CATEGORY 600 SHOULDERS SECTION 609 — SHOULDER EDGE DROP OFF GRADING ADJUSTMENT
609.01 Description
Construct the area adjacent to the outside edge of the shoulder to eliminate the shoulder edge drop off.
609.02 Materials
Refer to 605.02, 701.02, 705.02, 708.02, 709.02, and the following: Crusher Run Aggregate CR-6 901.01 Salvaged Topsoil 920.01.01 Furnished Topsoil 920.01.02 Asphalt Millings or Grindings Size of individual particles shall be less than 2 in. as determined visually.
609.03 Construction
When the outside edge of the shoulder is greater than 2-1/2 in. above the existing groundline, place a wedge of topsoil installed as specified in Section 701, or crusher run aggregate CR-6, or asphalt millings or grindings, in designated areas as specified or as directed. Grade the topsoil, or crusher run aggregate CR-6, or asphalt millings or grindings, to a slope of 4:1 or as directed. Compact the material as specified or as directed. Immediately after grading topsoil, perform either of the following as specified or as directed:
a.Perform Turfgrass Establishment as specified in Section 705 and immediately install Type A or Type E Soil Stabilization Matting as specified in Section 709.
b.Perform Turfgrass Sod Establishment as specified in Section 708. Complete the grading adjustment and install all materials by the end of the day that the drop off is created and prior to opening to traffic. The material, lines and grades, and the cross section shall be as specified. 2025 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS.
609.04 Measurement and Payment
The payment will be full compensation for all material, labor, equipment, tools, disposal fees and incidentals necessary to complete the work.
609.04.01 Placing Salvaged Topsoil for Grading Adjustment or Placing Furnished Topsoil for
Grading Adjustment will be measured and paid for at the Contract unit price per square yard, or as specified.
609.04.02 Crusher Run Aggregate CR-6 or Asphalt Millings or Grindings for Shoulder Edge Drop
Off will be measured and paid for at the Contract unit price per square yard, or per ton.
609.04.03 Turfgrass Sod Establishment or Turfgrass Establishment will be measured and paid for
at the Contract unit price per square yard.
609.04.04 Type A Soil Stabilization Matting or Type E Soil Stabilization Matting will be
measured and paid for at the Contract unit price per square yard. 2025 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS. 610 — SHOULDER RUMBLE STRIPS 2025 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS CATEGORY 600 SHOULDERS SECTION 610 — SHOULDER RUMBLE STRIPS
610.01 Description
Grind or mill depressions into existing asphalt mix or Portland cement concrete to form rumble strips.
610.02 Materials
Not applicable.
610.03 Construction
Place rumble strips as specified. Grind or mill the rumble strips into asphalt mix at a rate of at least 4000 strips per hour. Grind into Portland cement concrete at a rate of at least 1000 strips per hour. Equipment. The equipment shall have rotary type cutting heads with a length of 16 in. and an outside diameter not greater than 24 in. The cutting heads shall have the cutting tips arranged in a pattern providing a relatively smooth cut (approximately 1/16 in. between peaks and valleys). The cutting heads shall be mounted on their own suspension, independent of the power unit, to allow the tool to self-align with the slope of the shoulder and any irregularities in the shoulder surface. The cutting tool shall be equipped with guides to provide consistent alignment of each cut in relation to the roadway and to provide uniformity throughout the project. The Engineer will randomly check the pattern edge alignment. Control Strip. Grind a control strip at least 100 ft in length to demonstrate that the speed of operation, dimensions, and texture are acceptable. Clean up. Sweep or vacuum the work area before reopening the roadway to traffic. Do not sweep the material to the side of the road.
Source: Maryland Standard Specifications for Construction and Materials, 2025 Edition. Pages 783–784 of 1,113.