I have a 40 foot Rohn 25, with a tilt base section. It will be sitting next to a detached framed (not block) garage with siding. I can attach a winch to an extra guy bracket I have at the ten foot le
The tower will have its mass concentrated at the 20' level, and the 50 lbs 'at the top' will have its mass concentrated at the 40'+ level. if the 'hinge' is at ground level and your winch is at the 1
If I understand what you are saying, roughly (40x4)+(4x50) = 360 lbs That is actually less than I anticipated. Your concern about the wall, is however a shared one. Thinking an internal guy running a
Oops, make that 420lbs Sent from my iPhone _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://lists
Are you telling me the tower only weighs 40 pounds? If I understand what you are saying, roughly (40x4)+(4x50) = 360 lbs That is actually less than I anticipated. Your concern about the wall, is howe
40 per section = 160x2 = 320 50 x. 4 = 200 200 + 320 = 520 Sent from my iPhone _______________________________________________ _______________________________________________ TowerTalk mailing list T
Hey Gang, This isn't a snark answer - this is me trying to learn, I'm NOT an engineer (although some call me a 'software engineer' - bah) Where do those 2x and 4x numbers come from? I _ASSUME_ it is
This isn't a snark answer - this is me trying to learn, I'm NOT an engineer (although some call me a 'software engineer' - bah) Where do those 2x and 4x numbers come from? I _ASSUME_ it is standard
Thanks Jim, That makes 100% sense, was wondering where the "Magic" 2x and 4x came from, as I was expecting to see a COS in there somewhere, and moment arms (I know enough to know that) It is a case o
On 5/29/2019 10:27 AM, charlie@thegallos.com wrote: Thanks Jim, That makes 100% sense, was wondering where the "Magic" 2x and 4x came from, as I was expecting to see a COS in there somewhere, and mom
On 5/29/2019 10:27 AM, charlie@thegallos.com wrote: Thanks Jim, That makes 100% sense, was wondering where the "Magic" 2x and 4x came from, as I was expecting to see a COS in there somewhere, and mom
Assuming the math regarding the force that will be imposed upon the winch presented by others is correct, and it certainly seems logical so far, my 45+ years in the construction industry framing buil
Maximum force in the rope is 743 pounds. This is a "sum of the moments" problem. The tower won't start to move until the rotating force in foot-pounds about the hinge in the upward direction exceeds
The use of simple geometry and statics assumes the tower is perfectly rigid. It isn't. With the lifting point at 25% of height and 50 pounds cantilevered at the end, the tower will bend somewhat at l
So, first off, thanks everyone for the repliers. I intend to use a 3000 lb winch, and I did like the idea about sistering in some extra 2x4's. (I was already looking at doing that, and potentially cr
Dave, I loved the way you described that. What about if instead of 10' up you were say 20' up? Does that lower the weight on the rope or increase it and by how much? Guess I was incorrect in my expla
It has been a long time since I've had to solve a Statics and Dynamics problem. But I believe there are some missing elements in the analysis. For example. with the lifting point at 10 feet from the
The 520 pound result is correct. 73, Scott K9MA For example. with the lifting point at 10 feet from the fixed or pivoting end of the 40ft tower and a 50 lb load at the very end of the tower, 30 ft fr
For example. with the lifting point at 10 feet from the fixed or pivoting end of the 40ft tower and a 50 lb load at the very end of the tower, 30 ft from the lift point, simple physics says that you
A fishing scale and a yardstick and some masking tape is a good way to experiment with this. There's nothing like trying it. _______________________________________________ _________________________