HomeMy WebLinkAboutAddenda - RFP - P982 BOBCAT RIDGE TRAIL DESIGN AND CONSTRUCTON (27) 2309.18,2.32c, Ex. 01
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FSH 2309.18 - TRAILS MANAGEMENT HANDBOOK
WO AMENDMENT 2309.18-91-2
EFFECTIVE 11/8/91
2.32c - Exhibit 01
Four-Wheel Drive Way Guide
Easiest 1/ More Difficult 2/ Most Difficult
Grade
Max. Sustained
(200-300) 20% 20% 30%
Max. Pitch 20% 30% 50%
Clearance
Width Ample clearance 12.5' 8'
for logging truck.
Height Ample clearance 9' 8'
for logging truck.
Travel Way
Width 10' 5.0' for 70" 5.0' for 70" vehicle
vehicle width width (hub-to-hub).
(hub-to-hub).
Surface Rough, irregular. Some sections are Rough to very rough.
Travel with low- relatively rough. Long sections of loose
clearance vehicles Large rocks, mud rock, sand, mud. Stream
is difficult. holes, loose material crossings and large
Might require some boulders. Winching
winching. sections.
Obstacles None 1 to 5 small logs 1 to 5 logs (up to 10"
(optional) (up to 6" diameter) diameter) per mile lying
per mile on flat flat on terrain. Large
terrain. boulders.
Flow Two-way traffic Two lock-to-lock Five lock-to-lock
difficult and require turns within 150'. turns within 150'.
backing to pass.
2.32c - Exhibit 01 -- continued
Travel Way Plain Level only as 20% 30%
(outslope) necessary for drainage.
Average Some slow-speed 4 to 10 mph 2 to 4 mph
Speed sections.
Length of
Day Trip 30 to 40 miles 10 to 15 miles 10 miles
1/ Easiest trails usually are built for other purposes.
2/ Most difficult for long-wheelbase vehicles. Short-wheelbase vehicles have maximum hub-to-hub length of 100 inches (for example, Blazers, CJ4's, and Jeeps, which have a 90-inch length).