I heard the sound of the HVAC duct creaking

My co-workers and I were installing HVAC duct in a commercial building downtown.

The commercial building was empty at the time, but someone purchased the building and they were fixing it up.

All of us were part of the construction crew. The HVAC duct was 40 years outdated and it needed to be upgraded. The owner of the commercial building also plans to upgrade the entire HVAC plan after the HVAC duct repairs were completed. My co-workers and I were working in the building all day on Monday. All of us had music playing on the stereo and it was hard to hear. I thought I heard the creaking sound of HVAC duct and I tried to warn our co-workers! Before I could get the words out of our mouth, the entire ceiling collapsed on top of myself and others and another lady. The pieces of metal and drywall covered the floor and there was dust everywhere. I should have gone to the emergency room after the accident. A piece of drywall fell right on top of our head and I had a pretty big bump. I had a headache most of the day, however one of our co-workers thought I might have a concussion, despite the fact that I continue to work the rest of the day, later that night I started to feel easily sick. I was throwing up and easily dizzy. At that time, I decided to go to the emergency room. It turns out that I legitimately was suffering from a concussion. I got three afternoons off work and a paid mini getaway. It’s been almost a month since the accident and I still have a bit of a headache when I wake up in the day.

commercial air conditioning system