Stay ahead of fines and failures.

• Secondary containment is critical to prevent hazardous spills from reaching soil or water, and it's often required under regulations such as EPA’s SPCC (40 CFR Part 112) and RCRA.
• Secondary containment should be sized based on the largest container’s volume plus freeboard—typically around 10% for rain or surge protection.
• The EPA recommends maintaining documentation of these calculations in your SPCC Plan for inspection readiness.

Square Containments

Calculator Workflow

1. Begin by entering the dimensions of your primary containment(s) using the calculators above to calculate the total capacity. You can enter measurements in feet, inches, meters, or millimeters, and view the results in gallons, barrels, or liters for both square and circular containments.
2. Enter the total capacity of your primary containment(s) that will be inside of your secondary containment system.
3. Enter the percentage of required freeboard.
4. Choose which Muscle Wall system works best for your site requirements.
5. Take note of your results and reach out to a Muscle Wall team member for more information.

READY TO PROTECT WHAT MATTERS MOST?

Don’t wait for the next flood, spill, or emergency to take action. Muscle Wall offers scalable, reusable barrier systems trusted by municipalities, contractors, and industrial operators nationwide. Whether you’re preparing for seasonal storms or managing critical infrastructure, we’re here to help you build resilience—fast.

Talk to our team today or request a custom quote to get started.