Gradex Consulting Ltd. - Residential Lot Grading Coordinators serving the City of Edmonton and surrounding communities since 2001.
REQUIREMENTS - DOWNSPOUTS

Downspouts are pipes that connect with a home's gutter system and carry rain water and snowmelt from the roof to the ground or storm service, providing proper rain water and snowmelt drainage and diversion. A functional downspout protects the home's roof, siding and foundation from water damage and helps prevent flooding of the home's basement.

Downspout Requirements:


•  The downspout must have an elbow and a hinged extension and/or concrete splash pad.
•  The downspout elbow should be directed away from the foundation walls toward the drainage swales.
•  Downspout extensions or splash pads must not project past the property line.


The following pictures and diagrams illustrate downspouts in different conditions (for reference only):

Downspouts with extensions direct water away from foundation walls This is an alternative downspout extension under concrete
 
This poor downspout location can generate a risk of basement flooding Downspouts connect to storm service
 

These diagrams illustrate how the water flows

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