Date: April 03, 2018 05:26PM
Steve Clayton Wrote:
> Hi Thanos5150,
> Have you done your proposal in 3D?
No. I made a stick drawing which is about all I have the interest in investing my time at this point. I uploading it originally to Photobucket which changed so it got lost for a while, but here it is:
[update] Photo is gone now. Whoever is running Photobucket is an idiot. There site is unusable even just to view and they discontinued 3rd party hosting.
> You may find
> there is not enough room on the steps.
The steps of the "shaduf tower ramp" can be whatever is required.
> If you
> like, I will do this in Sketchup. I will need more
> info. Inverted incline? help of gravity along its
> greatest length of travel? Is this in reference to
> the Shaduf? Handed off to the GG?
If it interests you have at it. My point was to show alternatives to traditional ramp models. I make no claims whether it is right or wrong nor does it speak against any other idea.
> There is also timber load strength(s) to consider.
> On average, you are attempting to lift 5000 lbs. /
> 2.5 tons. The average mans weight is approx. 185
> to 200 lbs. Could a 20-30 ft. timber support 2.5
> tons on one end, and say 1.75 tons on the other
> end. They need not be equal, as the pole is an
> inverted lever. Additionally, the steps are only
> 2.5 to 3 ft. wide, once you start climbing. I also
> did a study on timber beams, and the results were
> not encouraging. I'm concerned it would bow the
> timber, past being of any use. How fast? 1 stone
> every 3 minutes. This would help determine how
> many shaduf would be needed. One for each step?
> >The use of counter weights on the shadufs, namely
> the people pulling the ropes to lift it. That
> would require 18 to 20 men. How do they all fit,
> on such narrow steps?
>>The lifting tower steps would be whatever width you needed them to be.
I saw the sketch. Was it here in this thread? I can't find it any more.