15 m is a practical maximum gutter length to be served by a downspout.
Smacna rain gutter support details.
Since the product is designed to withstand snow ice loads it is important to use the correct fastener s for this bracket.
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.
The additional support also described in detail 10 2b is required for these climates.
Includes rain intensity.
This is a typical detail of a gutter hung by straps.
Strap hung molded gutter.
This tool allows engineers architects designers and contractors to easily and accurately size downspout and gutters per smacna s architectural sheet metal manual.
The straps should extend a minimum of 6 onto the roof.
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.
Many of the earliest rain gutters in the u s.
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 all styles are supplied in a standard 6 size and are.
The smacna series gutter system is an exceptionally strong gutter product for industrial commercial type buildings.
Gutters downspouts the greatest value in gutters and roof drainage with a unique design that improves performance while complementing your roof s aesthetic qualities metal era s line of water drainage products is the only system that s factory mutual approved.
Straps are riveted or bolted to the outer edge at the gutter bead and attached to the roof with two brass screws.
The downspout and gutter sizing calculator is located on the tools cad and apps page of the smacna website.
Calculations are based on level gutter capacity as experimentally determined by the national institute of standards and technology nist.
To limit the effects of thermal expansion in gutters 50 ft.
Required support bracket fastener s.
If architectural specifications do not state fastener type use 10 x 2 flat head stainless screws.
Our smacna gutters are available in custom sizes shapes.
Downspout sizes must not exceed the bottom width of the gutter.
Before the late 19th century were made of wood and were cut or carved into a variety of shapes from simple boxy channels to those having more ornamental carved facades.
