IBC Site Class Average Blow Count N Value
IBC Site Class Average Blow Count N Value
(OP)
Does anyone know the formula for averaging of the N value per the IBC Site Class Definition. I have the following boring log. Down at 2ft N=20, to 4ft N=25, to 6ft N=32, to 8ft N=42, hit solid rock at 9feet N=70. Any tips will be greatly appreciated.






RE: IBC Site Class Average Blow Count N Value
RE: IBC Site Class Average Blow Count N Value
RE: IBC Site Class Average Blow Count N Value
I have less than 10 feet of soil to bedrock. The Site Class is B and could be an A with additional shear wave testing . I have 91 feet of bedrock. Site Class D I don't think so.
RE: IBC Site Class Average Blow Count N Value
I agree you could go up in site class, but you have to prove it as N values won't do it above C.
RE: IBC Site Class Average Blow Count N Value