Date: March 05, 2018 02:17AM
Steve Clayton Wrote:
> What do you find in the books about "ropes"? In
> my scenario the tow line is 5,500 ft long. On the
> Causeway I am using removable slings between each
> boat. After that, it is 4 ropes side by side. I
> have to give that more thought. Did they attach
> the 4 ropes, pull 125 ft up the face, free the
> skid and reverse 125ft. for another pull. A
> capstone would make quick work of that.
> I wonder??? So, it's not one continual rope. It's
> comprised of many sections..
I've put quite a bit of work into the ropes but unfortunately there just isn't a lot of data.
I'd guess their best ropes were about 80% as strong as hemp. They appear to have been slings of 100' lengths. They were probably tarred. There was no practical limit to the thickness. It appears the "cartouche" and 'tie of isis" were both types of belaying loops. "Proto-pulleys" were probably couplers used to allow stones to train.
I believe they could make pulleys that could handle a 5 1/2" rope so generally a single rope was used. There appears to have been a chain to transfer forces across the pyramid top.
Rope would have been one of the primary consumables in pyramid construction using up some 300 lbs per day. It's hard to estimate the amount of copper consumed but it >was certainly the most expensive commodity used followed by food.
After giving it more thought.
Reexamining Ori's turn style (for lack of a better term) works better than I first imagined. It has 4 cut groves. I have been concerned about knots, and the like, passing over an abrasive surface. If the ropes were attached to a larger wood or copper dowel, and re-intertwined after making a loop, then the dowel would take the brunt of the stress. The rope loops are smaller in size than the dowel's outer surface. No big knots.
I was running stress amounts for 2 and 2.5 inch ropes. 5.5" is to heavy for a small group of men to carry and replace. As the build increased they would have needed to switch to assembling 2 slings between each boat. Again, the ropes need to be carried. I don't see any tar. If it's more strength you desire, consider running the rope through a bath of hide glue. Hide glue can be diluted before application, and other soluble oils added for flexibility. It is a known fact, they had hide glue, as they used it to build their furniture. Additionally, treating the rope would impart water proofing. Hide glue has to be heated up, though after setting, it become water resistant. Guitar and violin manufactures still use hide glue today. I have worked with it.
Besides the hide, notice the eyelet loop in the two rope sections, upper right hand corner.