I am building a kitchen rail for hanging utensils and frypans along the wall and need some help choosing the right tube size for the job.
Because I'm renting the place I don't want to drill any holes, so the rail must be one long piece of tube lying on two support legs.
Rail length needed is 2.5 meters or 103 inches.
There are few sizes of alloy square tubes I can easily get in Sydney are:
- 20mm x 3mm - 0.787" x 0.118"
- 25mm x 3mm - 0.984" x 0.118"
- 25.4 x 1.2mm - 1" x 0.047"
(I grew up in the metric world and did all conversions to inches in google calc, sorry if the numbers look awkward)
I think overall I'll be hanging 5-8kg or 10-18 pounds of stuff, distributed mostly along one half of the rail.
What formulas should I use to calculate the size of the tube needed, or the maximum weight a particular tube can support?
Would circular tubes be stronger in this application? If yes, what are the formulas for circular tubes?