Slah on Grade
Slah on Grade
(OP)
My reinforced concrete slab on grade is approx.
30 meters by 8 meters. Thickness is 150 mm.
Design bearing pressure is 120 KPa. The only
loads on my slab or spread foundation is the
own self weight (reinforced concrete) and some
fluids loads, as this foundation is being used
for containment of fluids. What do I need to
consider to design my slab/foundation? I know
I need to make sure that my actual bearing
pressure is less that the allowable, I need to
provide minimum reinforcement (temperature or
shrinkage) steel.
Do I need to design for moment? I would think
that my main mode of failure is settlement, or
more appropriately, uneven settlement? What
about failure in bending, though? How do I
check this? Top of concrete is approx. 150 mm above the top of grade. I am designing to AC 318.
30 meters by 8 meters. Thickness is 150 mm.
Design bearing pressure is 120 KPa. The only
loads on my slab or spread foundation is the
own self weight (reinforced concrete) and some
fluids loads, as this foundation is being used
for containment of fluids. What do I need to
consider to design my slab/foundation? I know
I need to make sure that my actual bearing
pressure is less that the allowable, I need to
provide minimum reinforcement (temperature or
shrinkage) steel.
Do I need to design for moment? I would think
that my main mode of failure is settlement, or
more appropriately, uneven settlement? What
about failure in bending, though? How do I
check this? Top of concrete is approx. 150 mm above the top of grade. I am designing to AC 318.






RE: Slah on Grade
RE: Slah on Grade
Mike McCann
McCann Engineering
RE: Slah on Grade
RE: Slah on Grade
RE: Slah on Grade
RE: Slah on Grade
Since, it is a contaiment slab, consider applying some type of penetrating sealer on the surface after completion. This will fill the cracks and will effectively seal the slab.