621.08 554 B. Lane Lines. White one -way or white/red two -way reflectors as specified, with white facing traffic.
C.Edge Lines. One-way reflectors facing traffic matching the edge line co lor or two-way reflectors with the edge line color facing traffic and red in the opposite direction.
D.Center Lines. Yellow two -way reflectors.
621.08 Raised Pavement Markers Removed . As designated, remove existing
raised pavement markers. Fill all depres sions caused by removing the castings with asphalt concrete by the end of the next workday. Remove all standing water from the hole before filling. Compact the asphalt concrete flush with the pavement. Removed raised pavement markers become the property of the Contractor.
621.09 Method of Measurement. The Department will measure RPMs by the
number of each furnished, complete with reflectors, in place, and accepted. The Department will measure RPM, Reflectors by the number of each, complete in place, for use on existing RPM castings in the pavement, and accepted. The Department will measure Raised Pavement Markers Removed by the number. Payment will include the cost of asphalt concrete to fill depressions caused by removal of the castings.
621.10 Basis of Pay ment. The Department will pay for accepted quantities at
the contract prices as follows: Item Unit Description 621 Each RPM 621 Each RPM Reflector 621 Each Raised Pavement Marker Removed ITEM 622 CONCRETE BARRIER
622.01 Description
622.02 Materials
622.03 Placing Concrete
622.04 Portable Barrier
622.05 Joints
622.06 Finish
622.07 Curing
622.08 Method of Measurement
622.09 Basis of Payment
622.01 Description. This work consists of furnishing and placing portland
cement concrete barrier on the accepte d and prepared subgrade, subbase course, or existing pavement. This item also consists of furnishing, placing, maintaining, and removing portable barrier. 622.02 555 622.02 Materials. Furnish materials conforming to: Concrete, Class QC 1 * ................................ ........................... 499 Reinforcing steel and wire fabric ....................... 509.02 Forms ................................ ................................ ..... 515.14 Preformed filler ................................ ...................... 705.03 Curing materials ................................ ........ 705.05, 705.06, ................................ .......................... or 705.07 Type 2 Precast concrete ................................ ..................... 706.13 Dowel bars ................................ ........... 709.01 thru 709.05 Steel ................................ ................................ ........ 711.01 * Replacing Coarse aggregate in the concrete mixes with Recycled Concrete Aggr egate conforming to Supplement 1117 is an option
622.03 Placing Concrete. Construct concrete barrier by cast -in-place, precast,
or slip -form methods. For slip -form construction, conform to 609.04.C.
622.04 Portable Barrier. Furnish individual sections not less than 10 feet (3 m)
long. If intending to use the barrier at one location on the project, the Contractor may slip -form barriers in place without joints, or with grooved or sawed joints to facilitate removal. As directed by the Engineer, repair or repl ace barrier sections damaged during handling or by traffic, for the life of the project. The Contractor may substitute approved proprietary portable barrier products which can be found on the Office of Roadway Engineering’s website.
622.05 Joints. Construc t joints for cast -in-place or slip -formed barrier of the
type and dimensions and at the locations specified.
A.Contraction Joints. The Contractor may construct unsealed contraction joints by either sawing, using metal inserts inside the forms, using a gro oving tool, or using full-width 3/4 inch (19 mm) thick preformed joint filler conforming to 705.03. Make joints that are sawed, tooled, or formed by inserts a minimum of 1/8 inch (3 mm) wide and 3 inches (75 mm) deep. Saw joints as soon as curing allows s awing to the required depth with minimal spalling of the concrete surface.
B.Expansion Joints. Use 3/4 inch (19 mm) preformed joint filler conforming to
705.03 to construct expansion joints at locations as shown in the plans.
C.Horizontal Construction J oints. If and as shown on the plans, the Contractor may place horizontal construction joints.
622.06 Finish. Immediately following removal of fixed forms or slip -form
construction, check the surface of the barrier with a straightedge and correct all irregularities of more than 1/4 inch in 10 feet (6 mm in 3 m). Finish and make corrections to the barrier surface according to 511.18.
622.07 Curing. Cure concrete according to 511.14, Method B and the following
additional requirements. Apply the curing co mpound using an approved mechanical sprayer equipped with a shield to protect the spray from wind. For small areas, the Engineer will allow the use of other acceptable methods. Do not apply any load or conduct any work that will damage newly placed concret e. Allow a minimum of 36 hours of cure time to elapse on any concrete 622.08 556 placed first at a horizontal construction joint. The Contractor may cure precast sections according to 515.15. With the Engineer’s approval, the Contractor may also use radiant heated fo rms for curing. The Contractor may use 511.14, Method A for curing of short sections of barrier (leave -outs); however, before the curing is completed for any leave -outs, apply material conforming to 705.07, Type 2 at the normal rate specified in 511.14, Method B. The Contractor may cure horizontal construction joints between the foundation and the upper portion of the barrier, and between portions of the upper barrier placed separately according to 511.14, Method A or B. Do not remove the membrane before placing the next portion of the concrete barrier.
622.08 Method of Measurement. The Department will measure Concrete
Barrier by the number of feet (meters) along the centerline of the top of the barrier, including all transitions, and bridge pier sections as specified, complete in place excluding end anchorages and excluding sections. The Department will measure Reinforced End Anchorages of the type specified by the number each complete in place. The Department will measure End Sections of the type specified by the number each complete in place. The Department will measure Portable Barrier and Portable Barrier, Bridge Mounted by the number of feet (meters) for each application of the barrier placed according to the plans. The Department will measure each re -use of barrier sections at a different location required by the plans separately. The Department will not measure repaired or replacement barrier sections damaged during handling or by traffic.
622.09 Basis of Payment. The cost of all inserts, sleeves, fitt ings, connectors,
reinforcement, dowels, preformed filler, excavation, aggregate base, and backfill is incidental to these items. The Department will pay for accepted quantities at the contract prices as follows: Item Unit Description 622 Foot (Meter) Conc rete Barrier, Type ___ 622 Each Concrete Barrier End Anchorage, Reinforced, Type ___ 622 Each Concrete Barrier End Section, Type ____ 622 Foot (Meter) Portable Barrier, ___" (___ mm) 622 Foot (Meter) Portable Barrier, ___" (___ mm) Bridge Mounted
Source: Ohio Construction and Material Specifications, 2019 Edition. Pages 0–0 of 928.