Foundation Engineering Spring 2008 Tripartite soil classification chart Clay Clay,percent Sand 0 6 Sult percent Keywords:percent,clay,sand,silt,particle size British Standard Code of Practice for Soil Investigations(CP 2001) 3.Colour ssured,laminaled ele 4.Dorlicle size 5.Geological formalion fisred bon doy (londn cloy Loose yellou hne sand (Allunium 5. gagc9sg2agterpomcoeaoncaonencgcoupartcestal
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Foundation Engineering Spring 2008 Rock description(CP 2001) Colaur 2.Grain sixe(g jor roek hStructure lonaled,folaled 5.Stole of wealhering 6.Rock name 8.Other preperlies go Red-brown,coorse g 5 6 Keywords:colour,grain size,texture,structure,state of weathering,rock name, strength, Darcy's law Flow Darcy's law Hydraulic Q gradient Keywords:coefficient of permeability,hydraulic gradient,flow, 22
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Foundation Engineering Spring 2008 Permeameter for determination of laboratory permeability slandpipe Area A Darcy'law 2·一 品 Keywords:standpipe,Darcy's law Pumping test for determination of field permeability G Pumping lest Infiltralion lest Keywords:permeability,piezometer,infiltration test
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Foundation Engineering Spring 2008 Permeability of soils k cm/s 02 Constant 0 5 8 10 tion test test,permea test,constant head,falling Flow net determination Flow line 4949"6号 4h“43"45 92△9-m49 H·na2 Keywords:flow line,equipotential line
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Foundation Engineering Spring 2008 Effective stress concept ' u兴r是 D.P'+U ·4 T-T+4 Keywords:effective stress,pore water pressure,total stres Seepage pressure(negative pore water pressure) 1 ag'--ou-bpo Keywords:effective stress,seepage pressure,total stress 25
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