Loading...
The URL can be used to link to this page
Your browser does not support the video tag.
Home
My WebLink
About
Addenda - 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.