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”. 532 Vehicles, materials or any other equipment shall not be stored in the Temporary Barrier buffer area. Unless required as a part of the contract, vehicles and equipment shall not work in the Temporary Barrier buffer area and if required, shall be limited to that time that it is necessary to be in that area.
636.15 Removing and Resetting Temporary Barriers :
Temporary barriers that are to be relocated w ithin a project shall be salvaged and reinstalled as specified in subection 636.14 and set as indicated on the Plans.
636.16 Temporary Guardrail :
636.16.1 Temporary Guardrail Barrier: Temporary guardrail barrier shall consist of
guardrail (beam) mounted on six ( 6) feet three ( 3) inches post spacing with blockouts, conforming to the requirements of Section 607. Where temporary guardrail barrier adjoins concrete barrier, bridge parapet, or other essentially non -yielding obstacle, regardless if one is temporary and the other is permanent (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.
636.16.2 Temporary Guardrail Connector: This connector shall consist of the last 25
feet of guardrail (beam) prior to the physical connection to a non -yield ing barrier or obstacle, mounted on three ( 3) feet 1½ inches post spacing with blockouts, conforming to Standard Sheet
G.R. 5 and an End Shoe conforming to Standard Sheet G.R. 2A. Four bolts shall be used in the End Shoe and standard posts may be substitu ted for the oversized wood posts.
636.17 Removing and Resetting Temporary Guardrail Barrier :
Temporary guardrail barrier that is to be relocated within the project shal l be salvaged and reinstalled as specified in 636.16.
636.18 Electric Arrow :
The electric arrow panel shall be located as shown in the manual, "Manual on Temporary Traffic Control for Streets and Highways," or as shown on the Plans. For construction areas, the electric arrow shall be portable, trailer mounted on a nonreflective flat black panel forty - eight (48) inches high by ninety -six (96) inches wide with a minimum legibility distance of one mile. Minimum mounting height, measured from the roadway to the bottom of the panel, shall be seven ( 7) feet except on vehicle mounted panels which shall be as high as practicable. The electric arrow shall have the capability of the following mode selectio n: Left Arrow, Right Arrow, Left and Right Arrow and Caution, with Caution mode consisting of four or more lamps arranged in a pattern which will not indicate a direction. Arrow panels shall automatically dim 50 percent (50%) from their rated lamp voltag e during hours of darkness. The flashing rate of the lamps shall be between 25 and 40 flashes per minute. Minimum lamp "on time" shall be 50 percent (50%) .
636.19 Portable Message Signs :
636.19 1-General: Portable Message signs shall consist of the furnishing, installing and
maintaining of a variable message sign on a portable trailer. Each unit shall be self -contained and consist of a display board, controller, power supply, electrical cable and adjustable height structural support system. It shall be equipped to accept power supply from a completely self - contained diesel generator, existing commercial electrical service, or battery pack which is recharged automatically by solar panels. The tr ailer system assemblage shall conform to the
Source: West Virginia Standard Specifications for Road and Bridge Construction, 2023 Edition. Pages 551–552 of 1,006.