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GRAIN SLZE Munsell Color DESCRIPTION SIEVE GRAIN APPROXIMATE NAME I SIZE SIZE SIZE Red Boulders >12 in.(304.8 mm.) >121n.(304.8 mm.) Larger than basketball-sized Yellow Red Cobbles 3-12 in.(76.2-304.8 mm. 3-12 in.(76.2-304.8 mm.) Fist-sized to basketball-sized Yellow Doane 3/4-3 in.(19.76.2 mm.) 3/4-3 in.(19.78.2 mm.) Thumb-sized to fist-sized Green Yellow Gravel few #4.3/4 in.(#4-19 mm.) 0.19-0.75 In.(4.8-19 mm.) Pea-sized to thumb-sized Green versa #10-#4 0.079-0.19 in. 2-4.9 mm. Rock salt-sized to pea-sized O Blue Green Sand medium #40-#10 0.017-0.079 In.(0.43-2 mm.) Sugar-sized to rock salt-sized O Blue fires #200-#70 .0029-0.017 In,(0.07-0.43 mm) Flour-sized to sugar-sized a Pte Blue Files Passing#200 <0.0029 in.(-0,07 mm.) Flour-sized and smaller Pu Ie Red Pu Ie ANGULARITY DESCRIPTION CRITERIA Angular Particles have sharp edges and relatively plane n iehed surfaces Subangular ilthk mar to angular description but have rounded edges _ Subroundad Particles have neany plane sides but have O O O wal4roundad corners antl ed as Rounded Pr6des have smoothly curved sides and no edges Rounded Subrounded Suban ular Angular ELW31GW MOISTURE CONTENT DESCRIPTION LL FIELD TEST DESCRIPTIONi FIELD TEST A 1/8-in.(3 mm.)thread cannot be rolled at D Absence of moisturedusty,d to the touch ROR-Pltta#o NP an wafer content. Moist Oem but no vislbie water The thread can barely be rolled and the lump L"tL) <30 or thread cannot be farmed when drlerthan Ne Wel Visible free water,usually soil is below walertabl Z plastic lima. g The thread Is easy to roll and not much time a Is required to reach the plastic limit REACTION WITH HYDROCHLORIC ACID of Madfum(fA) 30-50 The thread cannot be rerolled after reaching w the plastic limit. The turn or thread crumbles DESCRIPTION FIELD TEST when drier than the plastic limit None No visible reaction If takes considerable time rolling and kneading Weak Some reaction,with bubbles forming slowly t0 reach the plastic limit The thread can be H10(iM >30 rerolled several times after reaching the plastic Strong Violent reaction,with bubbles forming immediately o limit The lump or thread can be formed without w crumbling when drier than the plastic limit ro w $ APPANiMT I er.ATIVE DENSITY-COARSE-GRAINED SOIL CONSISTENCY-FINE-GRAINED SOIL APPARENT MODIFIED CA CALIFORNIA RELATIVE UNCONFINED m DENSITY SPT-N® SAMPLER SAMPLER DENSITY CONSISTENCY STRENGTHCOMPRESOSuVE CRITERIA tp tEbkms/fi) (#blows/N (#bimvsm) I (%) Very Loose y <4 <5 0-15 Very Soft <1000 Thumb will penetrate soil more than 1 in.(25 mm.) w Soft 1000-2000 Thumb will penetrate soil about 1 in. 25 mm. Looe 4-10 5-12 5-15 15-35 of Medium 10-30 12-35 75-40 35-83 Firm 2000-4000 Thumb will indent soil about 1/4-in.IS mm.) OsensiDense 30-50 35-60 40-70 65-85 Hard 4000-8000 Thumb will not indent soil but readily indented with thumbna l F� Very Dense >50 >80 -70 85-100 Very Hard >8000 Thumbnail will not Indent soil ? NOTE:AFTER TERZAGHI AND PECK,1948 01 3TRl1CTUR£ CEMENTATION DESCRIPTION CRITERIA DESCRIPTION FIELD TEST w Alternating layers of varying material or color with layers Crumbles or breaks with handling or slight StabfiedWeakly finger pressure at least 1/4-In,Nick note thickness Laminated Alternating layers of varying material or colorwith the layer Moderately Crumbles or breaks with considerable less than 1/4-in.thick Oeratey note thickness finger pressure Fissvod Breaks along definite planes of fracture with line resistance Strongly Will not crumble or break with finger pressure to fracturing 3 Slickensided Fracture planes appear polished or glossy,sometimes striated Block Cohesive soil that can be broken down Into small angular E Y lumps which resist further breakdown Lensed Inclusion of small pockets of different soils,such as small lenses of sand scattered through a mesa of clay;note thickness Homogeneous Same color and appearance throughout fn 3� \ PROJECT NO.; 133385.4SOIL DESCRIPTION KEY PLATE DRAWN BY: G.G. ryrKL lNFELDJER CHECKED BY: D.H. BENJAMIN HOLT DRIVE A-2 J u, Bright People.Right Solution. DATE: 4/17013 IMPROVEMENT PROJECT GETTYSBURG PLACE TO PACIFIC AVENUE �"'� REVISED: STOCKTON,CALIFORNIA