Spent 4 hours tracking down a missing dimension on a commercial duct layout

Turns out the architect changed the ceiling height on revision 7 and nobody told the mechanical team, so my entire plenum space calculation was off by 8 inches, how often do you guys catch coordination errors between disciplines?

3 comments

3 Comments

hannahm391mo ago

Isn't that just how it goes... the right hand never knows what the left is doing anywhere.

williamm821mo ago

Caught a clash once where the structural beam and the ductwork were in a fight to the death. Turns out the structural drawings were based on the old ceiling height too, so I had to cut 6 inches out of my diffuser layout. Ever have to rework something you already signed off on?

sullivan.spencer1mo ago

Man, I had a buddy in commercial HVAC who told me he once had to scrap an entire duct layout because the architect updated the ceiling grid after he already got signoff. He said it was basically a full weekend of rework just to drop every branch by three inches. Took it as a lesson to always double check for late revisions before committing to fab.