When to consider Main Floor Dead Load
When to consider Main Floor Dead Load
(OP)
I know there are many ways to design foundations although the client is leaning towards this one. It is a two story residential building. He is looking for a thickened slab design with screw piles. I currently have the screw piles embedded in the concrete thickening at approximately 8'-0" spacing.
My question is whether I need to consider the concrete slab as a dead load on my piles. Normally main floor is not accounted for as there is a joint separating the concrete slab to the pile/gradebeam, although in this case they are well tied together. My initial instinct was yes I would need to consider the dead load although after further looking into it I'm second guessing.
I would say that the piles would tend to settle more since there would be significantly more load on them. If this were the case then the concrete slab would only reduce the loading on the piles although this may not always be the case. If there were to be settlement of the slab right after pouring the slab there may be settlement from the weight of the concrete alone.
It worthy to note that the slab were to be held in place by the piles while the soil underneath settled then the slab would not be able to handle the loading and would fail. (Slab on grade only and not structural slab).
Let me know your thoughts. Much Thanks
My question is whether I need to consider the concrete slab as a dead load on my piles. Normally main floor is not accounted for as there is a joint separating the concrete slab to the pile/gradebeam, although in this case they are well tied together. My initial instinct was yes I would need to consider the dead load although after further looking into it I'm second guessing.
I would say that the piles would tend to settle more since there would be significantly more load on them. If this were the case then the concrete slab would only reduce the loading on the piles although this may not always be the case. If there were to be settlement of the slab right after pouring the slab there may be settlement from the weight of the concrete alone.
It worthy to note that the slab were to be held in place by the piles while the soil underneath settled then the slab would not be able to handle the loading and would fail. (Slab on grade only and not structural slab).
Let me know your thoughts. Much Thanks






RE: When to consider Main Floor Dead Load
RE: When to consider Main Floor Dead Load
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: When to consider Main Floor Dead Load
RE: When to consider Main Floor Dead Load