New York state standard specifications require delineation on temporary barrier as follows: "The contractor shall provide and maintain delineation on the temporary barriers. This delineation shall … [Read more...] about Top-mounted object markers for delineation of portable concrete barrier wall on highway projects or alternative devices
Temporary Concrete Barriers
Top-mounted object markers for delineation of portable concrete barrier wall on highway projects or alternative devices
West Virginia uses "B-1" delineators every 20' mounted along the face (about 3/4 up). They can mount on top as an alternate, and various sizes are permitted. All delineators are attached by PVC … [Read more...] about Top-mounted object markers for delineation of portable concrete barrier wall on highway projects or alternative devices
Top-mounted object markers for delineation of portable concrete barrier wall on highway projects or alternative devices
Wisconsin has typically not used top-mounted object markers on portable concrete barrier. The normal practice is to use only side-mounted delineator reflectors at 20-foot spacing. On curved alignment … [Read more...] about Top-mounted object markers for delineation of portable concrete barrier wall on highway projects or alternative devices
Top-mounted object markers for delineation of portable concrete barrier wall on highway projects or alternative devices
Alabama requires a small, flexible plastic substrate marker mounted on the top of concrete barrier in construction work zones. These plastic markers are covered with silver Type III reflective … [Read more...] about Top-mounted object markers for delineation of portable concrete barrier wall on highway projects or alternative devices
Top-mounted object markers for delineation of portable concrete barrier wall on highway projects or alternative devices
Washington state has no requirement to put reflectors on permanent barrier. The state does, however, require them on any temp barrier 6" down on the face. A variety of manufactureres are approved. … [Read more...] about Top-mounted object markers for delineation of portable concrete barrier wall on highway projects or alternative devices
Development of a Plan for Compliance with NCHRP 350 for Temporary Concrete Barriers
The Federal Highway Administration (FHWA) has mandated that TCBs used on federally funded projects on the National Highway System (NHS) advertised after October 1, 2002 shall meet the requirements of … [Read more...] about Development of a Plan for Compliance with NCHRP 350 for Temporary Concrete Barriers