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athlon2k2
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- TL;DR Summary
- I'm building an adjustable climbing wall based on a pulley system but need to figure out the forces involved to adequately reinforce the supports.
The construction of this climbing wall is all done with 2x6 boards and 3/4" plywood. With some base calculation I estimate the wall to weigh roughly 400 lbs. Assuming the max weight of a climber is 200lbs. That would put me at 600lbs. Since this wall is on a hinge the maximum weight at the top when the climbing wall is perpendicular to the floor would be half the weight (300lbs). I intend to use a pulley system with a pulley on each upper corner of the wall. So dividing the load by 2, I estimate each corner to weigh 150lbs.
Here is where it gets little tricky. When I look up some specs on pulleys they state that the force can be up to double the load. This means each pulley could have up to 300 lbs of force. If assuming that being perpendicular to the ground is worst case, then the angle of force on the pulley would be down and out at a 45 degree angle.
In the end this means each pulley would need to support 150lbs of downward force and 150lbs of outward force (away from the wall).
Can someone please valid this is the way to calculate this? Here are some pictures of the project and supporting data.
I have 152 linear feet of 2x6 studs and 3 sheets (4'x8') of 3/4" plywood
https://www.engineersedge.com/commercial_lumber_sizes.htm
http://theplywood.com/weight
Here is where it gets little tricky. When I look up some specs on pulleys they state that the force can be up to double the load. This means each pulley could have up to 300 lbs of force. If assuming that being perpendicular to the ground is worst case, then the angle of force on the pulley would be down and out at a 45 degree angle.
In the end this means each pulley would need to support 150lbs of downward force and 150lbs of outward force (away from the wall).
Can someone please valid this is the way to calculate this? Here are some pictures of the project and supporting data.
I have 152 linear feet of 2x6 studs and 3 sheets (4'x8') of 3/4" plywood
https://www.engineersedge.com/commercial_lumber_sizes.htm
http://theplywood.com/weight