"Idiots With Chain Saws"

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I was going to ask, but didn't want to appear nerdy, how do you calculate the weight of a tree? Per foot x diameter? Is one tree species heavier than another?
Green wood weight varys between 35 and 65 lbs per cubic foot. Density is directly related. Most people use 50 as a rough estimate. Im sure you are smart enough to figure volume of a cylinder, cone or parabula to determine weight of the trunk of the tree. The weight of the crown and foliage is a lot more variable
 
Volume of a cylinder:

V = πr2h

And that's r squared, not r2. So using Americano imperial measurements, for a tree bough 18" in diameter by 15 feet high, we'd have a volume of:

3.14 x (0.75) x (0.75) x 15 = 26.5 cubic foot

Times by the stated approximate density of 50lb/cu ft

26.5 * 50 = 1325 lb

Pretty heavy, to fall on yer roof, yer f**king redneck! Tomorrow, we'll apply the laws of motion to determine the amount of energy transferred to the roof of a house after falling 25 feet. Right, I'm off to get laid.
 
I do think TNT Sexy Toes is onto something big here. I see a book deal with that title. "Idiots with Chainsaws" has a nice ring to it. No doubt it could be parlayed into an epic film with the same title. Can envision several famous actors starring as the main boob. Too bad Robin Williams departed this dimension. Kramer would be an easy choice, with kramer (2).jpg George-costanza (2).jpg in a supporting role. Can't see how it could miss, quite honestly. No one gets out alive.


Buffalo Bill would play the OR doctor responsible for reattaching the limbs that didn't survive the expedition. buffalobill.jpeg
 
Volume of a cylinder:

V = πr2h

And that's r squared, not r2. So using Americano imperial measurements, for a tree bough 18" in diameter by 15 feet high, we'd have a volume of:

3.14 x (0.75) x (0.75) x 15 = 26.5 cubic foot

Times by the stated approximate density of 50lb/cu ft

26.5 * 50 = 1325 lb

Pretty heavy, to fall on yer roof, yer f**king redneck! Tomorrow, we'll apply the laws of motion to determine the amount of energy transferred to the roof of a house after falling 25 feet. Right, I'm off to get laid.
Combining letters and numbers = Stupid equations :confused:

I get the same solution by:
18 x 15 divided by 10 = 27 x 50 = 1350 :D
 
Is my method wrong? Just a lucky fluke?
Hold onto yer hat, TNT, let's see..

What about a tree 22" x 19'? I get 2090. What do you get using your funky equation?
  1. Convert first in same units. Let's just feet as Mr. B. C. Wetcoast, used lb/cu ft for the density in #26 .
    Ok, 22" as feet, well we have 22/12 (remember 12" per 1'). So we have 1.833 feet as our diameter.

  2. Now let's use our nice (not stupid, thank you Twinkle) little equation.

    gif.latex


    Volume is PI times radius squared times height

  3. Oh but, we had 1.833' as diameter, we need to half that for the radius, i.e. radius = 0.917', and now into the above Volume equation:

    (using 3.14 as PI)

    V = 3.14 x 0.917 x 0.917 x 19 = 50.13 cubic feet.

  4. Now timesing that by our suggested 50 lb/cu ft density figure:

    Weight = Volume x Density = 50 * 50 = 2500 lb
So, that's what I make it. Well, better run. Toddle pip!
 
Hold onto yer hat, TNT, let's see..


  1. Convert first in same units. Let's just feet as Mr. B. C. Wetcoast, used lb/cu ft for the density in #26 .
    Ok, 22" as feet, well we have 22/12 (remember 12" per 1'). So we have 1.833 feet as our diameter.

  2. Now let's use our nice (not stupid, thank you Twinkle) little equation.

    gif.latex


    Volume is PI times radius squared times height

  3. Oh but, we had 1.833' as diameter, we need to half that for the radius, i.e. radius = 0.917', and now into the above Volume equation:

    (using 3.14 as PI)

    V = 3.14 x 0.917 x 0.917 x 19 = 50.13 cubic feet.

  4. Now timesing that by our suggested 50 lb/cu ft density figure:

    Weight = Volume x Density = 50 * 50 = 2500 lb
So, that's what I make it. Well, better run. Toddle pip!
Incorrect, The answer is 2090. You get a great big F.
:popcorn2:
 

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