A crew from Maxim Crane in Pittsburgh assembles a 500-ton crane Wednesday that will be used to replace air conditioning units on the roof of the Butler County Government Center. That work is part of a new $12 million county office building project.

A construction snafu will be corrected so the new Butler County office building won't be left all wet.

County Commissioner Bill McCarrier, board chairman, said the steel beams and metal sheets for the building's roof are flat instead of sloped to drain rainwater into the gutters.

McCarrier said the error at the South Washington Street site was caught after the fact.

“The decking already was in place,” he said.

County Commissioner Jim Eckstein said a subcontractor of general contractor Vendrick Construction of Brookfield, Ohio, did the work.

McCarrier explained the problem would be fixed by installing sloped insulation under the rooftop.

The change will cost the county roughly $50,000.

Eckstein has no problem with the fix, which includes attaching boards to the foam insulation before laying the rubber top.

“I'm absolutely satisfied,” he said. “It's fully adhered.”

McCarrier said the price would have been higher, but less insulation is being used on the government center and courthouse roofs than expected.

The nearly $12 million project covers building the four-level building, which will house county human services, installing new roofs to the government center and courthouse, and replacing three air conditioning units on top of the government center.

While the air conditioning units are replaced Friday, workers on the fourth and fifth floors of the government center temporarily will be relocated to the first floor for safety considerations.

Chief county clerk Amy Wilson said although 29 people would be displaced from the fifth floor, not all of them would need work space Friday due to commitments outside the building.

Two of the three county judges who have offices on the fourth floor are not in session.

Tom Holman, deputy court administrator, said the few hearings scheduled for the third judge would be moved to another floor.

Aside from judges, there are only five workers on the fourth floor. Holman said the respective judges would decide whether their staff would work downstairs or not be needed that day.

Signs will be posted warning visitors to not enter the top two floors. Sheriff Mike Slupe said deputies would be posted to ensure those levels remain clear.

McCarrier said the change to the new building's roof won't delay the project completion, which is set for August 2015.

The project cost was covered by the May sale of the Sunnyview Nursing and Rehabilitation Center in Butler Township to the Lakewood, N.J., firm Investment 360.