A soil investigation in an old landfill indicates 30cm of cover, SPT blow counts to -4.5m range from 1 to 8 except one boring where N=50 at -3.0. At elevation-4.5, approximately 60cm of topsoil and organic material was encountered, and begining at elevation -5 blow counts ranged from 12 to 18 to elevation -9.5. This soil was a silty stiff grey clay with traces of sand and gravel. At elevation -9.5, the soil becomes a medium dense sand with blow counts ranging from 25 to 35. At elevation -15, this soil becomes very dense and the blow counts range from 40 to 45. Boring is terminated at -19.5. The GWT is at elevation -10.5. A one storey store building of 2930m^2 is proposed for this site. Draw the typical boring log and write a self recommendations for foundations
A soil investigation in an old landfill indicates 30cm of cover, SPT blow counts to -4.5m range from 1 to 8 except one boring where N=50 at -3.0. At elevation-4.5, approximately 60cm of topsoil and organic material was encountered, and begining at elevation -5 blow counts ranged from 12 to 18 to elevation -9.5. This soil was a silty stiff grey clay with traces of sand and gravel. At elevation -9.5, the soil becomes a medium dense sand with blow counts ranging from 25 to 35. At elevation -15, this soil becomes very dense and the blow counts range from 40 to 45. Boring is terminated at -19.5. The GWT is at elevation -10.5. A one storey store building of 2930m^2 is proposed for this site. Draw the typical boring log and write a self recommendations for foundations.
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