424.06 Basis of Payment.
b.Payment will be made under Item N o.: 424-A Superpave Bituminous Concrete Wearing Surface Layer, ** , *** Maximum Aggregate Size Mix, ESAL Range **** - per ton {metric ton} 424-B Superpave Bituminous Concrete * Binder Layer, ** , *** Maximum Aggregate Siz e Mix, ESAL Range **** - per ton {metric ton} 424-C Superpave Bituminous Concrete Base Layer, ** , *** Maximum Aggregate Size Mix, ESAL Range **** - per ton {metric ton} * Specify either “Upper” or “Lower”. ** Specify "Patching", " Leveling", "Widening", etc. only when required. *** Specify Maximum Aggregate Size: 3/8", 1/2", 3/4", 1", or 1.5" {9.5 mm, 12.5 mm, 19.0 mm, 25.0 mm, or 37.5 mm}. **** Specify “A/B”, “C/D”, or “E”. SCORING BITUMINOUS PAVEMENT SURFACE
428.01 Description.
This Section shall cover the work of scoring bituminous plant mix pavement surfaces at locations shown on the plans or directed by the Engineer. The scoring shall consist of cutting grooves, at regular intervals in the shoulder pavement surface.
428.02 Ma terials.
N/A
428.03 Construction Requirements.
a.General . It is intended that areas of the pavement surface designated by the plans or by the Engineer to be scored shall be so done as to produce a rumble strip effect to alert inattentive drivers. The siz e, shape, and spacing of the grooves formed during the cutting procedure shall be as shown on the plans unless a different configuration is approved by the Construction Engineer. Unless ordered otherwise by the Engineer, all grooves shall be perpendicular to the pavement edge.
b.Equipment . The scoring equipment shall consist of a rotary type cutting head with cutting tips arranged in a pattern that will provide a smooth cut. The cutting head shall be on its own independent suspension from that of the powe r unit to allow the tool to align with the slope of the shoulder and any irregularities in the shoulder surface.
c.Operational Requirements . The equipment shall be operated in a workmanlike manner that will satisfactorily produce a pavement surface havin g uniform grooves of the dimensions and spacing as shown on the plans or specified in this Article. Equipment used to construct scored shoulders shall be positioned by using methods which will avoid scoring at locations other than those designated on the p lans or directed by the Engineer. The debris that results from cutting shall be removed on a daily basis by a sweeper/vacuum or other approved methods.
428.04 Method of Measurement.
The scoring of bituminous pavement surface ordered and accepted will be measured per mile {kilometer} along the centerline of each row of grooves placed either by direct measurement and computation to the nearest 0.001 mile {0.001 kilometer} or by odometer to the nearest 0.001 mile {0.001 kilometer}. When more than one row of grooves is required on a surface, each row will be measured separately. The length of scoring measured will include any gaps shown on the plans as part of the design of the scoring but will not include the length of any other gap or section omitted by the E ngineer.
430.01 Description.
428.05 Basis of Payment.
a.Unit Price Coverage . The scoring of bituminous pavement surface, measured as noted above, will be paid for at the contract unit price bid which shall be full compensation for the scoring of the pavement, and for all materials, equipment, tools, labor, and incidentals necessary to complete the work.
b.Payment will be made under Item No .: 428-A Scoring Bituminous Pavement Surface – per mile {kilometer} SECTION 430 SOIL OR AGGREGATE TYPE SURFACE
430.01 Description.
The work under this Section shall consist of constructing a temporary or permanent surface course of soil type material (Selected Material, Granular Soil or Soil Aggregate, etc.) or graded aggregate type material. The plans or proposal will designate the type of material to be used.
430.02 Material.
All material furnished for use shall meet the appropriate requirements of Division 800, Materials, for the classification of material specified by the pay item.
430.03 Construction Requirements.
a.Equipment . Selection of the appropriate type of equipment to satisfactorily accomplish the work will, in general, be at the option of the Contractor.
b.Preparation of Underlying Surface . Before placing the surface material, the subgrade shall comply with the requirements of Subarticle 301.03(a). If the soil or aggregate surfacing is to be used in a temporary manner for handling traffic, the requirements for underlying surface preparation may be modified as shown on the plans, or directed by the Engineer, and control elevation stakes will not be necessary. If the soil or aggregate surfacing is used for shoulder construction adjacent to the resurfacing of the roadway, the requirements given in Subarticle 301.03(a) will not be appli cable and the underlying surface shall be compacted as directed by the Engineer.
c.Placing, Spreading and Shaping . Local type materials (Selected Material, Granular Soil, and Soil Aggregate) shall be yard mixed as described in Item 301.03(c)3 before bein g hauled to the roadbed. Approved surfacing material may be dumped directly on the prepared subsurface and the material spread to the width and depth shown on the plans or directed. Water shall be added if so directed. Mixing will not be required unless so specified on the plans. If mixing is specified, it shall be performed in accordance with the requirements of Item 301.03(c)2. Upon completion of the spreading, the material shall be shaped to the cross section shown on the plans and rolled to a smooth riding surface, free from high spots or depressions and satisfactory to the Engineer. Specific density requirements are waived; however, it shall be compacted to the satisfaction of the Engineer. After being placed and shaped to proper crown and grade the sur face shall be shaped at frequent intervals as directed and shall be kept free of ruts and holes. New material shall be added and bladed as needed and as directed. The surface shall be maintained in satisfactory condition in the manner described above until the contract is accepted.
430.04 Method of Measurement.
The quantity of surfacing material placed on the roadbed will be measured in cubic yards {cubic meters} in accordance with the provisions of Subarticle 109.01(i), or per ton {metric ton} measured by weight {mass} in accordance with the provisions of Subarticle 109.01(h).
Source: Alabama Standard Specifications for Highway Construction, 2022 Edition. Pages 246–246 of 934.