9−45but is included under SECTION 937; MAINTENANCE AND MOVEMENT OF TRAFFIC PROTECTIVE DEVICES , of these Specifications.
923.01 DESCRIPTION. 923.01.1 General. This work consists of providing portable barricades of various types and
configurations at the locations indicated on the Plans or as directed by the Engineer, all in accordance with these Specifications and MUTCD standards. 923.01.2 Types of Portable Channelizing Devices and Barricades. The following types of portable barricades are currently in use by the Department:
a.PVC Plastic Pipe Barricade (MUTCD, Type III).
b.Plastic Pipe Barricade with Sandbag Base (MUTCD, Type III).
c.Polyethylene Drum Barricade.
d.Fluorescent Traffic Cones.
923.02 MATERIALS. 923.02.1 PVC Plastic Pipe. Plastic pipe shall be white polyvinyl chloride pressure rated, Class
SDR 21 or SDR 26, conforming to the applicable requirements of either ASTM D2241 or ASTM D2729. 923.02.2 Polyethylene Plastic Pipe. Pipe shall be white, rotationally moulded polyethylene plastic conforming to the applicable requirements of ASTM D1248, Class II A3-E4 or Class II A4. 923.02.3 Polyethylene Drum. The drum shall be manufactured from polyethylene plastic in accordance with details indicated on the Plans and in conformance with MUTCD standards. 923.02.4 Fluorescent Traffic Cones. Cones shall be a plastic, fluorescent, commercially produced product that conforms to the details indicated on the Plans. The conical upper portion shall be 100 percent polyvinyl chloride having a highly pigmented, non-injurious fluorescent red-orange color. The upper section shall be fused to a non-painted white base in accordance with the manufacturer's recommendations. 923.03 CONSTRUCTION METHODS. 923.03.1 Design and Fabrication. Portable barricades and devices provided under this Specification shall conform in type, size, dimension, color and design with their respective details as 9−46 indicated on the Plans. Barricades shall be sturdily constructed, freshly painted, and shall present a clean and neat appearance. Messages shall be clearly legible. Barricades shall be painted and reflectorized in accordance with requirements set forth in other paragraphs of this Specification. 924.03.2 Placement. The Contractor shall provide the number and types of portable barricades and devices as indicated on the Plans or as dire cted by the Engineer. Barricades and devices shall be erected prior to the time actual constructi on work commences. Conversely, no construction work shall take place until the required barricades have been erected. Barricades shall remain in place until the Engineer determines that they are no longer needed at a given location. They shall be reused as directed by the Engineer at other locations as the sequence of construction progresses. Care shall be exercised during transporting, storing, and placement of barricades and devices to prevent damage. No damaged barricades or devices shall be placed. Barricades and other traffic protection devices showing defects or damage as a result of the Contractor's operations or negligence shall be removed and replaced at no additional cost to the State. 923.04 METHOD OF MEASUREMENT. 923.04.1 Plastic Pipe Barricades. "Plastic Pipe Barricades" and "Plastic Pipe Barricades with Sandbag Bases" will be measured by the respective num ber of each such units actually provided in accordance with the Plans and/or as directed by the Engineer. 923.04.2 Drum Barricades . "Polyethylene Drum Barricades" will be measured by the number of barrel-days such barricades are actually in place in accordance with the Plans and/or as directed by the Engineer. 923.04.3 Fluorescent Traffic Cones. "Fluorescent Traffic Cones" will be measured by the number of each such cone actually provided in acco rdance with the Plans and/or as directed by the Engineer. 923.05 BASIS OF PAYMENT.
923.05.1 Plastic Pipe Barricades. The accepted quantities of "Plastic Pipe Barricades" and
"Plastic Pipe Barricades wi th Sandbag Bases" will be paid for at their respective contract unit prices per each unit as listed in the Proposal. The prices so-stated constitute full and complete compensation for all labor, material, and equipment, including placing barricades and devices at their initial locations and for eventually removing said barricades and devices from their final locations, and all incidentals necessary to finish the work, complete and a ccepted by the Engineer.
923.05.2 Drum Barricades. The accepted quantity of "Polyethylene Drum Barricades" will be
paid for at the contract unit price per barrel-day as listed in the Proposal. The price so-stated constitutes full and complete compensation for all labor, material, and equipment including fabrication, reflective sheeting, placing drum barricades at their initial locations and for eventually removing said drum barricades from their final locations, maintenance, replacement (in the event of unacceptable damage), temporary storage, and all incidentals necessary to finish the work, complete and accepted by the Engineer. 9−47923.05.3 Fluorescent Traffic Cones. The accepted quantity of "Fl uorescent Traffic Cones" will be paid for at the contract unit price per each such cone as listed in the Proposal. The price so-stated constitutes full and complete compensation for a ll labor, material, and equipment, including placing cones at their initial locations and for eventually removing said cones from their final locations, and all incidentals necessary to finish the work, complete and accepted by the Engineer. Payment for removing barricades and traffic cones from their initial locations and for hauling, maintaining, transporting, and relocating said barricades and traffic cones to storage or to subsequent intermediate locations at which they are to be used for traffic control is not included in this Section but is included under SECTION 937; MAINTENANCE AND MOVEMENT OF TRAFFIC PROTECTIVE DEVICES , of these Specifications. SECTION 924 ADVANCE WARNING ARROW PANEL
924.01 DESCRIPTION . This work consists of providing, operating and maintaining a portable
trailer on which is mounted a flashing "arrow" unit at locations indicated on the Plans or as directed by the Engineer, all in accordance with these Specifications and MUTCD standards. 924.02 MATERIALS. 924.02.1 Trailer . The trailer shall be a portable, rubber-tired unit.
924.02.2 Flashing Arrow Unit . The flashing "arrow" unit consists of a black background panel
constructed of light weight aluminum. The panel shall be approximately 4 feet high and 8 feet wide. It shall be wired and have receptacles for at least 12 No. 4412A amber sealed beam lamps, or approved equal. Each such lamp shall have a ma ximum initial intensity of 6,000 candle power and a flash rate of approximately 30 flashes per minute. The unit shall be provided with a locking switch box and an automatic dimming device capable of reduc ing maximum lamp intensity by at least 50 percent during nighttime operation. The flashing arrow unit shall be capable of indicating a bar (warning mode), an arrow to the left, an arrow to the right, or an arrow in both directions simultaneously to approaching traffic. 924.02.3 Power Supply. The portable flashing arrow unit shall be powered by diesel fuel. The generator shall be equipped with battery powered backup. The portable flashing unit shall also be provided with a hardwire capability. 924.03 CONSTRUCTION METHODS. The advance warning arrow panel shall be available for use throughout the duration of the Contract. It shall be positioned and repositioned at the direction of the Engineer. The Contractor shall be required to perform all maintenance recommended by the manufacturer of the units, as required to keep the unit operating properly. Said maintenance shall include the periodic cleaning of the units.
Source: Rhode Island Standard Specifications (Bluebook), 2024 Edition. Pages 577–579 of 826.
← Previous
918 Rural Mail Boxes Postmaster Approved …………………….…….….. 9-38 Section 919 Test Pits ..………………………………………………………..………. 9-39 Section 920 Riprap …………………………………………………………..………… 9-40 Section 921 Slope Paving ……………………………………………………..……… 9-42 Section 922 Temporary Construction Signs …………………………………..……. 9-43
Next →
927 [Section Not Used] …………………………………………………..….. 9-53