Citation

Stoughton RL, Abghari A, Dusel JP, Hedgecock JL, Glauz DL. Transp. Res. Rec. 1989; 1233: 51-64.

Copyright

(Copyright © 1989, Transportation Research Board, National Research Council, National Academy of Sciences USA, Publisher SAGE Publishing)

DOI

unavailable

PMID

unavailable

Abstract

This paper presents the results of seven full-scale vehicular crash tests on 35-ft-high breakaway lighting standards with 20-ft-long mast arms and compares them with the recommended crash test criteria in NCHRP Report 230 and with the new 1985 AASHTO specifications for structural supports. The test devices consisted of an aluminum lighting standard with cast aluminum breakaway couplings, a lightweight steel lighting standard with cast aluminum breakaway couplings and a triangular slip base, and a typical California Department of Transportation (Caltrans) type 31 lighting standard with a triangular slip base. The lighting standards tested met the requirements of NCHRP Report 230 with minor exceptions. The 1985 AASHTO specifications for breakaway bases, however, were met in all seven crash tests. Although the die-cast aluminum coupling proved to be an effective breakaway device when impacted by 1,800-lb cars, excessive porosity and lack of compliance with Caltrans specifications preclude the use of these couplings as a standard Caltrans breakaway device. The Caltrans triangular steel slip base proved to be an effective breakaway device when impacted by 1,800-lb cars.

Record URL:
http://onlinepubs.trb.org/Onlinepubs/trr/1989/1233/1233-006.pdf

Language: en

Keywords

Automobiles; Poles--Testing; Street Lighting; Metals Testing--Impact