Mechanical Upgrades / Replacement

University of Alabama
Bryant Denny Stadium Domestic Water Booster System Upgrades

HHB Engineers, P.C. served as Prime A/E for design and construction services for replacement of the domestic water booster pump systems at Bryant Denny Stadium.  The design included new booster pump systems for the entire stadium including the previously non-boosted lower bowl areas.   Only two systems were awarded for construction during this phase of the project – those serving largely the East and West portions of the stadium.

Project challenges included a compressed design and construction schedule as well as determining construction phase logistics.  We had to minimize downtime for the domestic water system in various occupied areas throughout the stadium during late summer and into the first part of football season.  Design related challenges included determining instantaneous demand for each of the 4 systems for the stadium, which can seat close to 102,000 fans, plus the thousands of support and other staff present during a home football game. The total number of flush fixtures (toilets and urinals) exceeds 1,600.  The two systems installed included a triplex system with three 60HP pumps, and a quad-plex system with four 60HP pumps.  Each system includes N+1 pumps for redundancy.  The East system was installed in the same location as the existing East system.  Piping was extended to the existing water entry for the lower bowl and intersected.  The West pumps could not fit at the same location as existing, and a new pump room was construction in the general vicinity below one of the ramps.  Piping was extended to intersect the existing West boosted system, the West lower bowl, and outside underground to back feed the South lower bowl.

Project Cost: $1.1M