Kansas University maintenance workers began drilling holes Monday morning in the slab underneath Wescoe Hall in an attempt to determine why the humanities building's interior has cracked walls, sloping floors and drooping ceiling tiles.
Workers are using a diamond-tipped core drill to cut 6-inch holes in the slab, said Bob Porter, associate director of plant maintenance.
Six to 10 holes will be cut this week in southeast first floor hallway floors, he said.
After the holes are cut, soil samples will be taken from underneath the slab and analyzed.
Jim Modig, director of facilities planning, said he expects reports from the geologist and structural engineer to be completed in three to four weeks.
Last month a consulting engineer determined Wescoe Hall was safe to occupy, even though the floor slab apparently has been moving for years.
University officials suspect saturated clay fill beneath Wescoe is causing the slab's southeast corner to rise, and consequently free-standing interior walls and ceilings are shifting.
They decided to wait until spring break, when Wescoe Hall and the rest of KU is relatively deserted, to begin drilling.