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Infrastructure Design Manual Revised

 

HAA received the following notice from the City of Houston regarding revisions to the Infrastructure Design Manual related to detention, drainage, etc.

"As part of ongoing reviews and discussions regarding drainage, stormwater detention and flooding, the Department of Public Works and Engineering has issued 2008 revisions to the Infrastructure Design Manual, effective November 1, 2008, with the following exception:

Chapter 9.H.3.b will read:

Areas less than 1 acre:

Detention will be required at a rate of 0.20 acre feet per acre of increased impervious cover. The subdividing of larger tracts into smaller tracts of 1.0 acre and less will require the detention volume of 0.5 acre-feet per acre of increased impervious cover.

Single family residential tracts of 15,000 square feet in area or less are exempt from detention. This exemption does not apply if more than one dwelling unit is located on the tract.

The exemption for single family residential tracts less than 15,000 square feet is still being reviewed along with other Building Code issues. It is anticipated that proposed changes will be published in the second quarter of 2009. Changes regarding street/paving standards are still ongoing and expected to be published at that same time."

Questions concerning the Infrastructure Design Manual or any of the revisions can be submitted via email to:
cityengineer@cityofhouston.net.