MASH Test 4-12 of Shallow Anchorage Single Slope Traffic without Dowel Bars

Report Number(s): 0-6968-R10

Description: The installation consisted of three sections of 36-inch-tall concrete SSTR. Two of the sections were 25 ft. in length, and the third section, placed on the left end when viewing from the traffic side, was 74 ft. 9¾ inches long. There was a 2-inch joint between each barrier section, which resulted in a total length of 125 ft. 1¾ inches. The SSTR was anchored in place using No. 4 rebar anchors embedded in a cast-in-place concrete slab measuring 4½ inches thick. The rebar anchors rested on the top surface of precast concrete panels that were 8 ft. 4 inches long, 10 ft. wide, and 4 inches thick. The upper concrete slab was then cast in place over the precast concrete panels to simulate field construction. For Test No. 469680-02-2, the dowel bars between barrier segments across the expansion joints were cut through so the barrier segments were not connected.

Test Level: 4

Barrier Type: Single Slope

MASH Test Number: 4-12

Proprietary/Non-proprietary: Non-proprietary

Pass/Fail: Fail

Evaluation: Full-Scale Crash Testing

Sponsor: TxDOT & FHWA