02-12-2008, 06:36 PM
It all depends on how the house is built.
The way post and pier houses are built today, there is generally the concrete foundation blocks, metal Simpson ties to the 4" x 4" posts, up to solid sawn 4" by XX beams (assume metal ties between each piece of lumber) then 2" x XX floor joists then 3/4" thick T & G plywood sub floor. On top of that is the flooring of your choice.
The way the houses used to be built (early 70's up to the late 80's), it was a big concrete block, a small concrete block, a termite pan, posts, beams, floor joists and either T & G plank flooring or the 3/4" T & G subflooring.
Prior to that, it was flat rocks, posts, a beam, some joists (and they may have been 2"x 4" FLOOR JOISTS!!) and then 1" thick T & G flooring. That seems to have been common from about 1850 to about 1920. From 1920 to the 50's rocks for foundations were much less common.
That's just from what I've observed, so these numbers are not tight or possibly even valid. This is just from what I've seen on this island, Oahu and a few bits of Maui and Molokai.
The way post and pier houses are built today, there is generally the concrete foundation blocks, metal Simpson ties to the 4" x 4" posts, up to solid sawn 4" by XX beams (assume metal ties between each piece of lumber) then 2" x XX floor joists then 3/4" thick T & G plywood sub floor. On top of that is the flooring of your choice.
The way the houses used to be built (early 70's up to the late 80's), it was a big concrete block, a small concrete block, a termite pan, posts, beams, floor joists and either T & G plank flooring or the 3/4" T & G subflooring.
Prior to that, it was flat rocks, posts, a beam, some joists (and they may have been 2"x 4" FLOOR JOISTS!!) and then 1" thick T & G flooring. That seems to have been common from about 1850 to about 1920. From 1920 to the 50's rocks for foundations were much less common.
That's just from what I've observed, so these numbers are not tight or possibly even valid. This is just from what I've seen on this island, Oahu and a few bits of Maui and Molokai.
Kurt Wilson