Kim, here is the one I have two of
http://www.shelterlogic.com/sh... the first one I paid full price, over $300.00 the 2nd I got for the price you see as they're on clearance and being discontinued. It's 10' W x 13' L x 8' H. Here's another one for $105.00
http://www.shelterlogic.com/sh... but I'm not sure of the size or anything. If you can find out how deep the pipeline is then you should be able to still stake it down. I wouldn't think the pipeline would be very close to the surface would it?