111 ALASKA 2020 SECTION 303
303-1.01 DESCRIPTION . Recondition the surface of an existing roadbed, clean and recondition
the ditches, and shape the shoulders.
303-2.01 MATERIALS. None.
303-3.01 CONSTRUCTIO N REQU IREMENTS. Scarify the existing surface to the depth shown
on the Plans. Pulverize material to 2 inches or smaller. Clean and recondition the ditches and shape the shoulders as shown on the Plans. Spread surface material to line and grade and compact uniformly as specified in Subsection 203- 3.04. Compact pulverized asphalt using alternate method acceptable to the Engineer. The reconditioned surface will be tested using a 10- foot straightedge at selected locations. Limit surface deviations to 1 inch prior to placement of a base course or 3/8 inch prior to placement of a surface course, as measured from the testing edge of the straightedge between two contacts with the surface. Maintain the surface satisfactorily until the base or surface course has been plac ed. Apply additional water, as required.
303-4.01 METHOD OF M EASUREMENT. See Section 109.
303-5.01 BASIS OF PA YMENT. Water required for compaction and maintenance is subsidiary.
Payment will be made under: PAY ITEM Item Number Item Description Unit 303.0001.____ Reconditioning STA 303.0002.____ Reconditioning MILE 303.0003.____ Reconditioning LS 112 ALASKA 2020 SECTION 304 SUBBASE
304-1.01 DESCRIPTION . Construct a subbase course on an approved foundation, as shown on
the Plans.
304-2.01 MATERIALS. Use materials that conform to the following, for the grading specified:
Aggregate Subsection 703- 2.09 Crushed glass may be combined with soil -aggregate material to be used in subbase construction. Meet 703- 2.15 requirements.
304-3.01 CONSTRUCTIO N REQUIREMENTS. Place and compact subbase material to meet the
requirements of Subsections 203- 3.01, 203- 3.03, and 203- 3.04. The material will be accepted for gradation based on random samples taken from the roadway after spreading but prior to compaction. When subbase material i s utilized as the finished wearing course, place and compact to meet Subsections 301- 3.01 through 301- 3.03. Do not place subbase soil -aggregate containing glass cullet:
1.Within four feet from the face of any embankment slope,
2.Within 150 feet from any surface water body,
3.In embankment areas where culvert placement is required,
4.In contact with any geosynthetic material.
304-4.01 METHOD OF M EASUREMENT. See Section 109. Item 304.0002.____ is measured in
place.
304-5.01 BASIS OF PA YMENT. Water for compaction added to the subbase on the grade, is
subsidiary. Payment will be made under: PAY ITEM Item Number Item Description Unit 304.0001.____ Subbase, Grading ___ TON 304.0002.____ Subbase, Grading ___ CY 304.0003.____ Subbase, Grading ___ CYVM
Source: Alaska Standard Specifications for Highway Construction, 2020 Edition. Pages 139–139 of 584.