420.1 420.2(f)
420.1DESCRIPTION—This work is the construction of plant -mixed asphalt concrete pervious pavement
on a prepared surface designed to allow the infiltration of storm water into the subsoil. The pervious asphalt surface layer is a horizontal plane that is permeable to water and air. The second layer of the storm water system is an open graded, angular stone layer that is used for temporary storm water detenti on.
420.2MATERIAL —
1 .a For use in Asphalt JMF. Coarse Aggregate, Type A, Section 703.2, except Table C gradation does not apply and revise the following quality requirements of Table B.
• Abrasion, Maximum Percent as specified in Bulletin 27, Chapter 2A, Table 6A.
• Thin and Elongated Pieces, Maximum Percent as specified in AASHTO M 323, Table 6 , for Flat and Elongated. • Crushed Fragments, Minimum Percent, as specified in AASHTO M 323, Table 6 , for Fractured Faces, Coarse Aggregate.
1.b For use in Detention B asin. Either AASHTO No. 3 as the primary detention coarse aggregate topped with AASHTO No. 57 as a choker and leveling coarse; or AASHTO No. 57 only, as designed and specified.
2.a For use in Asphalt JMF. Section 703.1, except Table A gradation does not apply and as follows: Determine the un- compacted void content according to AASHTO T 304, Method A, or use the value listed in Bulletin 14, and conform to AASHTO M 323, Table 6 . Determine the sand- equivalent value according to AASHTO T 176 and conform to AASHTO M 323, Table 6.
2.b For use in Detention B asin. Fine Aggregate, Type A or Type B.
106.02(a)2.c ) when specified and of sufficient strength to resist lateral roller forces where the pervious asphalt
adjoins landscaped areas to provide a clean, durable edge for the pavement. Other edge restraints may be utilized with the approval of the Representative. For manufactured edge restraints, i nstall in accordance with the manufacturer’s guidelines . Provide black edge restraints when permanently incorporated into the project.
in Section 702. Approved polymer additives or ground tire rubber may be used to meet the PG grade.
420.2(g) 420.2(h) Initial Edi