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How so TF?
Try to use engineering terms and logic please?
jomoco
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I was hoping it would not come to this but here ya go.
If your hatred for dynamic cabling is merited, in your opinon, then it should be across the board. You state that the systems do not hold up and are subject to outside forces,weather, sun, vermin, etc. You continue to state that a dynamic system will girdle a tree, killing it. And your biggest argument is the liability in court.
Ok, good points. But this is why in your own tread you lose your argument.
You are designing a system to hold plants suspended by a tree. You are reverse engineering a cabling system by using weights to increase reaction wood. This goal does nothing to counter your argument between metal versus synthetic.
THIS IS WHERE YOUR LOGIC IS NOT SOUND.
Your whole system will fail due to environmental stress placed on the synthetics that you are buliding it with. That is right, YOU ARE USING SYNTHETIC MATERIALS TO BUILD YOUR WEIGHT BEARING SYSTEM.
This places you in a liability situation using products outside their scope of design.
You are using an expanding loop of synthetic rope to anchor your pulleys (That is what COBRA does). This is subject to weather, vermin, UV. You should be using through bolts with a captive eye for safety. Grade 8.
You are hanging plants by the irrigation lines that are not designed for above ground use and being in a constant state of tension. What is the elongation stress effect when incorporated with weather, heating/cooling, UV, etc. You should be using wire rope rated for the job.
Shall I go on.
You are using a synthetic line to anchor the plant to irrigation line. What is the UV hour rating of the line that you are using to suspend the plant, how well does that line withstand weather, What will be the effect of the line on the irrigation anchor, and at what point does slipage occur due to the expansion and contraction of the irrigation line during the watering cycle.
Are you notifying the client of the monthly inspection cycle and after all major weather events to see if this untested system will be safe. What is the life of the system. Or do we just guess when the brain bombs start falling on the grandkids.
If you listening to your own posts, AND AGREE WITH THEM, in no way would you be designing a suspension system using synthetic lines. This is where you disprove your own argument about using Cobra.