Because soil boring and sample testing are relatively expensive for determining how deep drilled piers should be, contractors sometimes drill a test hole as a cheap alternative. The correct depth is estimated by simply noting the type of soil coming up as a function of drilling depth.
Is this...
What is a good, basic resource for designing belled-pier and pile systems to support the slab foundations of residential and small commercial structures? Have reviewed IBC & IRC but always appreciate examples. Any on-line tutorials? Anything otherwise easy to access when not near an...
