Technical paper architectural sheet metal manual.
Architectural sheet metal manual gutters.
According to the architectural sheet metal manual a plain round standard downspout with an area of 12 57 square inches requires a nominal size of inches.
The sheet metal and air conditioning contractors national association smacna is now providing a simple and effective downspout gutter sizing calculator.
1 exam prep smacna architectural sheet metal 7 40.
History of architectural metals first used by the ship building industry lead used in the 1500s with rolled copper use starting in late 1600s new york city hall used copper for roofing circa 1764 a copper roof was used on the rebuilt old senate chamber in 1819.
The most common gutter shape is called k style so called because that s where the shape falls alphabetically in the list of gutter profiles in the sheet metal and air conditioning mechanic s national association architectural sheet metal manual.
Downspout sizes are based on table 1 3 dimensions of standard downspouts page 1 4 of the architectural sheet metal manual 7th edition.
In response smacna s technical resources department has created a free downspout and gutter sizing calculator.
This tool allows engineers architects designers and contractors to easily and accurately size downspout and gutters per smacna s architectural sheet metal manual.
This completely revised publication contains the most comprehensive set of recommended practices available for proper design and installation of custom fabricated architectural sheet metal including roof drainage system design for scuppers gutters and downspouts.
Rainfall wizard is based on table 1 2 rainfall data and drainage factors page 1 2 1 3 of the architectural sheet metal manual 7th edition.
This completely updated publication contains the most comprehensive recommended practices available for proper design and installation of custom fabricated architectural sheet metal including roof drainage system design for scuppers gutters and downspouts.
Smacna 1120 2012 architectural sheet metal manual.
Architectural sheet metal manual this completely revised publication contains the most comprehensive set of recommended practices available for proper design and installation of custom fabricated architectural sheet metal including roof drainage system design for scuppers gutters and downspouts.
The recommended gage for a galvanized gutter with a girth of 20 inches is a 19.
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 downspout and gutter sizing calculator is located on the tools cad and apps page of the smacna website.
Replaced in a 1900 renovation.
