Son-in-law wanted to knock out a support beam in their living room to make it a bigger room.
2 story house.
Daughter called me over to look it over and see what I thought before demolition.
It was a long span and I told her to get a carpenter to look it over since I'm not an authority on that kind of project.
I told SIL (42yrs old) the wooden beam he got didn't look strong enough to hold the weight, but he said "But Bill the engineer at Lowe's said it would work"