03/28/96 Agenda & Packet - Laserfiche WebLink

Home Browse Search

,-r1JJlrlL"iti i ILA' yr JlJ1i-J rt../r-1 CIVL711VCZ..rtll t� . f�t--i ../.:_.. ,AtiERICA.N ENGINEERING ASTM Designation: D 2487 TESTING, INC. (Based on Unified Soil Classification System) Soil C.assification • Criteria for Assigning Group Symbols and Group Names Using Laboratory Tests' Group Group Name3 Symbol ;e-Grained Soils Gravels Clean Gravels Cu�4 and 15Cds3` GW Well graded gravel' than 50%retained on More than 50%coarse ..Less than 5% fines 200 sieve fraction retained on Cu-r4 and/or 1>Cc>3` GP Poorly graded graver' No.4 sieve Gravels with Fines Fines classify as ML or MH GM Silty gravee.Gm More than 12%fines= Fines classify as CL or CH - - GC Clayey gravel''0'M Sands Clean Sands Cu...+6 and 10 Cc53` SW Weil-grades sand' 50%or more of coarse Less than 5% fineso fraction passes No. Cusp and/or 1,-Cc,-34SP.---;' Poorly graded sand' — 4 sieve Sands with Fines Fines classify as ML or MN SM Silty sandd'N" More than 12%tines? Fines classify as CL or CH SC Clayey sande•~' rained Soils Silts and Clays inorganic PI>7 and plots on or above CL Lean clayKLA0 it more passes the Liquid limit less than 50 "A" lined' 200 sieve PI<4 or pats below "A" ML SiltiJl"' line' organic Liouid limit-oven deed<0.75 OL Organic clay M" Liquid limit-not dried Organic silt'-M 0 Silts and Clays inorganic PI plots on or above "A" line CH Fat clayK" Liquid limit 50 or more PI blots below"A"line MH Elastic silt'«'[" • organic Liouid limit-oven dned <0.75 OH Organic clayx'-'u P Liouid limit-not dried Organic silt`u-m.o uganic soils •Primarily organic matter.dam in color.and organic odor PT Peat :ea on the material passing me 3-in.(75'mml sieve. (O_jZ "It Atieroerg limns 0102 in natenea area.sod is a CL•ML. etc sample contained cobbles or boulders.or both.add -Cu . 0w/Oto Co . silly day. COWS or boulders,or both"to group name. 0, Qso Klt soil contains 15 to 29%plus No.200.add"with sand" ,vacs win 5 to 12%lines require dual symoois: 'If soil contaits.,-l5%sand.add-with sand":o group or"with gravel."wnicrever is predominant. N-GM well-graded graver with silt name. 11t sod containa730%plus no.200.predominantly sand. N-GC werl-graaeo gravel win day dtf fines dassity as CL-ML.use dual symool GO-GM.or add"sandy"to to group name. °-GM Poorly graded gravel with silt SC-SM. 'mit soli conntnsa O%plus No.200.predominantly °-GC peony graced graver with day "If fines are organic.add"with organic hoes"to group gravel.add"gravelly"to group name. rids with 5 to 12%fines remora dual symOois: name. "Pisa and pats on or above"A"line. NSM well-graded sand win sot 'It SOS contains>05%gravel.add"win graver"to groins dP4s4 or plots below"A"line. V-SC wNl-graced sand with day name. • 151 pats on or above"A"line. '-SM 000ny graded sand with silt Opt prod below"A"line. '-SC poorly graced sand with day . SIEVE ANALYSIS 60 y SCREEN-114 I sieve Na I For classification of fine-,rained soils 3 2,r, v, o zo w w ,.o z000 and rine-rained Traction or coarse-grained I H SO- sous. i ; I I I 1 1 a Equation of'A.-line \C'(i 'I z0 0 X Horizontal at PI-4 to LL-25.5.I = w then PI-0.73(LL-Z0) '^3/I ' ; ' Ibw-i6.. I I I I _ C a0-3{ a Z EOuation at'u'-line � I ; ;i I I I I 11 I �O WN. Vertical at LL=16 roPIa7 //' G e< r then PI.0.9(LL-3) / ll ! I I I I i I H Sa - / ' loo z IIo--zseva ! W / • •jso / 0 • t 0 a // 1 �e I MH oR OH I o..-o.ors D. 1I " ' I 1 I 1 1 i tido 10 i/ G so ia s ..0 3.s o.i0 7 MLoR OL PARTICLE SIZE IN MILLIMETERS 4�- //'.0 tR %// I I I Oo :1-47.-63-2°° C-1J�O -mR3_ a to iszo 30 .o so 60 70 30 90 loo no LIQUID LIMIT (LL)