Patio Garden Water Drainage

Question

I am working on a vegetable garden for a patio above my restaurant. It will be growing many vegetables and herbs, which will demand lots of water. One problem though, my landlord demands no water may touch the patio surface, due to concerns of leaking below. My plants have not been transplanted into their final containers yet, and I was hoping to design some sort of container or shelving unit that could collect all water that drains through the pots and funnel it to one central bucket, or various containers,   which would then be reused or dumped somewhere else. I’m not much of a carpenter and was hoping you may point me towards some resources that may help me figure this out.

Answer 1

This site may be helpful:
http://www.builditsolar.com/Projects/Water/Water.htm