Grade Math help

[MossRoad]

Ooops 110 over 300....

Get a scientific calculator, because if you want to know the degree of the angle, you need to do trigonmetry.

RISE/RUN = %GRADE of slope.
ARCTAN(RISE/RUN) = DEGREE of slope

For your example:

110' RISE/300' RUN = 0.37 or 37% GRADE of slope.
ARCTAN(110' RISE/300' RUN) = 20.14 DEGREE of slope.

If you have a Windows based computer, there should be a scientific calculator built in. Go to START/AllPrograms/Accessories and launch the calculator. When the Calculator program opens up, pull down the view menu and choose SCIENTIFIC. Then enter your rise in feet divided by your run in feet and hit =. In your case, you will see 0.36666666..... multiply that by 100 to get your percent grade or select the INV check box and then push the TAN (for tangent) button to get your DEGREE of slope.

Hope that helps.

 

[Egon]

Moss; I think six figure tables and interpolation would work much better!

Builds character!

 

[MossRoad]

Moss; I think six figure tables and interpolation would work much better!

Builds character!

I had enough character building in high school!

 

[MrJimi]

Is there someone here that can help me with some numbers?
I have a skidsteer that lifts 1,750 pounds at the pins, how much will it lift 5 feet out, 10 feet out and up to 20 feet out. The reason I ask is because I don't know and I built a long boom pole in my gallery that extends out about 20 feet, I don't think it will be much but I'm curious. And my lift arms will raise 9.5 feet.




Thanks
Jim

 

[bbabineau]

Just real quick. One area that I am interested in mowing has a rise of 40ft every 100. It is not the steepest part of the property, but one that I need to clean up soon .. Is this a 25% grade? I looked around TBN and I know someone had posted the math, just can't seem to find it.

Carl

Woodlands,

Attached is a conversion chart that I posted sometime ago. Hope this helps.

Bob

 

[MossRoad]

Is there someone here that can help me with some numbers?
I have a skidsteer that lifts 1,750 pounds at the pins, how much will it lift 5 feet out, 10 feet out and up to 20 feet out. The reason I ask is because I don't know and I built a long boom pole in my gallery that extends out about 20 feet, I don't think it will be much but I'm curious. And my lift arms will raise 9.5 feet.




Thanks
Jim

Jim,
It all depends on how far back from the pins the lift cylinders are, how far behind that point the lift arms attach to the unit, how far in front or in back of the front wheels the center of gravity is, the weight of the machine with and without attachements and operator, etc... probably too many variables to guestimate.

I would put the boom out horizontally in front of the unit, add a measured amount of weight, get in the unit and see if it lifts it about 6 inches off the ground. Repeat as necessary to see what it takes to tip it. Be careful, etc... the usual safety disclaimer stuff. You know the drill. When you find what tips it at the end, then move halfway down the boom and add the weight again. It may take more than half, it may take less... who knows? The only way to find out without ALL of the variables and an engineering degree is with experimentation.

 

[woodlandfarms]

Woodlands,

Attached is a conversion chart that I posted sometime ago. Hope this helps.

Bob

Thanks for the chart! I think my property is less severe than I thought.

 

[J_J]

Is there someone here that can help me with some numbers?
I have a skidsteer that lifts 1,750 pounds at the pins, how much will it lift 5 feet out, 10 feet out and up to 20 feet out. The reason I ask is because I don't know and I built a long boom pole in my gallery that extends out about 20 feet, I don't think it will be much but I'm curious. And my lift arms will raise 9.5 feet.




Thanks
Jim

Hi Jim, This is what I came up with. If at three feet from the center line of the wheels, out to the lifting point of 1750 lbs, I came up with these figures.

If you can lift 1750 at three ft from the fulcrum, which is the center line of the wheels, then the following data will apply. I think. You can probably lift more, but the machine may tip forward. Do some test for yourself and check out the data. I am guessing at the three ft, could be more or less. If you can tell me exactly the distance from the center line of the wheels, to the advertised lifting point, I might can figure more precisely.


3 ft = 1750 lbs
6 ft = 875 lbs
9 ft = 583 lbs
12 ft = 437.5 lbs
15 ft = 350 lbs
18 ft = 291 lbs
21 ft = 250 lbs

If anyone any has better figures, please post.

 

[MrJimi]

J_J, thats better than I expected, Thanks for the info
I played some this past weekend and with the whole pole extended all the way, I could not raise the rear of skidsteer or bend pole in anyway, It seemed good and strong I weigh 170 pounds

Jim

 

[MossRoad]

It seemed good and strong I weigh 170 pounds

Jim

Shoulda put me on there!(rimshot, please)