Struct123ure
Structural
Hi,
I am working on a reshoring project and was wondering if I can take the SDL(Superimposed Dead Load)+LL(Live Load) as the slab capacity to calculate the number of floors that I need to reshore?
After looking at posts on this website such as and reviewing ACI 347.2R-13; I don't see them use the SDL/SID(Superimposed Dead) in their calculations. But most floors have 1kPa for partition allowance and on residential floors designed for 1.9kPa having 1+1.9=2.9kPa is a big difference from 1.9kPa.
Example:
Level 8 pour weighs 0.48+6+3.1=9.58kPa(Self Weight of Formwork+Conc.+Const_LL). And all the floors below are designed for 1.9kPa(no live load reductions). My preliminary calcs would be 9.58/1.9 = 5.04 interconnected slabs (1 level of shoring/Formwork and 4 levels of reshoring).
But the slab was designed for SDL=1kPa and LL=1.9kPa. Partitions, ceilings, flooring isn't going to be put up while there are re-shores everywhere.
So this means 9.58/(1+1.9)=3.3 ~4 interconnected slabs (1 level of shoring/Formwork and 3 levels of reshoring).
If it's not used, please let me know why or why you wouldn't personally do it this way?
I am working on a reshoring project and was wondering if I can take the SDL(Superimposed Dead Load)+LL(Live Load) as the slab capacity to calculate the number of floors that I need to reshore?
After looking at posts on this website such as and reviewing ACI 347.2R-13; I don't see them use the SDL/SID(Superimposed Dead) in their calculations. But most floors have 1kPa for partition allowance and on residential floors designed for 1.9kPa having 1+1.9=2.9kPa is a big difference from 1.9kPa.
Example:
Level 8 pour weighs 0.48+6+3.1=9.58kPa(Self Weight of Formwork+Conc.+Const_LL). And all the floors below are designed for 1.9kPa(no live load reductions). My preliminary calcs would be 9.58/1.9 = 5.04 interconnected slabs (1 level of shoring/Formwork and 4 levels of reshoring).
But the slab was designed for SDL=1kPa and LL=1.9kPa. Partitions, ceilings, flooring isn't going to be put up while there are re-shores everywhere.
So this means 9.58/(1+1.9)=3.3 ~4 interconnected slabs (1 level of shoring/Formwork and 3 levels of reshoring).
If it's not used, please let me know why or why you wouldn't personally do it this way?