I left my community garden about 13 years ago, but here goes.
1. One of many gardens run by Portland Community Gardens, which was red-haired stepchild of Parks and Recreation.
2. Yes, two spigots, so each garden was within 50' or so of one.
3. 400 sq.ft. per plot.
4. 27 plots, plus an empty plot for the picnic table, tool shed, and wood chip pile. The layout was 4 plots x 7 plots in a rectangle.
5. Yes, but it wouldn't keep out the determined. 4' tall chain link.
6. No. I peed behind the raspberry patch toward the back when nobody was looking.
7. On the street.
8. Not particularly.
9. Yes, one of each. The shed was 4x8, with a 12:12 roof, peak running the short axis, 3' at eave, 6' at peak. It contained a variety of cast-off and donated tools and often needed to be tidied up. People would often leave spare seed/plant material either in the shed or on/under the picnic table. The Shed had a bulletin board on the back. We'd get wood chips from the tree trimmers at parks and recreation, and usually had a good pile of them, available for covering and smoothing pathways.