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2.72 -C- Why does the City not require re-waterproofing prior to back fill?

Posted by Lori Byron on 21 Dec, 2013
Category: Category 2 - about potential recommendations

Frank Burdick’s Log Number: N/A
Submitted by: e-mail
Category (1,2,3): 2
Status: C
Estimated date to address: N/A

Q. Why does the City not require re-waterproofing prior to back fill?

A. The disconnection of the footing drains from the sanitary sewer does not typically disturb the waterproofing on the exterior of the foundation, as the sump discharge pipe comes out of the house above the level of the exterior waterproofing. If there is damage to the waterproofing, it will be restored at no additional cost.

Comments

Frank Burdick on 7 Jan, 2014:

This is not an accurate response.  Although the sump discharge, does exit the house above grade, it then ties into a the "air gap" that is connected to the underground lateral that leads to the curb drain or other areas.  The installation of this lateral, at the air gap, requires a substantial excavation.  This excavation damages the waterproofing as well as creates a permeable "bath tub" in backfill against the foundation,  for water to enter the basement or be constantly recirculated down to the footing drain below this area.  Please re-address this question.

Lori Byron on 10 Jan, 2014:

The installation of this lateral, at the air gap, requires a small area of excavation ranging in depth of 2-3 feet adjacent to the outside wall of the home. This excavation is backfilled and compacted by the contractors. In addition, if the contractor damages any waterproofing within this excavation, they are required to repair it. 

Frank Burdick on 11 Jan, 2014:

Who provided this information to you?  Who inspects the excavation and waterproofing prior to backfill.  Is there a typical "Inspection Card" that can be retreived from City Records for each home?  

Lori Byron on 13 Feb, 2014:

[CITY] 
The City plumbing inspector inspects the installation of the FDD discharge pipe. Documentation can be found on the City’s E-Trakit system at: http://etrakit.a2gov.org/