Pittsburgh EMS, Fire, and Police responded to a 9-1-1 call for an injured male at the 3000 block of Smallman Street around 10:45 a.m.
When first responders arrived, they were directed to a male who fell about 20-feet off a ladder. The injured contruction worker was conscious and alert.
A second male was assisted off the roof.
Medic 6 transported the victim to Mercy Hospital in serious but stable condition.