The versatile CON/SPAN system provides efficient stormwater storage in a variety of footprints. Installation on a base slab foundation can be made watertight, which is ideal when dealing with high water table issues or subgrade soils sensitive to water infiltration.
Construction of cast-in-place strip footings beneath the unit legs and endwalls allows for a large open area in the center of each cell, which can be filled with a crushed stone or granular material to allow for infiltration or recharge by percolating runoff through the granular material inside of the foundation.
The CON/SPAN system is most commonly used on sites in which the depth from finished grade to storm sewer outlet elevation is 10’ or greater.
Here's some of the benefits you'll realize with the CON/SPAN system:
Superior Durability and Structural Integrity
- Distinctive shape of CON/SPAN unit consists of an arch top and vertical side walls
- Can be designed for any loading condition including HS 20-44, HS 25-44, AREMA (railroad), and aircraft loading
- Precast continuous foundation ensures structural integrity and eliminates differential settlement
- Manufactured from precast concrete in quality controlled environment – Superior quality over cast-in-place
Versatile Design Capabilities
- Full range of span & heights - Sized to be most economical fit
- Maximize available footprint – Large sections reduce footprint for deep, narrow applications greater than 8 feet
- Base Slab - Ideal solution when creating a water-tight system or when dealing with high water table issues or sub grade soils sensitive to water infiltration
- Strip Foundations - Construction of cast-in-place strip foundations beneath the unit legs and endwalls allows for a large open area in the center of each cell, which can be filled with a crushed stone or granular material to allow for infiltration
- Pedestal Wall Foundation - Create additional vertical rise through the use of a cast-in-place stem wall allows for the most storage in the smallest possible footprint.
Easy Inspection and Maintenance
- Large system ease inspection and maintenance access
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