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21st November 2020, 11:00 PM #1Most Valued Member
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Astronomical observatory roof roller steel u channel
A few years ago I recovered an astronomical observatory. It consisted of a 3 meter square wooden structure on on which a 3 three meter rotating steel dome stood. I have recently started rebuilding it and have laid the concrete slab, telescope pier foundation, and walls to ceiling height but to cut a long story short have decided to forego reassembling the dome and instead opt for a simpler and lighter roll off roof.
For the rolling mechanism I have some industrial stainless steel pallet rollers which I plan to use upside down rolling in a U shaped steel channel. The U channel steel would need to be 50 mm wide and 40 mm high and 2mm thick to accommodate the rollers.
I have been unable to find anyone who can supply U section of this dimension but I can get 50 x 50 x 2 square section. I would however have to cut off one side of the square tube to give me a height of 40mm.
My thoughts are to do this with an angle grinder with a metal cutting disc but because I would need to make two lengthwise cuts into 12 meters of square tube (24 meters of cut) it seems a daunting task and am wondering whether there is an easier option.
Open for any suggestions.
Geoff
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