hi all ... i need to mount a relatively light timelapse camera in housing on the top of a long pole over a construction site, straight up and down, flagpole style ... i probably have to go up 25 or 30 feet. the cam and housing is only 3 lbs or so ..
i've got lots of clamps etc to secure the cam to the pole, and to secure the pole at the base.
my question: any suggestions on the type of material or product or pipe or extrusion that i could use for my pole ? it's near a great lake, with some inevitable wind, so i want the best combo of rigidity, and (lack of) weight.
PVC pipe that length will sway unless you put wood strips inside it and tie it down with guy wires. I would try three lengths of EMT conduit, strapped together every 3 or 4 feet, the whole thing anchored to a cement block. All three tubes need not reach up to the very top: the top third only needs one tube, the second tube stops at the halfway point... look at the Sears Tower (AKA Willis Tower) for inspiration.
That arrangement would be pretty stiff but may still need guy wires depending on wind at the site. Another way to go is to scan craigslist for anybody wanting to have their old TV antenna tower removed... you could also ask around the local HAM radio groups and probably score a loaner mast.