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SACRAMENTO FREMONT MODESTO <br /> 3628 Madison Ave, Ste. 22 46716 Fremont Blvd 4230 Kiernan Ave, Ste. 15 <br /> Sacramento, CA 95660 Fremont, CA 94538 Modesto, CA 95356 <br /> Ph: (916) 331-6030 Ph: (510) 573-6362 Ph: (209) 543-1799 <br /> �l\i r���- <br /> Fax: (916) 331-6037 info@ctecal.com Fax: (209) 543-1775 <br /> DEFINITION OF TERMS <br /> PRIMARY DIVISIONS SYMBOLS SECONDARY DIVISIONS <br /> GRAVELS CLEAN GW WELL GRADED GRAVELS,GRAVEL-SAND MIXTURES <br /> MORE THAN GRAVELS LITTLE OR NO FINES <br /> Z HALF OF POORLY GRADED GRAVELS OR GRAVEL SAND MIXTURES, <br /> Q <5%FINES GP <br /> J w = w COARSE LITTLE OF NO FINES <br /> p ~ N SILTY GRAVELS,GRAVEL-SAND-SILT MIXTURES, <br /> O wIII <br /> w cn FRACTION IS GRAVELS GM NON-PLASTIC FINES <br /> = Q w LARGER THAN WITH FINES GC CLAYEY GRAVELS,GRAVEL-SAND-CLAY MIXTURES, <br /> Z JNO.4 SIEVE PLASTIC FINES <br /> Q U) NO. <br /> CLEAN WELL GRADED SANDS,GRAVELLY SANDS,LITTLE OR NO <br /> O <br /> LU Lu Q ON MORETHAN SANDS SW FINES <br /> Q <br /> p w O HALF OF <5%FINES $P POORLY GRADED SANDNO FINES,GRAVELLY SANDS,LITTLE OR <br /> OD Q COARSE SILTY SANDS,SAND-SILT MIXTURES,NON-PLASTIC FINES <br /> FRACTION ISSM <br /> SANDS <br /> SMALLER THAN WITH FINES SC CLAYEY SANDS,SAND-CLAY MIXTURES,PLASTIC FINES <br /> NO.4 SIEVE <br /> ZINORGANIC SILTS,VERY FINE SANDS,ROCK FLOUR,SILTY <br /> = ML OR CLAYEY FINE SANDS,SLIGHTLY PLASTIC CLAYEY SILTS <br /> J w w SILTS AND CLAYS <br /> O N INORGANIC CLAYS OF LOW TO MEDIUM PLASTICITY, <br /> O w w <br /> J J LIQUID LIMIT IS CL GRAVELLY,SANDY,SILTS OR LEAN CLAYS <br /> 0 = Q w LESS THAN 50 OL ORGANIC SILTS AND ORGANIC CLAYS OF LOW PLASTICITY <br /> LU <br /> Z Z <br /> U) 0O MH INORGANIC SILTS,MICACEOUS OR DIATOMACEOUS FINE <br /> C 3 w J ON SILTS AND CLAYS SANDY OR SILTY SOILS,ELASTIC SILTS <br /> LU = Q :r?,• INORGANIC CLAYS OF HIGH PLASTICITY,FAT CLAYS <br /> Z 0 w O LIQUID LIMIT IS CH <br /> .:; <br /> GREATER THAN 50 OH ORGANIC CLAYS OF MEDIUM TO HIGH PLASTICITY, <br /> ORGANIC SILTY CLAYS <br /> HIGHLY ORGANIC SOILS PT PEAT AND OTHER HIGHLY ORGANIC SOILS <br /> GRAIN SIZES <br /> BOULDERS COBBLES GRAVEL I SAND SILTS AND CLAYS <br /> COARSE FINE I COARSE I MEDIUM FINE <br /> 12" 3" 3/4" 4 10 40 200 <br /> CLEAR SQUARE SIEVE OPENING U.S. STANDARD SIEVE SIZE <br /> PENETRATION RESISTANCE AND PROPERTIES BASED ON THE SPT (PECK ET AL.) <br /> SPT (N) Blows/ft Relative Density SPT (N) Blows/ft Consistency <br /> 0-4 Very Loose <2 Very Soft <br /> 4-10 Loose 2-4 Soft <br /> Sands 10-30 Medium Clays 4-8 Medium <br /> 30-50 Dense 8-15 Stiff <br /> Over 50 Very Dense 15-30 Very Stiff <br /> Over 30 Hard <br /> ADDITIONAL TESTS <br /> (OTHER THAN TEST PIT AND BORING LOG COLUMN HEADINGS) <br /> MAX- Maximum Dry Density PM- Permeability PP- Pocket Penetrometer <br /> GS- Grain Size Distribution SG- Specific Gravity FC- Fines Content <br /> SE- Sand Equivalent HA- Hydrometer Analysis DS- Direct Shear <br /> EI- Expansion Index AL- Atterberg Limits UC- Unconfined Compression <br /> CHM- Sulfate & Chloride, pH, Resistivity RV- R-Value MD- Moisture/Density <br /> COR - Corrosivity CN- Consolidation M- Moisture <br /> SD- Sample Disturbed CP- Collapse Potential SC- Swell Compression <br /> REM- Remolded HC- Hydrocollapse 01- Organic Impurities <br /> FIGURE: BL1 <br />