104.17 Temporary Movable Type Concrete Traffic Barrier (Mctb)
CATEGORY 100 PRELIMINARY SECTION 104.17 — TEMPORARY MOVABLE TYPE CONCRETE TRAFFIC BARRIER (MCTB)
104.17.01 Description
Furnish, place, assemble, maintain, move, and remove and dispose of movable interlocking type concrete traffic barrier. Movable barrier systems shall consist of individual units that remain connected for the total length when being moved in one continuous operation.
104.17.02 Material
Precast Movable Concrete Barrier and Transfer Device QPL Reflective Barrier Markers QPL MCTB shall conform to NCHRP Report 350 and/or MASH 2016 criteria for Test Level 3.
104.17.03 Construction
Perform all transfer shifts using the transfer device. The transfer device shall be capable of moving and transferring the barrier as required, and of operating on the curve and grades specified. Ensure that the device does not extend into traffic. The Engineer will inspect the movable barrier upon delivery and throughout the life of the project. Replace any damaged or defective units as directed. Install reflective barrier markers as specified. Maintain the barrier and reflective barrier markers in a like new condition. Perform all maintenance operations for the transfer device. Have sufficient spare parts and personnel available to ensure that the required lane configurations are in place at the required times. Failure to move the MCTB at the proper time will be cause for penalty under TC-4.02.
104.17.04 Measurement and Payment
The payment will be full compensation for all material, labor, equipment, tools, and incidentals necessary to complete the work.
a.The initial installation of the Temporary Movable Type Concrete Traffic Barrier will be measured and paid for at the Contract unit price per linear foot measured in place from end to end. 2025 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS
104.17 Temporary Movable Type Concrete Traffic Barrier (Mctb)
b.Transfer shifts of the barrier will be measured and paid for at the Contract unit price per linear foot for the Transfer Shift of Movable Type Concrete Barrier item. The measurement will be end to end of the barrier actually shifted. The Contract unit price will apply to each shift.
c.Replacing sections of the barrier that have been damaged by vehicular traffic while in place will be measured and paid for at the Contract unit price per each for the Replacement Sections for Movable Type Concrete Barrier item. Replacement of sections damaged by the Contractor’s operations shall be at no additional cost to the Administration.
d.Resetting the barrier will be measured and paid for at the Contract unit price per linear foot for the Reset Movable Type Concrete Barrier item. The payment will also include removal from its original placement and transporting and resetting it in its new temporary location.
e.Reflective barrier markers will be measured and paid for as specified in 104.04.04(b).
f.End treatments will be measured and paid for under the pertinent item specified in the Contract Documents. 2025 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS
104.18 Traffic Manager (Tm)
2025 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS CATEGORY 100 PRELIMINARY SECTION 104.18 — TRAFFIC MANAGER (TM)
104.18.01 Description
Provide a Traffic Manager (TM).
104.18.02 Materials
Not applicable.
104.18.03 Construction
Submit the TM’s name for approval at least 10 days prior to commencing any work on the project. Provide proof that the TM has completed an Administration approved Temporary Traffic Control training course within the last four years. A change in the appointment of any TM throughout the duration of the Contract will require a written submittal for approval. Any failure of the TM to perform the required duties will be grounds for replacement. The TM shall be available at all times and be on site within 1/2 hour during periods of active work in the work zone. The TM shall do the following:
a.Implement the Traffic Control Plan (TCP), maintain an up-to-date TCP, and provide a copy to the Engineer following any changes.
b.Closely coordinate the operations with the Engineer and supervise the maintenance of traffic on the project, including those involving subcontractors.
c.Make on-site inspections of the area affected by the work on a regular basis including Saturdays, Sundays, and holidays, and be available for consultation at all times. When the TCP is in place, make daily inspections during hours of operations and at least one night inspection per week. Perform additional inspections as directed.
d.During holiday periods, in addition to the monitoring of the maintenance of traffic, conduct a surveillance of any area affected by the Contract work.
e.Maintain a daily log of the inspections and include the date, time, hours worked, condition of maintenance of traffic, and any corrective action taken. Furnish a copy of the daily log to the Engineer by the following day.
Source: Maryland Standard Specifications for Construction and Materials, 2025 Edition. Pages 187–188 of 1,113.