495 Barrier Delineators ...................................................... 926.02(c) Cast-in-Place Barriers .................................................. 702 Cast-in-Place Concrete Glare Screens ......................... 702 Concrete Sealers .......................................................... 709 Construction Warn ing Lights ...................................... 923.03 Precast Barriers ............................................................ 707 Precast Concrete Glare Screen .................................... 707 Reinforcing Bars .......................................................... 910.01 CONSTRUCTION REQUIREMENTS
602.03 Concrete Barrier an d Concrete Glare Screen
Concrete barrier and concrete glare screen may be precast or cast-in-place. The option selected shall be used continuously throughout the project. Irregular sections shall be cast-in-place regard less of the option selected. Concrete glare screen may only be precas t when constructed in combination with new precast barrier. Concrete glare screen shall be cast-in-place when constructed in combination with cast-in-place barrier and when constructed on top of existing 30 concrete barrier. Excavation and compaction shall be in accordance with 605.03(a). Backfilling shall be in accordance with appli cable requirements of 605.03(d).
a.Precast Concrete Barri er and Concrete Glare Screen Precast concrete barrier and concrete glare screen shall be constructed in accordance with applicable requirement s of 707, except the minimum 28-day compressive strength shall be 3,000 psi. The precast units shall not be shipped or used until this strength is attained. The surfaces of individual precast units shall vary no 40 more than 1/4 in. in 10 ft from the speci fied cross-section, as measured from a longitudinal straightedge. The maximum variation in the vertical and horizontal alignment of adjacent units shall be 1/4 in. ac ross the joint, as measured from a 10 ft longitudinal straightedge. Approved bedding may be used to obtain proper alignment of the concrete barrier sections. (b) Cast-in-Place Concrete Barrier and Concrete Glare Screen Cast-in-place concrete barrier and concrete glare screen shall be constructed in accordance with applicable requirements of 706.03 or by the use of an approved slip-form machine. The surfaces of the concre te shall vary no more than 1/4 in. in 10 50 ft from the specified cross-section, as measured from a longitudinal straightedge. Where concrete pavement or concrete shou lder abuts the concrete barrier, 1/2 in. preformed joint filler shall be placed as shown on the plans. Where the concrete barrier is to be placed on PCCP, epoxy coated reinforcing bars shall be placed as shown on the plans. The epoxy coated reinforcing bars shall be installed in the PCCP by drilling and grouting. 602.03 The barrier wall shall be constructed in single pours without subsequent vertical extensions. 60 When shown on the plans, cast-in-place mo dified concrete barrier sections shall be in accordance with the abov e requirements and the concrete shall be class A in accordance with 702.02.
c.Finishing Concrete barrier and concrete glare screen shall be finished in accordance with
702.21 If slip-form construction is used, an approved brush finish will be allowed.
Curing material in accordance with 912.01(e) shall be applied as a bond breaker to all areas which result in concrete-to-concrete contact. It shall be applied at a minimum 70 rate of 1 gal./75 sq ft. If material is applied at a rate less than the minimum rate, a second application shall be applied.
d.Sealing Regardless of the method of construction, all exposed surfaces of the concrete barrier and concrete glare screen shall be sealed in accordance with the applicable requirements of 709.
e.Joints The type, size and location of joints and preformed joint filler shall be as shown 80 on the plans.
f.Reflectorization All concrete barrier shall be reflect orized with barrier delineators spaced a minimum of 40 ft apart and centered 2 ft above the surface of adjacent pavement or shoulder. The reflectorization shall be on both sides of the wall if traffic is on both sides. All delineators damaged during installa tion or placement of the concrete barrier shall be replaced with no additional payment. The color of the reflectors shall match the color of the adjacent pavement traffic markings.
602.04 Blank
602.05 Method of Measurement
Concrete barrier will be measured by the linear foot along the centerline of the barrier, including irregular barrier sections around median obstructions such as bridge piers. Barrier delineators will be measured per each provided there is a pay item shown in the Schedule of Pay Items. Concrete glare screen will be measured by the linear foot along the centerline of the glare screen. Cl ass A concrete for cast-in-place modified concrete barriers will be measured by the cubic yard for the modified barrier section. No deductions will be made for reinforcing bars or joints. Reinforcing bars for cast- 100 in-place modified concrete barriers will be measured in accordance with 703.07.
602.06 Basis of Payment
Concrete barrier will be paid for at the contract unit price per linear foot, complete 602.04 497 in place. Class A concrete for cast-in-place modified concrete barriers will be paid for at the contract unit price per cubic yard. Re inforcing bars for cast-in-place modified concrete barriers will be paid for in acco rdance with 703.08. Barrier delineators used on concrete barrier will be paid for at the contract unit price per each, complete in place. 110 Concrete glare screen will be paid for at the contract unit price per linear foot, complete in place. Payment will be made under: Pay Item Pay Unit Symbol Barrier Delineator ...................................................................... EACH Concrete Barrier Glare Screen ................................................... LFT Concrete Barrier ........................................................................ LFT 120 Concrete Barrier, Modified Section ........................................... CYS The cost of polyethylene film, surface seal, and curing material shall be included in the cost of concrete barrier.
Source: Indiana Standard Specifications, 2024 Edition. Pages 494–496 of 1,248.