4029 W Georgine St & 1225 N West St - Plan (2)

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UNIFIED SOIL CLASSIFICATION S' Planning and Building Age UNIFIED SOIL CLASSIFICATION AND SYMBOL CHART COARSE -GRAINED SOILS (more than 50% of material is larger than No. 200 sieve size.) — - - -- Clean Gravels (Less than 5% fines) 11:0 iY714 GW Well -graded gravels, gravel -sand GRAVELS �_GP mixtures, little or no fines More than 50% Poorly -graded gravels, gravel -sand of coarse mixtures, little or no fines fraction larger Gravels with fines (More than 12% fines) than No. 4 _ ._ -- __..-. _ a sieve size t. ; GM Silty gravels, gravel -sand -silt mixtures GC Clayey gravels, gravel -send -clay mixtures Clean Sands (Less than 5%e fines) SW Well -graded sands, gravoily sands, j little or no fines SANDS — - — - --- 50% or more Sp Poorly graded sands, gravelly sands, of coarse little or no fines fraction smaller Sands with fines (More than 12% fin") than No. 4 _ _ _ sieve size SM Silty sands, sand -silt mixtures SC Clayey sands, sand -clay mixtures FINE-GRAINED SOILS (50%e or more of material is smaller than No. 200 sieve size.) Inorganic silts and very fine sands, rock ML flour, silty of clayey fine sands or clayey SILTS silts with slight plasticity AND ----- - CLAYS Inorganic clays of low to medium Liquid limit CL plasticity, gravelly clays, sandy clays, less than silty clays, lean clays 50% OL Organic silts and organic silty clays of low plasticity Inorganic silts micaceous or Iv1H diatomaceous fine sandy or silty soils SILTS elastic silts AND CLAYS CH Inorganic clays of high plasticity, fat Liquid limit clays 50% /oloo or greater OH Organic clays of medium to high plasticity, organic silts HIGHLY ORGANIC PT Peat and other highly organic soils SOILS LABORATORY CLAS ANC - D ---- MastelDlk: Cu = 6G greater than . 5f wween 1 and 3 GW D 1 o eb "D60 GP Not meeting all gradation requirements for GW GM Atterberg limits below line or P I less than 4 Above "A" line with P I between 4 and 7 are borderline cases GC Atterberg limits above "A" requiring use of dual symbols line with P I greater than 7 C u_ D60 greater than 4; Cr, = —D30 between 1 and 3 ' SW D 10 D10 x D60 SP Not meeting all gradation requirements for GW SM Atterberg limits below "A" Limits plotting in shaded zone line or P.I. less than 4 with P.I. between 4 and 7 are Atterberg limits above "A" borderline cases requiring use SC line with P.I. greater than 7 of dual symbols. Determine percentages of sand and gravel from grain -size curve, Dependinq on percentage of fines (fraction smaller than No. 200 sieve size) coarse -grained soils are classified as follows: Less than 5 percent ........ ........................... GW. GP, SW. SP More than 12 percent .................................. GM, GC, SM, SC 5 to 12 percent ................... Borderline cases requiring dual symbols PLASTICITY CHART liU at 50 'a 8 a0 CH ALINE' PI = _Z 30 0.73(1_-20) y CL MH&OH 20 10 0 10 20 30 40 50 60 70 80 Ti 100 LIQUID LIMIT (LL) (%) 1225 N West St Santa Ana Ca 92703 Soil Classification `A' PRIORITY ENGINEERING GROUP