Not sure where to post this, but I saw this on Bogley.com and I built one for my kids bikes to store their bikes during the spring summer fall.
for $15 in PVC and cement, you can have a pretty good bike rack. I cracked one of the T, when I was finishing up, but everything was dry and I would have to start all over. But, I did not read the directions and I did not alternate the 3 1/16" and the 3 3/4". So, it make a good rack. I think I spent probably 2 - 3 hours of time. making. To the mods, if this goes somewhere else you can move it.