12 m bench, 8 m berm, 70° face, 4 benches
Girdi: Bench height 12 m, berm width 8 m, face angle 70°, bench count 4, target overall slope angle 45°
Çıktı: Overall slope angle 49.2°, margin -4.2°, required berm width 10.2 m, danger side
Open pit geometry
Open Pit Bench Tasarım Denetleyici
Calculate the overall slope angle from bench height, berm width, face angle, and bench count.
Sonucu hedef bir açıyla karşılaştırın, güvenli / yakın / tehlike durumunu görün ve bölümü tarayıcıda önizleyin.
Auto-calculate the section geometry
Show safe / near / danger at a glance
Switch between metric and imperial
Safety notice
- This is a geometry denetleyici, not a substitute for geotechnical stability analiz or rockfall analiz.
- It checks the consistency of bench height, berm width, face angle, and overall slope angle, but it does not judge legal compliance.
- Hedef karşılaştırması tehlike tarafına yakın veya üzerindeyse, tasarımı her zaman bir jeoteknik gözden geçirenin onaylamasını sağlayın.
- Water, blast damage, rock quality, equipment width, and drainage conditions are not part of this tool.
How to use
- 1 Enter bench height, berm width, face angle, and bench count.
- 2 Tasarımı bir referans açıyla karşılaştırmak istiyorsanız, hedef genel eğim açısı ekleyin.
- 3 Choose metric or imperial, then open Ayarlar if you want to change precision or sharing behavior.
- 4 Review the overall angle, the target margin, the exact-match values, and the previewed cross-section.
- 5 Aynı koşulu daha sonra yeniden kullanmak için Sonucu kopyala, Paylaşım URL'sini kopyala, Sıfırla veya son listeyi kullanın.
Sample
The same geometry in imperial
Girdi: Bench height 39.37 ft, berm width 26.25 ft, face angle 70°, bench count 4, target overall slope angle 52°
Çıktı: Overall slope angle 49.2°, margin +2.8°, safe side
SSS
Is the angle measured from the horizontal?
Yes. Both the bench face angle and the overall slope angle are measured from the horizontal.
What happens when berm width is 0?
The overall angle moves closer to the face angle, but the tool still warns you because that is rarely practical in the field.
What if the target angle cannot be matched exactly?
The required berm width or required face angle can fall outside a workable range. In that case the exact-match helper shows that the target is not achievable with the current geometry.
Does this include local regulations or safety standards?
No. The tool stays limited to geometry and unit conversion so that it can be used globally without embedding local rules.
Can I work in both metric and imperial units?
Yes. The unit switch converts the bench height and berm width while keeping the geometry and the formulas the same.
Glossary
Bench height
The vertical height of one bench.
Berm width
The horizontal width between benches.
Face angle
The face angle measured from the horizontal.
Overall slope angle
The angle of the whole bench stack when you look at the section from crest to toe.
Face setback
The horizontal run of one bench face.
Formulas
- map[Text:face_run = h / tan(a) text:face_run = h / tan(a)]
- map[Text:total_height = h × n text:total_height = h × n]
- map[Text:total_run = (face_run × n) + (w × max(n - 1, 0)) text:total_run = (face_run × n) + (w × max(n - 1, 0))]
- map[Text:overall_angle = atan(total_height / total_run) text:overall_angle = atan(total_height / total_run)]
- map[Text:margin = target - overall_angle text:margin = target - overall_angle]
- map[Text:required_berm_width = (total_height / tan(target) - n × face_run) / (n - 1) text:required_berm_width = (total_height / tan(target) - n × face_run) / (n - 1)]
- map[Text:required_face_run = (total_height / tan(target) - (n - 1) × w) / n text:required_face_run = (total_height / tan(target) - (n - 1) × w) / n]
- map[Text:required_face_angle = atan(h / required_face_run) text:required_face_angle = atan(h / required_face_run)]
Notlar
- This tool does not cover water, blasting, rock quality, or equipment clearance.
- If the target comparison is near the threshold, do not rely on rounding alone to make the decision.
- If your site has a regional standart or company standart, follow that first.
- Use this for geometric checks only. A real slope tasarım still needs a geotechnical review.