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July 20, 2020 page 33 <br />(4) Intersections shall be designed with a flat stopping area of at least 30 feet in a residential area 1391 <br />and 60 feet in a commercial or industrial area. The stopping area shall be designed to provide a 1392 <br />maximum grade of two percent. 1393 <br />(5) Where any street intersection will involve earth banks or existing vegetation inside any lot corner 1394 <br />that would create a traffic hazard by limiting visibility, the subdivider shall cut such ground and/or 1395 <br />vegetation (including trees) in connection with the grading of the right-of-way to the extent 1396 <br />deemed necessary by the city to provide an adequate sight distance. 1397 <br />(6) The crown of all streets, including intersections, shall be three percent or less. 1398 <br />(d) Typical section. Typical sections shall be as prescribed in the Orono Standard Construction Details, 1399 <br />as amended from time to time. Soil borings may be required to be determined by the city. 1400 <br />(1) Private street, residential 1401 <br />Units R.O.W.* <br />(feet) <br />M.P.W.** <br />(feet) <br />3—6 50 24 <br />Over 6 50 28 <br />Cul de sac 50 radii 45 radii <br /> 1402 <br />(2) Public street, residential 1403 <br />Units R.O.W.* <br />(feet) <br />M.P.W.** <br />(feet) <br />3—10 50 28 <br />Over 10 50 32 <br />Cul de sac 50 45 radii <br /> 1404 <br />Maximum cul-de-sac length = 1,000 feet 1405 <br />Maximum number of units on cul-de-sac = 10 1406 <br />(3) Public street, commercial or industrial 1407 <br />Units R.O.W.* <br />(feet) <br />M.P.W.** <br />(feet) <br />1+ 70 32 <br />Cul de sac 50 45 <br /> 1408 <br />*Right-of-Way Width 1409 <br />**Minimum Paved Width 1410