Reinforced steel and concrete combined
Although wood is a preferred material in constructing earthquake-proof buildings, it would not stand a Tsunami since they are easily uprooted and can cause further damage to other buildings .
Location. If possible, edifices should be kept as far back from the shoreline as possible.
If the Building is closer to the shoreline or beach than Tsunamis can easily reach the building and put more force to it than the buildings away from the sea.
Elevation. A suspended floor which allows water to go under the building as well as around it will greatly reduce the force or effect of the tsunami.
The suspended floor will help even if water will escape into the building; For example the pressure plates can pull the water to go in the underground sink hole that is surrounding the building.
