Pair slope
Input profile=road distance=120m deltaElevation=18m uphill
Output 15.0%, 8.5°, uphill 1:6.7, danger
Pemeriksa Kemiringan Jalan Hutan
Hitung kemiringan dari dua titik atau dari daftar titik rute, lalu sorot segmen berbahaya.
Dibuat untuk pemeriksaan cepat pada jalan hutan, skid trail, dan rute cable yarding di seluruh dunia.
Switch between pair and route-list checks on one screen
See hazard segments in the table and profile chart
Share URLs and keep local state
Safety Notice
- This tool is for quick slope checks. Local conditions, soil, surface condition, vehicle type, load, and machine method can change the decision.
- Whether it is a forest road, skid trail, or cable yarding route, final decisions should follow local standards and on-site checks.
- Cable yarding cannot be judged by slope alone. Check skyline and equipment conditions separately.
- Hazard labels are warnings, not proof of approval or compliance.
How to Use
- Choose either pair mode or route-point-list mode.
- Choose a distance unit and a profile.
- Enter the distance and elevation change, or enter the point list.
- Review the hazard segments, then copy the result or the share URL if needed.
Contoh
Downhill slope
Input profile=skid distance=80m deltaElevation=12m downhill
Output 15.0%, 8.5°, downhill 1:6.7, caution
Route point list
Input 0/320, 40/323, 90/332, 130/334, 170/342
Output Highlight hazard segments in the table and profile chart
Glossary
grade
The ratio of elevation change to horizontal distance. Percent is grade x 100.
chainage
Cumulative horizontal distance along the route. It becomes the reference for route-point segments.
skid trail
A trail used to move felled logs to the landing. Terminology varies by region.
cable yarding
A yarding method that uses a cable or skyline system. Slope matters, but slope alone is not enough.
Formulas
grade = rise / run
grade% = grade * 100
angle° = atan(grade) * (180 / π)
1:n = 1 : (run / |rise|)
total ascent = Σ max(Δelevation, 0)
FAQ
Why do you use horizontal distance?
Because slope is defined against horizontal distance, not route length or surface length.
How do I enter chainage for route points?
Enter cumulative horizontal distance in increasing order. Each point must be greater than the one before it.
How far does metric/imperial support go?
The tool switches the distance and elevation units. The calculation itself stays the same; only the display is localized.
Are the thresholds universal?
No. Profiles are starting values. Switch to custom and tune them for the local conditions and machine method.
Can I use it for cable yarding?
Yes, for organizing slope data. It is not a substitute for skyline design or equipment design.
Peringatan penting
- Profiles are starting points. They are not fixed operating standards.
- Enter route points in increasing chainage order. If the order breaks, segment slope calculations break too.
- GPS or map auto-import is not part of v1. If needed, clean the data elsewhere and paste it in.