Laserfiche WebLink
I dDit <br /> Private Road Minimum Design Standar&si <br /> 6Vd0r uiial Road t`rivdie Road <br /> Elements Average Lot Size <= 10.0 acre, Avg. Lot Size <br /> 510 acres <br /> Number of 3-14 15-30 31+ 2+ <br /> Parcels or Units <br /> Minimum 50 50 50 50 <br /> Easerr:ent <br /> Width <br /> Paved Apron Req'O 'di Req'd Req'd <br /> Roadway Width 20' 22" 22' 20, <br /> Shoulder Width 1" 1' 2' 1' <br /> Minimum 60' 60 60 60 <br /> Centerline <br /> Radius(ft) <br /> Surfacing Gravel BST/ACP BSI'/ACP Gravel <br /> Requirements <br /> Minimum 4" 4" 4" 4" <br /> Crushed <br /> Surfacing <br /> Maximum 10 10 10 10 <br /> Grade(` ) <br /> Gul-de-Sac Req,d Req'd Req'd Req'd <br /> Required <br /> Approach Req'd Req'd Req'd Req'd <br /> Permit <br /> Stopping Sight WSDOT& WSDOT& WSDOT& WSDOT& <br /> Distance AASHTO AASHTO AASHTO AASHTO <br /> Ditch Slope 2.1 2:1 2:1 2:1 <br /> (inside slope) <br /> 12.04.04.060 Geotechnical Investigation. <br /> If required,geotechnical concitions shall be investigated and tested in accordance with the latest edition. <br /> as amended versions of the WSDO-1 Geotechnical Design Manual or AASHTO Design Manual.The Count), <br /> Engineer may require additional geotecrnical investigation based upon specific site conditions. All <br /> geotechnical work shall be completed by a geotechnical engineer licensed in the State of Washington. <br /> pit e 22 F '"iitas Cc L,r,-Y 14 '" r;; r400pr�or r� 101.11')12023 <br />