I was always taught to never pinch a slab with structure that is carrying load from above.
The reason being that the column or wall would be separated from its bearing support by something that was not designed to be "in the way".
In addition, I have seen slabs sag out as a result of poor compaction, slab construction problems and water leaks below slabs.
When the slab sagged, it acted like a crow bar and sent distress through the entire house in the area of the column. I have seen
this more than once.
When I point this out to other engineers and builders, they look at me like I am crazy. I tell them, "This is not something I read in a book. I have seen it"
They squirm a little and re-evaluate their years of slab pinching projects and experience.
I just want other's take on this common construction "issue" which seems pretty clear cut to me, but is apparently "way over the top" to a lot of
guys I'm meeting in the industry.
The slab I'm speaking about is a typical residential, 4"thick, WWF reinforced, fancy floor covering. It is not designed to span anomalies and is not reinforced
with bar. It simply separates people's feet from the gravel and dirt below.
The reason being that the column or wall would be separated from its bearing support by something that was not designed to be "in the way".
In addition, I have seen slabs sag out as a result of poor compaction, slab construction problems and water leaks below slabs.
When the slab sagged, it acted like a crow bar and sent distress through the entire house in the area of the column. I have seen
this more than once.
When I point this out to other engineers and builders, they look at me like I am crazy. I tell them, "This is not something I read in a book. I have seen it"
They squirm a little and re-evaluate their years of slab pinching projects and experience.
I just want other's take on this common construction "issue" which seems pretty clear cut to me, but is apparently "way over the top" to a lot of
guys I'm meeting in the industry.
The slab I'm speaking about is a typical residential, 4"thick, WWF reinforced, fancy floor covering. It is not designed to span anomalies and is not reinforced
with bar. It simply separates people's feet from the gravel and dirt below.
