durability of wood piles
durability of wood piles
(OP)
I have a project with miscellaneous fill (mostly fine silty sand) to 7-feet, peat to 10-feet, underlain by medium dense fine sand to about 18-feet where the sand becomes dense to very dense N=50 for 4 inches) . This sand was encountered to the maximum boring depth of 35-feet below grade.
Groundwater was encountered at 10' below grade.
The design is for a 30,000 sf warehouse w/ 28' precast concrete walls.
It seems logical that (timber) piles would be the way to go, however what is thier lifespan? I heard they are good for at least a hundred years, below groundwater, longer.
Can anyone confirm this?
My second question is regarding using a floating floor slab vs a structural slab. Does is seem logical to put the slab of grade beams, or just float it an tie it into the footing? My gut tells me to put it on grade beams to eliminate the risk of differential settlement.
Groundwater was encountered at 10' below grade.
The design is for a 30,000 sf warehouse w/ 28' precast concrete walls.
It seems logical that (timber) piles would be the way to go, however what is thier lifespan? I heard they are good for at least a hundred years, below groundwater, longer.
Can anyone confirm this?
My second question is regarding using a floating floor slab vs a structural slab. Does is seem logical to put the slab of grade beams, or just float it an tie it into the footing? My gut tells me to put it on grade beams to eliminate the risk of differential settlement.





RE: durability of wood piles
American Wood Preservers Association http://www.awpa.com/index.asp
Koppers Company http://www.koppers.com/htm/PandS_Util_Pilin.html
USDA Forest Products Lab ht
As for you other question, a monolithic floor would help tie the entire foundation system together. I would consider it preferable.
www.SlideRuleEra.net
RE: durability of wood piles
RE: durability of wood piles