Earth-embankment guard rails marked to insure visibility; 6 ft. wide at base and 3 ft. high with 1 on 1 slope on either side; integral with cross-section of new graded earth roads costing about 20 cents per lin. ft.
Earth-embankment guard rails on West Virginia roads
Eng. News-Rec
Engineering News Record ; 101 , n 13
1928
2 Figs.
Article (Journal)
English
© Metadata Copyright Elsevier B. V. All rights reserved.
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