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F, GENERAL NOTES DRILLING & SAMPLING SYMBOLS LABORATORY TEST SYMBOLS SYMBOL DEFINITION SYMBOL DEFINITION C.S. Continuous Sampling W Moisture content - percent of dry"weight P.D. 2-3/8" Pipe Drill D Dry density-pounds per cubic foot C.O. Cleanout Tube LL. PL Liquid and plastic limits determined in 3% HSA 3%- I.D. Hollow Stem Auger accordance with ASTM D 423 and D 424 4 FA 4" Diameter Flight Auger Qu Unconfined compressive strength-pounds per 6 FA 6" Diameter Flight Auger square foot in accordance with ASTMD2166-66 2% C 2%- Casing ' 4C 4" Casing Additional insertions l Ou column D.M. Drilling Mud - Pq Penetrometer reading-tons/square foot J. W. Jet Water Ts Torvane read ing-tons /*quo re foot H. A. H H Henri Auger G Specific gravity - ASTM D 854-58 NXC Size NX Casing SL Shrinkage limit - ASTM 0 4271 BXC Size BX Casing PH Hydrogen ion content-meter method AXC SS SS Size AX Casing 0 Organic content-combustion methoo 2" O.D. Split Spoon Semple • 2T M.A. Grain size analysis 2" Thin Wall Tube Sample co One dimensional consolidation 3T 3" Thin Wall Tube Sample Qc' Triaxial compression *See attached data sheet and/or graph WATER LEVEL SYMBOL -_ Water levels shown on the boring logs are the levels measured in the borings at the time and under the conditions indicated. In sand, the indicated levels can be considered reliable ground water levels. In clay soil, it is not possible to determine the ground water level within the normal scope of a test boring investigation, except where lenses or layers of more pervious waterbearing soil are present and then a long period of time may be necessary to reach equilibrium. Therefore, the position of the water level symbol for cohesive or mixed texture soils may not indicate the true level of the ground water table. The available water level information is given at the bottom of the log sheet. i DESCRIPTIVE TERMINOLOGY DENSITY CONSISTENCY TEAM ••N" VALUE TERM "N" VALUE Very loose 0-4 Soft 0.4 Loose 5-8 Medium 5-8 Medium Dense 9-15 Rather Stiff 9-15 Dense 16-30 Stiff 16-30 Very Dense Over 30 Very Stiff Over 30 Standard "N" Penetration: Slows per foot of a 140 pound hammer falling 30 inures on a 2 inch OD split spoon. RELATIVE PROPORTIONS TERM MANGE Trace 0-5% A Little 5-15% Some 15.30% With 30-50% PARTICLE SIZES Boulders Over 3" Gravel Coarse Fine N4,li" Sand Coarse 84410 Medium N10440 Fine 8404200 Silt and Clay Determined by plasticity Characteristics None: Sieve sizes shown am U.S. Sandard SE-400A)