Smacna Gutter Profiles

Calculations are based on level gutter capacity as experimentally determined by the national institute of standards and technology nist.

Smacna gutter profiles. Downspout sizes must not exceed the bottom width of the gutter. Dmi offers our box gutter in six standard smacna profiles see profiles tab below. 15 m is a practical maximum gutter length to be served by a downspout. Every gutter system is unique so saf smacna gutter profiles are custom fabricated to suit individual project needs including.

Smacna s technical resources committee completed wind uplift testing on custom fabricated fascia and coping architectural elements. To limit the effects of thermal expansion in gutters 50 ft. In addition to standard smacna profiles custom shapes are also available. Technical paper 2017 update for architectural fascia and coping wind tests report.

All smacna series gutters are sized by their rear dimensions. Available in up to 32 0 lengths. In response smacna s technical resources department has created a free downspout and gutter sizing calculator. 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.