| The concept of a slab floor in Thailand is quite different from what it is in Australia (and possibly other western countries I would guess?)
In Australia a "slab" floor is supported by the fill underneath which is bedding sand over firm ground. In Thailand a slab floor is supported by piers with deep footings no more than 4 meters apart. The loose fill thrown in in this type of construction offers little, if any support for the slab floor. |