Single Mailbox with Recycled Rubber Support Post in Type 4 Foundation

Report Number(s): 0-6946-R2

Description: An Elite No. 1-A (Model #E1600B00) standard arched-top medium size mailbox from Solar Group, Inc., a division of Gibraltar Industries, was attached to the top of a recycled rubber support post at a height of 42 inches above grade. The mailbox, which weighed 7 lb, had approximate dimensions of 11 inches tall × 8¾ inches wide × 21½ inches deep. Attachment of the Elite mailbox to the post was accomplished using a mailbox bracket (DHT #161443), two extension brackets (DHT #148938), and associated SAE grade 5 bolts, nuts, and washers. The mailbox with the attachment brackets and hardware weighed 10 lb. The recycled rubber support post was inserted into a Type 4 foundation socket (DHT #160891) and secured with a tapered semi-circular HDTP wedge (DHT #160892) on the impact side. The foundation socket was installed flush with the surface of a 12-inch diameter × 30-inch deep unreinforced concrete foundation. The concrete was specified as TxDOT Class B having a minimum 28-day unconfined compressive strength of 2000 psi.

Test Level: 3

MASH Test Number: 3-61

Proprietary/Non-proprietary: Non-proprietary

Pass/Fail: Pass

Evaluation: Full-Scale Crash Testing

Sponsor: Texas Department of Transportation