606 PERMANENT TRAFFIC BARRIER END TREATMENTS

From SHA MediaWiki
Jump to navigation Jump to search
This is not a legal document. Please see disclaimer for more information.
606.01 DESCRIPTION
Furnish and install permanent traffic barrier end treatments.
606.02 MATERIALS
Refer to 605.02, 701.02, 705.02, 708.02, 709.02 and the following:
End Treatments       As specified by the manufacturer
Spare Parts Packages       As specified by the manufacturer
Antifreeze Agent       As approved
Reflectorization       950.03
Plastic Barrels (Yellow)       Standard MD 104.01-70
Sand       901.01
Portland Cement Concrete       902.10, Mix 2 and 6
Concrete       902.10, Mix 7
606.03 CONSTRUCTION
606.03.01 End Treatments
(a) Buried-in-Backslope End Treatment (Type A). Excavate the slope to install these components. Bury the ends of the traffic barrier, the end treatment anchorage, and the bottom rail, when required, in a cut slope. Upon installation, backfill and stabilize the area as specified in 606.03.02 to match the adjacent slope.
For single rail systems, use 6 ft posts throughout the entire end treatment. For double rail systems, use 8 ft posts, except for the last three posts buried in the cut slope.
Construct the end treatment anchorage according to the Book of Standards.
Install traffic barrier W-beam as specified in 605.03.
(b) One-Sided Flared End Treatment (Type B). Install according to the manufacturer’s recommendations and the Book of Standards.
(c) One-Sided Parallel End Treatment (Type C). Install in a straight line according to the manufacturer’s recommendations and the Book of Standards.
(d) Two-Sided End Treatment and Crash Cushion (Types D, E, F, and J ). Install these systems as specified by the manufacturer. Refer to the manufacturer’s recommendations for installation methods and procedures.
(e) One-Sided Downstream End Treatment (Type K). Install according to the Book of Standards.
(f) Radius End Treatment (Type L). Install according to the Book of Standards.
(g) All Other Traffic Barrier End Treatments. Install these systems as specified by the manufacturer. Refer to the manufacturer’s recommendations for installation methods and procedures.
(h) Nose Section. Reflectorize as shown in the Contract Documents and as approved by the Office of Traffic and Safety.
(i) Permanent Crash Cushion Sand Filled Plastic Barrels (SFPB). Provide the components and assemble, place in the required configuration, and fill each barrel according to the manufacturer's recommendations or as specified in the Contract Documents. Ensure that each SFPB is watertight and separated from other SFPB by a distance of 3 in. Place the last row of SFPB 12 in. from the shielded object.
Reflectorize the first barrel of the SFPB configuration as specified. Mix approved antifreeze agent into loose, dry sand according to the manufacturer’s recommendations and install sand mixture in barrels.
606.03.02 Grading Adjustment. When grading adjustment is required for installation of traffic barrier end treatments and crash cushions, adjust the grading using topsoil, crusher run aggregate CR-6, asphalt millings or grindings, subsoil, common borrow, or other approved material, as specified in 605.03.04(a), (b), and (c).
606.04 MEASUREMENT AND PAYMENT
The payment will be full compensation for all excavation, removal, and disposal of the existing end treatment to be replaced, fabrication of all component parts, transitions to barriers, reflectorization, backfill, compaction, and for all material, labor, equipment, tools, disposal fees, and incidentals necessary to complete the work, unless pay items are included in the Contract Documents.
606.04.01 Buried-in-Backslope End Treatment (Type A) will be measured and paid for at the Contract unit price per each.
606.04.02 One-Sided Flared End Treatment (Type B), One-Sided Parallel End Treatment (Type C), One-Sided Downstream End Treatment (Type K), Radius End Treatment (Type L), and Two-Sided End Treatment and Crash Cushion (Type D, E, F and J) will be measured and paid for at Contract unit price per each.
606.04.03 Grading adjustment using topsoil and subsoil will be measured and paid for at the Contract unit price as specified in 701.04.
606.04.04 Turfgrass Sod Establishment or Turfgrass Establishment will be measured and paid for at the Contract unit price per square yard.
606.04.05 Type A Soil Stabilization Matting or Type E Soil Stabilization Matting will be measured and paid for at the Contract unit price per square yard.
606.04.06 Grading adjustment using CR-6 crusher run aggregate, or asphalt millings or grindings, will be measured and paid for at the Contract unit price per square yard, per ton, or as specified for the pertinent items. The payment will also include full compensation for furnishing, adjusting, and compacting embankment or aggregate material.
606.04.07 Permanent Crash Cushion Sand Filled Barrels will be measured and paid for at the Contract unit price per barrel. The payment will also include full compensation for furnishing and placing sand and antifreeze agent.
606.04.08 Repairs
(a) Traffic Barrier End Treatment Spare Parts Package furnished and installed will be measured and paid for at the Contract unit price per each for the type specified. The payment will also include full compensation for the clearing and removal of debris and damaged unsalvageable parts, and for restoring damaged topsoil, turfgrass, or aggregate.
(b) When spare parts packages are furnished by the Administration, Repairing Traffic Barrier End Treatments will be measured and paid for at the Contract unit price per each for the type specified. The payment will also include full compensation for all transportation, reconnection to fixed objects where necessary, clearing and removal of debris and damaged unsalvageable parts, and for restoring damaged topsoil, turfgrass, or aggregate.
(c) Payment will not be made for replacement end treatments or spare parts packages used for end treatments damaged due to the Contractor’s operations.
606.04.09 Grading adjustment using common borrow will be measured and paid for at the Contract unit price per cubic yard as specified in 203.04.
606.04.10 Grading adjustment using other approved materials will be measured and paid for as pertinent items.