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I am trying to source 4’x4′ galvanized tube or stainless steel tube with a caliber/thickness of 1/4 or 3/16th. I can find the lesser quality option of 1.80mm thickness easily but nothing of better structural strength. What do people use for roof joists on very large buildings? (Our roof will end up being around 48 feet wide x 60 feet long (14.5 x 18 meters in size) supporting galvanized zinc / tin sheets. We can find black/ungalvanized steel easily but do not wish to use it here on the wet Caribbean side because of corrosion issues. Our engineer drew our plans for 4×6 galvainized but apparently it doesn’t exist in Costa Rica (nice job there then!). Does anyone have any suggestions? Or alternatives. What do the giant condo blocks in Guanacaste use as roof joist materials?
Not an authority on sources for materials in Costa Rica yet, but as an owner of a construction company in the Seattle area, architect and observer of CR construction practices, is there a source for steel bar joists? If so, there must be a galvinizing tank somewhere in the central valley so you could have them dipped or you can have the red iron tube steel dipped after you blast the corrosion off. Just a thought.
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