SECTION 906 — CURB FOR ROADWAYS 900-21 — CURB FOR ROADWAYS
906.01 Description.
This work includes the construction of curb on prepared gravel bases and/or the construction of asphalt berm on underlying pavement courses at the required locations. This Section applies to 1) the removal and disposal of existing curb and installing a new curb, or 2) installing a new curb where none currently exists. SECTION 201 applies to only the removal and disposal of existing curbs. Types of Curb. The following types of curb are designated as follows: • Granite Curb • Precast Concrete Curb • Asphalt Berm • Straight, Transition, and/or Circular and Lot Curb Curb Details. Granite Curb includes the following: • Granite Curb-Straight • Granite Curb-Circular • Granite Curb Corners • Granite Curb Transitions • Granite Curb Apron Stones • Granite Curb Inlet Stones • Granite Curb Ramp Transition • Granite Ramp Stones Precast Concrete Curb includes the following: • Precast Concrete Curb-Straight • Precast Concrete Curb-Circular • Precast Concrete Curb Corners • Precast Concrete Curb Transitions • Precast Concrete Curb Apron Stones • Precast Concrete Curb Inlet Stones • Precast Concrete Curb Ramp Transition • Stones and Precast Concrete Ramp Stones
906.02 Materials.
Granite Curb. Use granite curb that conforms to Subsections M09.01 and M09.02.
Part 900 — Incidental Construction and Services August 2025
900-22 SECTION 906 — CURB FOR ROADWAYS Precast Concrete Curb. Use Class Z concrete for curb that conforms to SECTION 601. Asphalt Berm. Use asphalt material for berm that conform s to the RIDOT Standard Details and Subsection 401.02. Use tack coat that conforms to the requirements for emulsified asphalt in SECTION 403. Use highway joint sealant material that is listed in the Department’s Approved Materials List. Gravel Borrow. Use Gravel Borrow that conforms to Subsection M01.02. Curb Lock. Use Class A for the Portland cement concrete.
906.03 Construction Methods.
Granite Curb.
a.Excavation. Ensure that all excavation complies with PART 200.
b.Gravel Borrow Subbase. Ensure that the placement and compaction of the subbase complies with the applicable sections of PART 300.
c.I nstallation. Set the curb so that the front top arris line conforms to the required line and grade.
d.J oints . Place curb units end-to-end as close as possible. Do not allow more than ½-in. opening to be visible for the full width of the top and the top 8 in. of the vertical joint.
e.B ackfilling . After the curb has been set, backfill any remaining excavated areas with approved material and thoroughly compact back and front to grade. Ensure that the methods of compaction preserve the line and grade of the curb . If curb lock concrete is used, provide a washout facility. Precast Concrete Curb. Ensure that the construction of precast concrete curb conforms to Subsection 906.03.1. Asphalt Berm. Place the asphalt berm on the underlying pavement course as follows:
Part 900 — Incidental Construction and Services August 2025
SECTION 906 — CURB FOR ROADWAYS 900-23 Place the berm at the same time as the asphalt surface course in one operation. Broom clean and tack t he underlying pavement before placement. Place the asphalt berm in one lift , and compact by a smooth steel wheel roller of a type and weight acceptable to the Engineer. Remove, Handle, Haul, Trim, and Reset Curb and Edging, Straight and/or Circular, All Types. Remove the existing curb or edging to minimize damage to the units and adjacent pavement or sidewalks. Haul and stockpile the curb or edging as required. Trim and cut t he individual units as necessary so that the ends are squared, the joints of the installed curb or edging are tightly butted, and no more than a ½-in. opening is visible at the full width of the top and the top 8 in. of the vertical joint. Clean all curb or edging before resetting. This work includes trimming that may require saw cu tting the curb in the field to meet field conditions and to provide the required lengths. Ensure that t he construction of reset curb and edging, straight and/or circular, conform s to Subsection 906.03.1. The Contractor is responsible for maintaining the proper condition of the existing curb or edging in its removal and handling. R eplace with new material any existing curb or edging that was intended to be reset that is lost, damaged, or destroyed as a result of either the Contractor’s construction operations or failure to properly clean, store, and protect the units, at no additional cost to the Department.
906.04 Method of Measurement.
Deductions in length will be made for curbing paid under SECTION 702. Granite Curb. Granite Curb and all of its details will be measured (along the front face of the section at the finished grade elevation) by the number of linear feet of curb installed. Precast Concrete Curb. Precast Concrete Curb and all of its details will be measured (along the front face of the section at the finished grade elevation) by the number of linear feet of curb installed. Asphalt Berm. Asphalt Berm will not be measured for payment. Remove, Handle, Haul, Trim, and Reset Curb and Edging, Straight and/or Circular, All Types. Remove, Handle, Haul, Trim, and Reset Curb and Edging, Straight and/or Circular (all types) will be measured (along the front face of the section at the finished grade elevation) by the number of linear feet of curb reset.
Part 900 — Incidental Construction and Services August 2025
900-24 SECTION 906 — CURB FOR ROADWAYS Curb corners, curb transitions, apron stones, inlet stones, curb ramp transition stones, and ramp stones will be measured (along the front face of the section at the finished grade elevation) by the number of linear feet of curb reset.
906.05 Basis of Payment.
The Department will pay for the completed and accepted quantities as follows. Pay Item Pay Unit Granite Curb LF Precast Concrete Curb LF Remove, Handle, Haul, Trim, and Reset Curb and Edging, Straight and/or Circular (All Types) LF Granite Curb. The price constitutes full compensation for all labor, materials , and equipment, including excavation, joints, gravel borrow subbase course (including compaction and trimming and fine grading), saw cutting existing or new granite curb to meet field conditions, Portland cement concrete curb lock, backfilling, compacting, saw cutting (flexible or rigid pavement (all depths)), removal and disposal of existing pavements ( both rigid and flexible), removal and disposal of existing sidewalks, and all incidentals required to finish the work, complete and accepted. Precast Concrete Curb. The price constitutes full compensation for all labor, materials , and equipment, including excavation, joints, gravel borrow subbase course (including compaction and trimming and fine grading), backfilling, compacting, curb lock, saw cutting (flexible or rigid pavement (all depths)), removal and disposal of existing pavements (both rigid and flexible), removal and disposal of existing sidewalks, and all incidentals required to finish the work, complete and accepted. Asphalt Berm. The quantity of asphalt material used in the berm is not included in the C ontract unit price but , rather, is included in the unit price of the applicable surface course item. Remove, Handle, Haul, Trim and Reset Curb and Edging, Straight and/or Circular, All Types. The price constitutes full compensation for all labor, materials, and equipment, including removal and disposal of existing pavement structure (all types), excavation for removal and resetting, unless otherwise noted that resetting and excavation is to be paid for separately, all handling, hauling and stockpiling, cleaning all sections to be reset, cutting and trimming as necessary to provide the maximum ½-in. opening across the top and down the front of the curb, gravel borrow subbase course including compaction and trimming and fine grading, unless otherwise noted, the
Part 900 — Incidental Construction and Services August 2025
SECTION 906 — CURB FOR ROADWAYS 900-25 resetting of the curb or edging to line and grade, backfilling, compacting, Portland cement concrete curb lock, saw cutting existing or new granite curb to meet field conditions, saw cutting (flexible or rigid pavement (all depths)), sidewalks, and all incidentals required to finish the work, complete in place and accepted.
Referenced in this section
Get an email when 906 changes
Rhode Island revises spec sections through supplementals and new editions. We check this one every week and email you the day it changes. Free, no account.
Source: Standard Specifications for Road and Bridge Construction (Blue Book), 2022 (Aug 2025 compilation) Edition. Pages 628–632 of 951. View official source ↗