. Planning single-span skylines. Logging, Skyline. LOCATE SKYLINE ROADS Locate skyline roads, using anchors, landings, and spars referenced on the plan view. Spacing should be carefully con- sidered as in initial skyline road location (). The bearing and distance needed for profile traversing of each skyline road may be taken from the plan view. TRAVERSE SKYLINE ROAD PROFILES A skyline road traverse is similar to the boundary traverse, but it is run as a tan- gent from anchor point to anchor point. The resulting field notes are used to plot the ground profile of each skyline road.
. Planning single-span skylines. Logging, Skyline. LOCATE SKYLINE ROADS Locate skyline roads, using anchors, landings, and spars referenced on the plan view. Spacing should be carefully con- sidered as in initial skyline road location (). The bearing and distance needed for profile traversing of each skyline road may be taken from the plan view. TRAVERSE SKYLINE ROAD PROFILES A skyline road traverse is similar to the boundary traverse, but it is run as a tan- gent from anchor point to anchor point. The resulting field notes are used to plot the ground profile of each skyline road. Side-slope notes taken at each compass setup are useful in designing skyline roads. In areas where there is little or no var- iation in topography, it may not be neces- sary to traverse each road, but a mini- mum of one profile should be run for each cutting unit. Any change in topography warrants a profile traverse. PLOT SKYLINE ROAD PROFILES Procedures for designing a skyline road profile by use of field notes are the same as a trial profile. Profile notes should also be plotted as outlined in , and hori- zontal length and difference in elevation should be checked with the cutting unit plan view. Errors in excess of allowable closure should be found and corrected. Side-slope notes may be used to move a profile laterally and take advantage of a more suitable profile—this would avoid the cost of an additional traverse. This procedure is similar to adjusting the "P" (preliminary) line of a vehicle access road. DETERMINE DEFLECTION, TENSION, AND LOAD-CARRYING CAPABILITY Once the profile has been completed, deflection and tension may be determined by procedures outlined in Lysons and Mann's handbook (see footnote 3). If de- flection is adequate, cutting unit plan view and profiles may be detailed in final form. If deflection is not adequate, skyline roads must be relocated. Figure 3 illustrates a cutting unit plan view showing location of skyline road
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