post and pier vs slab

[DrWho]

the earthquake make more difference than the way you build. thats all im saying.

for fast shakes a house on piers will do better since it has the ability to sway.
fast shakes will crack the foundation on a slab house since there is no give.

for slow shakes a house on slabs will do better since a house on piers will sway MORE a fast shake and that will topple the house on piers. the slab keeps the house intact during slow shakes.


so either method is ok, nobody knows which will do better unless they know what earthquake will come...fast or slow.

the doc is in...