The Next Generation in Precast Stormwater Detention
StormArc’s lightweight modular design delivers high-capacity storage and design flexibility in a compact footprint – simplifying delivery and installation.
Watch StormArc Work
This animation demonstrates how the StormArc works, utilizing its precast concrete arch design to maximize underground storage capacity, support efficient installation, and provide unmatched structural strength.
- Modules are delivered stacked, saving transportation time
- No crane or heavy equipment required
- System allows for flexible compact designs
- Simplified component handling supports safer installation processes
Why Engineers Choose StormArc
Design Versatility
- Flexible design adapts to any footprint
- Multiple height options for varying depths
- Tiered configurations for uneven sites
- Superior volume-to-footprint ratio
Concrete Confidence
- Arch design and bases add independent stability
- Reduced crushed stone requirement
- H-20 load-rated for sub-pavement and parking installs
- Long-term resistance to traffic stress
Why Contractors Rely on StormArc
No Crane Required
Standard excavator and a small crew is all it takes. Eliminates crane rental costs, scheduling delays, and the safety risk of overhead lifts.
Faster Job Completion
Modular, stackable design allows components to be installed immediately upon delivery, significantly accelerating project timelines.
Predictable Supply
StormArc’s licensed producers keep products in stock and can manufacture quickly, ensuring short lead times and faster project delivery.
Easier to Bid & Build
Modular, standardized components mean straightforward estimating, less waste, and fewer surprises on site from design through closeout.
Real-World Results
Holly Springs, NC
- Superior volume detention
- Integrated flow control
- Integrated flow control
- Quick modular installation
Suffolk Downs, MA
- Limited bearing pressure solution
- Tiered system heights
- Avoided utility relocation
- Landscape integration
Depot North Salem, NC
- Reduced footprint design
- Minimal excavation
- Unified system solution
- Reduced labor needs
Courier Square, SC
- Uniquely narrow footprint
- High-volume efficiency
- Worked around utilities
- No heavy crane needed
Start Your StormArc Design
Tell us about your project. Our engineers will help you design a StormArc system that meets your storage volume, site constraints, and budget requirements.
StormArc vs. Alternative Detention Systems
All comparisons based on a 100,000 cu.ft. detention design.
72
Truckloads Required
Stackable lightweight modular units — standard flatbed delivery
90–109
Truckloads Required
Large, cumbersome, non-stackable monolithic components
No Crane Required
No crane required. Installed with normal construction equipment.
Large Crane Required
Heavy crane, larger crew, increased hazards, longer install time.
Compact, Contained Footprint
Minimal street impact. Fits tight urban sites with ease.
Larger Footprint & Hazard Zone
Crane swing radius forces closure of surrounding areas.
Organized & Safe
Flat-stacked modules store compactly, safely, and efficiently.
Complicated & Hazardous
Tall upright sections require extensive safety management on-site.
The Installation Difference at a Glance
StormArc
Compact excavator · Small crew · Safe site
Alternatives
Large crane · Extended schedule · Higher risk
Where StormArc Excels
Commercial Developments
Parking lots, retail centers, and mixed-use developments where every square foot of surface area counts.
Municipal Projects
Public works stormwater compliance, green infrastructure programs, and regional detention facilities.
High-Density Residential
Townhome communities and multi-family developments with limited open space for traditional ponds.
Industrial Sites
Manufacturing facilities, distribution centers, and industrial parks requiring heavy load-rated systems.
Constrained Urban Sites
Projects with existing utilities, tight lot lines, or challenging soil conditions.
Redevelopment Projects
Urban retrofit projects where minimizing excavation and disruption is critical.
