the home with a visible half round hanger.
As with gutters a downspout s capacity must match or exceed the expected runoff.
The sheet metal and air conditioning contractors national association smacna is now providing a simple and effective downspout gutter sizing calculator.
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.
This wizard makes it easy to calculate the roof design area by providing various shape calculations and the calculation for vertical walls area per international plumbing code ipc.
Smacna downspout gutter calulator.
All styles are supplied in a standard 6 size and are manufactured in 10 lengths with a heavy duty 125 aluminum interior strap.
One of the most frequently asked architectural questions smacna receives is on sizing gutters and downspouts.
The smacna series gutter system is an exceptionally strong gutter product for industrial commercial type buildings.
These gutters are a type of half round gutters and have the bead on the outside of the gutter where it is more visible.
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.
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.
News smacna s downspout and gutter sizing calculator.
Smacna series gutters style a.
Many people choose these style gutters because they are very aesthetically pleasing and will add a lot of class to your home.
Sheet metal and air conditioning contractors national association 4201 lafayette center drive chantilly virginia 20151 1219 tel 703 803 2980 fax 703 803 3732.
In response smacna s technical resources department has created a free downspout and gutter sizing calculator.
Smacna a standards setting organization based in chantilly va.
