Development of a MASH TL-4 Portable Concrete Barrier with Large Scupper

Report Number(s): 0-7087-R1

Description: The test installation for MASH Test 4-10 and Test 4-11 consisted of seven singleslope portable concrete barriers with large scupper connected using X-bolt connections. Each 30-ft barrier segment was 42 inches tall, 24 inches wide at the bottom, and 8 inches wide at the top. The large scupper was 18 ft long and 12 inches high, and it was centered on the barrier segment. The ends of the scupper were tapered to a width of 9 inches to reduce snagging interaction with the impacting vehicle. The X-bolt connection was comprised of two ⅞-inch-diameter B7 threaded steel rods. The overall length of the installation was 210 ft for MASH Test 4-10 and Test 4-11. For Test 4-12, the installation had eight segments, with a total length of 240 ft, to provide additional length for evaluating stability of the single-unit truck.

Test Level: 4

Barrier Type: Single Slope

MASH Test Number: 4-10, 4-11, 4-12

Proprietary/Non-proprietary: Non-proprietary

Pass/Fail: Pass

Evaluation: Testing + Engineering Analysis

Sponsor: TxDOT & FHWA