Architectural Design Standards

September 23, 2009

 

ADS 4.13 Gutters, Downspouts, & Scuppers

Commercial, Mixed-Use, Civic
I II III IV

ADS 4.13.1 Intent.

Building devices used to control rainwater shall be compatible with the roofing system and shall not dominate the facade of a building. Parapets and cornices shall not be interrupted by stormwater elements.

Standard:

ADS 4.13.2 Gutters.

Exposed gutters are prohibited for use with flat roofs.

ADS 4.13.3 Downspouts.

Exposed downspouts shall only be allowed at interior corners.

ADS 4.13.4 Scuppers.

Parapets and cornices shall be continuous above a scupper.

ADS 4.13.5 Materials.

Gutters and downspouts shall be constructed of high-quality, commercial-grade metal.

Gutters, Downspouts, & Scuppers
diagram drawing of location of gutters, downspouts and scuppers on a building plan

Don’t Do This:
photo of the exterior of a building with a flat roof and exposed gutters

 

 

These exposed gutters should only be used with a

pitched roof; the exposed downspouts should be located

at interior corners.

 

 photo of a commercial building with downspouts on the exterior corners

 

 

These downspouts are incorrectly located at the

exterior corners of the building.

 

Do This:
photo of an entrance of a commercial building with downspouts located on the interior corners

 

 

Exposed gutters are not used with the flat roof section of the roof.

Exposed gutters are allowed to be used with pitched roof over

the entry, but the downspouts would need to be located at an

interior corner.

 

 photo of an entrance of a commercial building with downspouts located on the interior corners

 

 

These downspouts are correctly located at the interior corner

of the building.

Effective on: 1/1/1901