How does LEED define a bicycle space?

LEED does not prescribe the type of bicycle rack that should be used or the spacing between them. LEED only prescribes that bicycle storage/racks be secure and within 200 yards of the building entrance. In my mind, neither wheel bender or crowd control bicycle racks can be defined as secure. These types of racks only allow a user to secure their wheel to the rack, which makes it very easy for someone to steal the bike. I would also highly discourage the use of "wave" racks. As for the "20 openings" in the crowd control style rack - no way/no how would you be able to fit 20 bikes in a 10 ft space and you would not be able to count each opening as a rack. The manufacturer usually states how many bikes will fit on a certain rack. Generally, depending on the type of rack you use, they can be spaced 2' O.C. and accommodate 2 bikes each (using a U rack). David Baker has a great info page about bike parking if you want to learn more (http://www.dbarchitect.com/words/writings/72/HOW%20TO%3A%20Bicycle%20Parking.html). As someone who commutes by bike daily, I would never lock my bike to either type of rack. Although LEED isn't specific regarding the type of rack you can use, I think you will want to decide whether your approach would meet the intent of the credit, which is to encourage alternative transportation (bikes) and reduce the impacts from auto use. Without providing safe, secure and convenient bike storage, I doubt you would really encourage people to arrive by bike. You might meet the "requirements," but you wouldn't really meet the intent.

Rick, I'm not sure I'd want to hold my breath waiting for a CIR or addendum on that level of detail! As much as it might help you answer the clients question easily, the downside of that level of detail would be such a prescriptive and complex rating system that would be even harder to use. I don't know of any ASTM standard for bike racks, so we'll have to use our professional judgement of how many bikes can reasonably fit on a rack.