Smacna Gutter Styles

Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage.

Smacna gutter styles.

Sheet metal and air conditioning contractors national association 4201 lafayette center drive chantilly virginia 20151 1219 tel 703 803 2980 fax 703 803 3732. Choice of over 32 colors for galvalume and aluminum. Proper gutter and downspout sizing rainfall intensity downspout capacity rainfall intensity is usually given in inches per hour for a five minute duration or one hour duration based on u s. 15 m is a practical maximum gutter length to be served by a downspout.

All styles are supplied in a standard 6 size and are manufactured in 10 lengths with a heavy duty 125 aluminum interior strap. Table 1 2 based on records through 1978 gives five minute intensities for selected cities. Calculations are based on level gutter capacity as experimentally determined by the national institute of standards and technology nist. 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.

All styles are supplied in a standard 6 size and are manufactured in 10 lengths with a heavy duty 125 aluminum interior strap. Optional support brackets also available. Other variations of the plain industrial looking box gutter were becoming popular for residential rain gutter installation. Dmi offers our box gutter in six standard smacna profiles see profiles tab below.

Dynaclad 70 full strength pvdf paint finish natural copper rheinzink or stainless steel. Available in up to 32 0 lengths. Custom profiles are also available. 5 inch 5 520 square feet.

If a roof s various drainage areas call for different size gutters go for the biggest one k style. They are available in a number of different styles including double bead single bead and reverse bead style. Downspout sizes must not exceed the bottom width of the gutter. Standard rain gutter profiles styles courtesy smacna box gutters like in style a above have the largest volume for the shape and amount of gutter material used were were finding favor in large commercial public and industrial applications by minimizing cost and maximizing water carrying capacity.

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. Every gutter system is unique so saf smacna gutter profiles are custom fabricated to suit individual project needs. Optional support brackets also available. To limit the effects of thermal expansion in gutters 50 ft.

Then use the chart below to see what size gutter you need. New orleans los angeles for example.