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HomeMy WebLinkAboutAddenda - RFP - P982 BOBCAT RIDGE TRAIL DESIGN AND CONSTRUCTON (12) 2309.18,2.31a, Ex. 01 Page 1 of 1 FSH 2309.18 - TRAILS MANAGEMENT HANDBOOK WO AMENDMENT 2309.18-91-2 EFFECTIVE 11/8/91 2.31a - Exhibit 01 Hiker Trail Guide  Easiest More DifficultMost Difficult 1/     Grade  Max. Pitch  Grade20%30%+30%    Length100'300'500'      Clearing 2/  Width48"36" to 48"36"     Height8'8'8'      Tread 3/  Width18" to 24"12" to 18" 12"   Obstacle-freeIf needed, depending on   volume and drainage    SurfaceSpot gravel surfacingNot surfaced-- No graded tread except on  leave roots, side slopes over 50% where  imbedded rocks,safety or resource damage  and some logs.is a problem     1/ Upper limit of grade and pitch length for most difficult trails depends on soil type, amount of rock, vegetation type, and other conditions affecting stability of the trail surface. 2/ Curve alignment to avoid cutting large trees. 3/ Increase tread width 6 inches on switchbacks or where side slopes exceed 60 percent.