Mass concrete foundation

[DaveHolder]

Hi lads,

I was wondering if there is anyone could provide me with worked example for designing mass concrete foundation. I believe the weight of the concrete must be sufficient to take either compression or the uplift load.
Moreover, Do I still need to check the foundation against sliding?
Something else I’m not sure about is providing mech reinforcement to the bottom of the mass concrete.

Thanks

 

[BAretired]

I was wondering if there is anyone could provide me with worked example for designing mass concrete foundation. I believe the weight of the concrete must be sufficient to take either compression or the uplift load.

No worked example available. More detail is required, but it sounds like a question of using engineering judgment. Not sure how the weight of concrete would take compression. The weight has to be adequate to resist the uplift force with a suitable factor of safety unless you have other ground anchors such as piles.

Moreover, Do I still need to check the foundation against sliding?

Of course you do unless you want it wandering off under lateral forces.

Something else I’m not sure about is providing mech reinforcement to the bottom of the mass concrete.

I'm assuming you mean mesh reinforcement. For mass concrete, I would not use mesh unless it was a very heavy mesh. Probably 15M @ 300 o/c bars would be appropriate, but it depends on the shape and size of the mass concrete.


BA