Live Floor Load

I am being pressed into a quick evaluation from my machine build dept. As part of facilities, I guess it has become my job to determine live loads for new equipment.

I have an above grade concrete 5" slb with rerod reinforcement supported with 13" h by 6" w concrete precast columns running the full width (22 ft) every 24" OC. It is suspended the 22ft over 12" poured concrete walls which make up the storm shelter of our manufacturing facility.

Is there anyplace/person or site where I could get an idea of what live loads this floor could handle. Or if someone could assist me in determining an effective calculation for equipment loads? Estimated 12,000# hydraulic press (none impacting), placed 48" unto slab in question.

Unfortunately, this was thrust onto my desk this morning, and I have to come up with an OK by this afternoon. I have tried to contact a few contractors in my area, but they are busy with new construction, I will also check with the city to see if any drawing of our facility give these loads.

"100% of the shots you don't take don't go in."
--Wayne Gretzky