Safety notice

Girdi bu tarayıcıda kalır ve bir sunucuya gönderilmez.

Do not trust a single number. Check footing, wind, crown weight, and the actual fall path first.
Keep clear of roads, drop-offs, dead branches, and power lines before the cut starts.
If the escape side looks unsafe, choose another direction and re-evaluate on site.

Ormancılık Araçlar

Tree Felling Safety Zone Hesaplayıcı

Q: "Does it work without a connection?"

"Evet. Tüm hesaplamalar tarayıcıda çalışır, bu nedenle çevrimdışı olsanız bile kullanışlı kalır."

Q: "Can I use this for legal or regulatory judgment?"

"No. It is a field aid only. Follow site rules, local law, and the supervisor's instruction."

Q: "How does auto direction work?"

"Auto mode compares slope and nearby obstacles, then chooses the more conservative of the uphill, cross-slope, and downhill options. It does not replace site judgment."

Q: "What should I enter as obstacles?"

"Enter roads, structures, standing trees, snags, or power lines that could affect the escape path."

Q: "Paylaşım URL'si neleri içeriyor?"

"Ağaç yüksekliği, eğim, geri çekilme yönü, engel sıraları ve hafif ayarlar URL'de kodlanmıştır."

Q: "Can I mix meters and feet?"

"Yes, if the units are explicit. Keep a consistent notation whenever possible."

Ağaç yüksekliğini, eğimi, geri çekilme yönünü ve yakındaki engelleri girerek geri çekilme mesafesini ve hariç tutma yarıçapını tahmin edin.

Muhafazakar bir saha yardımcısı olarak tasarlandığından, çevrimdışı kullanışlı kalır ve yasal bir belirleme yapmaya çalışmaz.

45° escape-angle guide

Uses two tree lengths as the base

Obstacle-aware

Çevrimdışı friendly

How to use

1 Enter tree height and slope. Slope can be entered as angle, percent grade, or a 1:n ratio.
2 Set the retreat direction to Auto, Uphill, Cross-slope, or Downhill if you need to override the suggestion.
3 Add adjacent obstacles such as roads, structures, standing trees, snags, or power lines.
4 Review the retreat distance and exclusion radius, then use the result only as a support aid.

Sample

24 m / 12° / auto / snag 6 m

Girdi

Tree height 24 m / slope 12° / retreat direction auto / obstacle: snag 6 m

Çıktı

Uphill is selected. Retreat distance is about 12.7 m, and exclusion radius is about 50.6 m.

80 ft / 18% / uphill / road 10 ft

Girdi

Tree height 80 ft / slope 18% / retreat direction uphill / obstacle: road 10 ft

Çıktı

Uphill is selected. Retreat distance is about 42 ft, and exclusion radius is about 167 ft.

SSS

Does it work without a connection?

Evet. Tüm hesaplamalar tarayıcıda çalışır, bu nedenle çevrimdışı olsanız bile kullanışlı kalır.

Can I use this for legal or regulatory judgment?

No. It is a field aid only. Follow site rules, local law, and the supervisor's instruction.

How does auto direction work?

Auto mode compares slope and nearby obstacles, then chooses the more conservative of the uphill, cross-slope, and downhill options. It does not replace site judgment.

What should I enter as obstacles?

Enter roads, structures, standing trees, snags, or power lines that could affect the escape path.

Paylaşım URL'si neleri içeriyor?

Ağaç yüksekliği, eğim, geri çekilme yönü, engel sıraları ve hafif ayarlar URL'de kodlanmıştır.

Can I mix meters and feet?

Yes, if the units are explicit. Keep a consistent notation whenever possible.

Glossary

Retreat distance

The distance you should move away from the stump once the cut is underway.

Exclusion radius

A conservative radius around the tree and its fall path where people should stay out.

Retreat direction

The direction used for escape, such as uphill, cross-slope, or downhill.

Slope buffer

Eğim nedeniyle geri çekilme tahminine eklenen ekstra mesafe.

Obstacle buffer

Extra distance added because nearby obstacles may block the retreat route.

Field judgment

The site-specific decision made by the crew after checking the actual conditions on the ground.

Calculation formulas

Reference angle = 45°
Effective length = tree height + slope buffer + obstacle buffer
Retreat distance guide = max(minimum retreat distance, effective length × 0.5)
Exclusion radius guide = max(2 × tree height, 2 × effective length)
Slope buffer = tree height × grade × direction factor
Grade = tan(slope angle)

Notice

This tool is not a legal determination. Follow site rules, local law, and the supervisor's instruction first.
Do not rely on the numeric result alone when there are roads, power lines, drop-offs, or other serious hazards nearby.
On steep slopes, confirm footing and escape routes before you move.
Çevrimdışı çalışır, ancak yazdırma ve konumla ilgili özellikler cihaza ve tarayıcıya bağlı kalır.
Paylaşım URLs include your inputs. Do not put private site names into a link you plan to publish.