working out hopist feet ?

[tommer9]

Either mid girth in inches squared and divided by 16 or mid quarter girth squared and divide the lot by 144 to get back to square feet (Hoppus)

 

e.g..10 foot long 48 inch girth log

 

=10*48*48/144/16

 

=10*12*12/144

 

10' long 48" diameter is (48/4)squared, divided by 144, times the length of the log (10'). Where did you find the divide by 16 bit? Never heard of that before?

By the dividing by 16 method you are a foot out.....

[aspenarb]

I thought STYT was the best way ascertain timber values when buying.Its what everyone round here uses.

 

Bob

[openspaceman]

10' long 48" diameter is (48/4)squared, divided by 144, times the length of the log (10'). Where did you find the divide by 16 bit? Never heard of that before?

By the dividing by 16 method you are a foot out.....

 

Read your first post, you mentioned quarter girth when I think you mean girth.

 

Both the equations I gave to illustrate my point give 10 Hft as the answer

[openspaceman]

I thought STYT was the best way ascertain timber values when buying.Its what everyone round here uses.

 

Bob

 

I give up is it newspeak for something?

 

I gave up buying timber when I couldn't sell it for more.

[tommer9]

Read your first post, you mentioned quarter girth when I think you mean girth.

 

Both the equations I gave to illustrate my point give 10 Hft as the answer

 

No, I meant mid quarter girth.

The formula is as follows, and nothing else:

mid quarter girth squared (in inches) times the length in feet, divided by 144.

That is it.

End of.

Never mind dividing by anything else, that would be wrong.

I must have explained this a gazillion times on this forum BTW

[tommer9]

https://www.google.co.uk/search?q=hoppus+foot+formula+site:arbtalk.co.uk&newwindow=1&gws_rd=ssl

[openspaceman]

No, I meant mid quarter girth.

The formula is as follows, and nothing else:

mid quarter girth squared (in inches) times the length in feet, divided by 144.

That is it.

End of.

Never mind dividing by anything else, that would be wrong.

I must have explained this a gazillion times on this forum BTW

 

As I said read your first post again where you said :

 

"Mid Quarter Girth (in inches) squared, divided by four, times the length in feet, then divide by 144. "

 

It was you who first said (wrongly) divide by 4 which is only necessary when using a girth measurement rather than the quarter girth.

[tommer9]

Aah you are picking up on my syntax. I see now, i missed the brackets off the divide by four it, my bad- i was trying to explain to anyone that was dull enough not to be able to work it out that MQG was the girth divided by four then squared. Seems even that was too difficult. Sorry.

[miller-Ian]

Now if only there was an app for that

[njtimber]

buy a book called foresters companion by n d g james it will tell you all you need to know and lots of other interesting tree/forestry related things