FOR IMMEDIATE RELEASE
Horizon Bay Congregate Living Facility Uses Oldcastle Precast, Inc. Green Storm Water Detention Infrastructure
March 2011 Tampa, FL –- Oldcastle Precast, Inc. had the unique opportunity to manufacture and install one of their cutting-edge precast products-- Storm Capture Module System, a subsurface storm water detention structure, specifically engineered and designed to accommodate both the storm water storage capacity demands and the load-bearing needs of the land use above them, at the new Horizon Bay Congregate Living Facility located in Tampa, Florida. The Horizon Bay project needed to be able to capture stormwater and pipe it to 6,572 CF of stormwater detention under the parking area to absorb and detain the storm water and allow water to slowly infiltrate into the ground assisting in recharging the groundwater.
Limited available site space necessitated the use of an underground storm water detention structure beneath the facility parking lot. Underground detention was the only practical choice according to design engineer Fuxan Engineering of Odessa, FL. An overflow pipe led to storm sewers, but the majority of the storm water would be infiltrated back into the ground; a common Low-Impact-Development (LID) practice in Florida that serves to help recharge the aquifer. The Storm Capture Module System – a Green Infrastructure System - provided a much better value proposition to the Owner and Engineer in place of the plastic underground storage chambers originally proposed for the site.
The Storm Capture Module system is ideally suited for this type of underground detention application due to its stand-alone, traffic bearing design which does not rely on final paving and associated stone underlayment for structural capacity.
The Storm Capture Detention Modules are constructed of high-strength structural concrete. Their ability to support traffic on the parking lot allowed for a 50% reduction in thickness of base rock required between the pavement and modules, as well as a 20% reduction under the modules, as compared to the originally planned plastic chambers.
The completed system design for Horizon Bay included 37 Storm Capture Modules. Each module is constructed of precast reinforced concrete with interior dimensions of 6’x12’x2.5’ tall, with open bottom for infiltration. Four of the modules incorporated standard inlet grates to allow storm water direct entry from the parking lot into the system. This eliminated the need for the four separate inlet structures originally designed into the project. A precast splash pad was installed below each inlet grate to prevent scour of the bedding material. In addition, the inlet grates are used for direct access to the modules for inspection and cleaning as needed. Each module has large conveyance windows into adjacent modules to allow flow equalization, as well as access for maintenance.
This was the first project where Ripa Construction used the Storm Capture Module system. Ripa Construction’s project managers stated that the modules were a key component to providing access for a very limited site and did not require ongoing maintenance or cleanout during construction. The initial savings experienced from the reduction of aggregates in the foundation, backfill, and under the pavement are hard, tangible costs. Ripa believes that coupling those savings with the experience they gained in the ease and speed of installation and lack of construction maintenance will make this system very useful in future projects.
About Oldcastle Precast, Inc.:
Oldcastle Precast, Inc is the leading manufacturer of precast and polymer concrete products in the U.S. Providing engineered product solutions nationwide to a number of market sectors including: Water - Transportation - Power & Energy -Communications
Engineering Services - Construction Services - Government/Military. Oldcastle Precast is part of Oldcastle Building Products. For more information please visit www.oldcastleprecast.com.
Contact: Brad Boulton
Oldcastle Precast (239) 574-8896
Submitted by: Oldcastle Precast, Inc. National Sales, Marketing, and Engineering phone: 888-965-3227 http://www.oldcastleprecast.com/
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