My company is bidding on a big apartment complex job-replacing about 180 gas pack RTU's. Problem is the crane will not be able to access about 1/3 of them. Which means we would have to wheel them on a dolly over the roof, then lift them in to position.
Other problem is there are many gas lines and water lines running across the roof, plus the roof is not flat and has a slight pitch to it.
Anybody experience something like this before? Is there equipment out there that would help? Walk away, let the other guy go out of business?