Safety Grates for Cross-Drainage Culverts Sicking, Dean L ; Bielenberg, Robert W ; Rohde, John R ; Reid, John D ; Faller, Ronald K ; Polivka, Karla A
Series: ; 2060Publication details: Transportation Research Record: Journal of the Transportation Research Board, 2008Description: s. 67-73ISBN:- 9780309113304
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| Statens väg- och transportforskningsinstitut | Available |
This paper presents findings of an investigation of the safety performance of culvert safety grates when installed on slopes as steep as 3:1, as recommended by the AASHTO "Roadside Design Guide" (RDG). LS-DYNA modeling was used to identify critical impact conditions for roadside culvert grates installed on 3:1 slopes. Two full-scale vehicle crash tests were conducted under the guidelines of NCHRP Report 350 on a 6.4-ƒâ€” 6.4-m (21- x 21-ft) culvert safety grate installed on a 3:1 slope. The full-scale crash tests demonstrated that the AASHTO RDG recommended safety grates provide acceptable safety performance when installed on 3:1 slopes.