531 Channelizer Cones are to be reviewed at least once every twelve (12) hours during non -work periods by the Contractor responsible for traffic control on the project.
636.14 Temporary Barrier :
Furnish, install, maintain, remove and dispose of temporary barrier in accordance with this specification and the contract plans.
636.14.1 Materials: Temporary Barrier manufactured before December 31,2019 shall
meet the requirements of NCHRP Report 3 50 and/or MASH -09 for the different test levels as shown in Table 3.1 “Test Matrix for Longitudinal Barriers” in NCHRP Report 350. Temporary Barrier manufactured after December 31, 2019, must have been successfully tested to the 2016 edition of MASH. Spe cific types of temporary barrier will not be used unless crash tested and approved by the Engineer. Historical performance will help determine use of a product. Poor performance may be grounds for non -acceptance. Temporary Barriers shall have adequat e drainage slots to allow runoff to pass through. Temporary Barrier shall have 8” x 12” Type B -1 Delineators (white or yellow as appropriate) facing traffic at forty ( 40) foot centers.
636.14.2 Installation: This barrier type shall conform to the details on the Plans, set as
directed on the Plans, with the barrier sections securely connected together by satisfactory fastening devices to provide a more stable structure against impact. A Temporary Barrier In stallation Plan shall be approved according to Section 105.2.1.2 “Contractor Approval Method”. It shall have information adequate to ensure it meets the installation conditions below and shall include barrier type, barrier connection type, NCHRP/MASH test approval and data, individual segment length, anchorage details, end treatments, and transition details. The temporary barrier shall be placed to match test conditions as determined by the Engineer. These conditions may include, but not be limited to, anchorages, total length of barrier, individual segment length and connection details. Only one type of temporary barrier shall be used for any one continuous run of barrier in a project. To clarify, the entire length of temporary barrier shall not be int ermixed in regard to type of barrier, connection type, or individual barrier length unless that configuration has been tested. Anchorage spacing and installation, if required, shall be per manufacturer subject to shop drawing review and approval and meet or exceed test conditions. Shop drawing information shall include details for anchor removal and patching and/or repair of pavement or bridge deck. Where temporary barrier adjoins guardrail barrier, regardless of if one is temporary and the other is pe rmanent (newly constructed or previously in existence) or if both are temporary, they must be connected with a Temporary Guardrail Connector conforming to subsection
636.16 2.
Where temporary barrier adjoins bridge parapet or other essentially non -yieldi ng barrier or obstacle, they must be joined in a manner to maintain barrier continuity and prevent vehicle snagging during impact. If they cannot be joined in this manner, a connection device must be used to assure barrier continuity and to prevent vehicl e snagging during impact. When the temporary barriers are no longer needed, they will become the property of the Contractor, unless otherwise noted on the Plans. J-J Hook connections shall be tensioned by pulling the barrier segments apart to make this type connection “tight”.