Construction efficiency, resiliency to poor weather, design flexibility, and faster installation are all valued benefits of modular precast concrete tanks.
Modular precast detention tanks and cast-in-situ tanks are both concrete-based alternatives for on-site stormwater detention (OSD). These systems manage incoming stormwater flows and temporarily store them to prevent local flooding.
The key point of difference between these two systems is their fabrication process. As their name suggests, ‘precast’ modular solutions are fabricated off-site in a controlled factory environment.
In comparison, cast-in-situ systems require formwork, pouring, and curing with multiple trades on-site throughout their fabrication.
Consequently, modular precast tanks result in faster on-site project timelines than cast-in-situ methods. Delivered ready to install, these systems ensure seamless installation, reduce labor costs, and minimise time on-site with their ability to be immediately deployed upon site arrival.
Precast concrete tanks are manufactured in dedicated facilities. Their production is optimised to ensure consistent quality, structural performance, and reduced risk of defects. Our locally manufactured precast range includes MegaVault and AtlanVault.
Precast fabrication also provides benefits in wet weather periods, which can delay cast-in-situ projects. The ability to fabricate off-site ensures production can continue despite poor weather, and their quick installation leads to fewer weather delays on-site.
Depending on the volume and module count of the detention tank, modular solutions can be deployed in days to weeks – compared to months for cast-in-situ alternatives.
Precast solutions offer flexible designs and the ability to tailor their footprint to meet many different site specifications.
The modules of these systems are reconfigurable and customisable, allowing easier incorporation of features such as maintenance access points, filter bays, weir walls, and inspection channels.
In terms of site risk, modular tank solutions require less on-site work and reduce the length of open excavations. This ensures cleaner, safer sites with less exposure to heavy construction activities.
