The objective of the present study was to evaluate the effectiveness of various delineation systems for use on construction sites. It was determined that vertical panels and reflective cylinders were … [Read more...] about Delineation of Temporary Barriers in Work Zones, Volume II
Delineators
Top-mounted object markers for delineation of portable concrete barrier wall on highway projects or alternative devices
Standard 701321-02 shows Illinois' basic object marker barrier wall attachment. Most designers are now opting for the Detail A option using barrier wall reflectors. This marker attachment design has … [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
Michigan DOT's current practice is to delineate the temporary concrete barrier (TCB) with barrier markers placed at 6m max spacing at a height of 460 + 25mm from the bottom of the barrier marker to … [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
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
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
Illinois Department of Transportation Highway Standards & District Specific Standards
These drawings show the details of various construction items and are used in conjunction with the Standard Specifications. The applicable Standards are referenced on the cover sheet of the plans. … [Read more...] about Illinois Department of Transportation Highway Standards & District Specific Standards