The RPAC, located at 337 W. 17th Ave., opened in August 2005. OSU Recreational Sports is celebrating its centennial during October. Credit: Lantern file photo

The RPAC was one of the buildings affected by the power outage. Credit: Lantern file photo

Twenty-one campus buildings lost power on Friday around 11:30 a.m. By 6:35 p.m., all but one were operating normally.

Dan Hedman, spokesman for OSU’s Office of Administration and Planning, said that an incident during construction along 18th Avenue caused the power outage.

Buildings affected included the RPAC, University Hall and the Wilce Student Health Center.

Sixteen of the buildings were back on the grid as of 3:10 p.m., according to the website for the Department of Facilities Operations and Development.

An update from FOD’s website at 5:15 p.m. said that Bricker Hall, Denney Hall, Derby Hall and the 18th Avenue Library could be expected to have power by 7 p.m.; power was restored by 6:35 p.m, according to another update. The Math Tower is expected to have power by Saturday evening.

The McCorkle Aquatic Pavilion at the RPAC closed early Friday, OSU Recreational Sports said in a tweet. The power outage caused a swim meet being held there to be cancelled.

Hedman said workers were able to switch over the first 16 buildings to a different power source relatively quickly.

Hedman also added that he thought the communication after the power outage went smoothly.

“(Communicating) worked out very well,” he said, highlighting the tweets sent out and website updates as power was restored.

As a safety reminder, Hedman cautioned against elevators in affected buildings until power was fully restored.

Update, 6:53 p.m.: This story was updated to news that power had been restored to Bricker, Denney, and Derby halls, as well as the 18th Avenue Library.