Floor Slab for Pre-engineered Building
Floor Slab for Pre-engineered Building
(OP)
I am designing a foundation and floor slab for a 113'x80' pre-engineered metal building. The geotech report recommends 24" drilled piers and grade beams for the column loads and perimeter walls, but use a structurally isolated slab on grade.
This building has two garage bays and the floor slab will be receiving heavy truck traffic (36K axle load).
Normally, I use a turned down slab with the slab poured monolithic with the turn down. But this is my first pre-engineered building using deep foundations. With needing the grade beams between the drilled piers, does anyone have any thoughts on how to do the slab to prevent settlement from the truck loads, but still be isolated from the grade beams? Thanks.
This building has two garage bays and the floor slab will be receiving heavy truck traffic (36K axle load).
Normally, I use a turned down slab with the slab poured monolithic with the turn down. But this is my first pre-engineered building using deep foundations. With needing the grade beams between the drilled piers, does anyone have any thoughts on how to do the slab to prevent settlement from the truck loads, but still be isolated from the grade beams? Thanks.





RE: Floor Slab for Pre-engineered Building
I realize you haven't provided much info on the geotechnical conditions, but based on your given info, I would re-think this one.
RE: Floor Slab for Pre-engineered Building
As Ron says, I'd go either Mat footing or pile the slab too.
Mike McCann
MMC Engineering
RE: Floor Slab for Pre-engineered Building
Max. column load is 60 kips. All are exterior columns, no interior columns.
Sounds like you are saying to pretty much do it as I have in the past.
RE: Floor Slab for Pre-engineered Building