*PLUMBERSSTOCK EXPERT* responded:
Hi! Thank you for posting a question regarding our ADS 60" x 24" x 12" Arc 24 Type Septic Leaching Chamber. With regard to your question, we have contacted ADS and hope to hear from them soon. Please check back in with us at a later time, or leave your email address below and we can contact you as soon as we have the answer. But, if this may be of help, Arc chambers can be installed to meet an H-10 live load (16,000 lbs/axle). Backfilling with a minimum of 12" of properly compacted cover is required for these aplications. But, it is also possible that it can vary from place to place. Before installing the chambers, it is also recommended to check with your State or Local codes for minimum separation between trench lines. Here is the Sell Sheet for more information about this product. We hope this helps. If you're interested in purchasing the ADS 60" Arc 24 Type Septic Leaching Chamber, just click the "Add to Cart" button, enter your zip code and you'll be all set. Thank you for visiting PlumbersStock.com. Have a wonderful day!