Recently in my email inbox, there has been some discussion on hanging posted signs on live trees with aluminum nails.  I've read that using aluminum nails does negligible damage to the tree. 

The computer screen background on this webpage is a nice array of taphole maple lumber.  The taphole causes an injury and a stain column forms above and below the hole.  The length of the stain column appears to be proportional to the size of the taphole.  Smaller holes appear to lead to a shorter stain column. 

Consider that a 5/16" diameter drill bit might cause 25 cu. in. of stained wood when hole depth is 2".  That's a hole volume of about 0.153 cu. in. giving rise to 25 cu. in. of stained wood.

An 11 ga aluminum nail has a diameter of 0.12".  Let's say that we need to pound the nail in 1" to effectively hang a sign.  That's a hole volume of about 0.011 cu. in.(per nail!), which is about 14 times smaller than the taphole considered above.  If a 5/16" diameter hole in 2" deep gives 25 cu in of stained material, then it might be reasonable to assume that a single 11 ga aluminum nail wound would give 25/14 or about 2 cu in of stained material.  If you need 4 nails to hang a sign, that's 8 cu. in. of stained wood.  Use 8 nails and the damaged area grows to 16 cu. in., which is approaching the damage of a taphole.

Now, there are a lot of assumptions here!  But it seems that using nails of any variety might cause "significant" damage to sawtimber.  Please poke holes (pun intended!) in my argument and/or point to research.

Views: 366

Reply to This

Forum

Agroforestry

Started by Carl DuPoldt in Agroforestry Aug 11. 0 Replies

Agroforestry can increase soil health, agroecosystem biodiversity, soil and total organic carbon, nectar/pollen/resin resources, reduces soil disturbance, increasing opportunities for agroforestry can reduce economic and ecosystem risksContinue

IPhone surveys

Started by Jim Martin in Woodlot Management Jul 11. 0 Replies

Smart phones have GPS.  Has anyone figured out how to use them for mapping wooded land.  I am especially interested in a way to map  my logging trails. Jim MartinContinue

Slash and squirt control of Ailanthus

Started by Mark Horberg in Woodlot Management. Last reply by Kevin Mathers Jun 22. 3 Replies

I have 20-30 ailanthus trees on my property in the 4-6 inch diameter range.  What specific herbicide and concentration should I use for slash and squirt?  Can you recommend a place where it can be purchased in small quantities?  Thanks. Continue

Urban Forestry Presentation Link

Started by Carl DuPoldt in Forest Health May 24. 0 Replies

Urban Forestry Presentation Link ---- …Continue

Stone Walls

Started by Brett Chedzoy in Woodlot Management May 14. 0 Replies

One of my first "real" jobs in forestry in the mid-1990's was in southern New England.  Although I had seen some stone walls here and there growing up in NY, I had never seen stone walls like those of coastal New England.  I remember one property on…Continue

Do Trees Talk to each other? See Video

Started by Alicia Rose in Forest Health Apr 24. 0 Replies

Suzanne Simard: How trees talk to each other | TED TalkVideo for How trees communicate with each other▶ 18:19https://www.ted.com/.../suzanne_simard_how_trees_talk_to_each_…Continue

Forest Health

Started by Carl DuPoldt in Forest Health Mar 8. 0 Replies

Why Logs Are Important ---…Continue

Forest Adaptation Resources Climate Change Tools and Approaches for Land Managers

Started by Alicia Rose in Forest Health. Last reply by Carl DuPoldt Mar 1. 1 Reply

Forest Adaptation Resources: Climate Change Tools and Approaches for Land Managers, 2nd edition link -- https://www.fs.fed.us/nrs/pubs/gtr/gtr_nrs87-2.pdf---------------------Adaptive…Continue

Badge

Loading…

© 2018   Created by Peter Smallidge.   Powered by

Badges  |  Report an Issue  |  Terms of Service