January 1996
5.4.1.11 Stone Masonry Wall
A barrier consisting of a concrete core (pre-cast or cast in place) that is faced and capped with stone
and mortar to give it the appearance of a vertical -faced stone masonry wall has been developed as an aesthetic
barrier for use by the National Park Service for roads under its jurisdiction.
Impact perfomance: A smooth-faced design was successfully crash tested with and 820-kg car impacting at
97 km/h and approximately 15 degrees and 1950-kg car at 97 km/h and a 25 degree angle. A 690-mm high barrier
consisting of rough stone masonry covering a 510-mm high reinforced concrete core has also been successfully
tested at 97 km/h with 820-kg and 2000-kg cars. The 50-mm deep raked mortar joints add to the rustic appearance
of this barrier.