03-27-2002 Council Agenda - Laserfiche WebLink

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GENERAL DRILLING & SAMPLING SYMBOLS SYMBOL DEFINITION C.S. Continuous Sampling P.D. 2 -3/8'• Pipe Drill C.O. Cleanout Tube 37 HSA 31/41" I.D. Hollow Stem Auger 4 FA 4" Diameter Flight Auger 6 FA 6" Diameter Flight Auger 212 C 272•' Casing 4C 4" Casing D.M. Drilling Mud J. W. Jet Water H. A. and Auger NXC Size NX Casing BXC Size BX Casing AXC Size AX Casing SS 2" O.D. Split Spoon Sample 2T 2" Thin Wall Tube Sample 3T 3" Thin Wall Tube Sample WATER SYMBOL Water levels shown on the boring logs are the and under the conditions indicated. In sand, reliable ground water levels. In clay soil, water level within the normal scope of a test or layers of more pervious waterbearing soil may be necessary to reach equilibrium. Therefore, for cohesive or mixed texture soils may not table. The available water level information is NOTES LABORATORY TEST SYMBOLS SYMBOL DEFINITION W Moisture content - percent of dry weight D Dry density - pounds per cubic foot LL, PL Liquid and plastic limits determined in accordance with ASTM D 423 and D 424 Ou Unconfined compressive strength - pounds per square foot in accordance with ASTM D2166 -66 Additional insertions in Qu column Pq Penetrometer reading- tons /square foot Ts Torvane reading- tons /square foot G Specific gravity - ASTM D 854 -58 SL Shrinkage limit - ASTM D 427 -61 pH Hydrogen on content -meter method 0 Organic content - combustion method M.A." Grain size analysis 0" One dimensional consolidation Oct Triaxia l compression "See attached data sheet and /or graph LEVEL — levels measured in the borings at the time the indicated levels can be considered it is not possible to determine the ground boring investigation, except where lenses are present and then a long period of time the position of the water level symbol indicate the true level of the ground water given at the bottom of the log sheet. DESCRIPTIVE TERMINOLOGY DENSITY TERM "N" VALUE Very loose 0 -4 Loose 5 -8 Medium Dense 9 -15 Dense 16 -30 Very Dense Over 30 CONSISTENCY TERM "N" VALUE Soft 0 -4 Medium 5 -8 Rather Stiff 9 -15 Stiff 16 -30 Very Stiff Over 30 Standard "N" Penetration: Blows per foot of a 140 pourd hammer falling 30 inches on a 2 inch OD split spoon. RELATIVE PROPORTIONS TERM RANGE Trace 0-5% A Little 5 -15% Some 15 -30% With 30-50% PARTICLE SIZES Boulders Over 3" Gravel Coarse =/� ' -3•• Fine 04 -1/4" Sand Coarse 04 -010 Medium 010 -040 Fine 040-0200 Silt and Clay Determined by plasticity Characteristics Note: Sieve sizes shown are U.S. Standard SE- 4(70A)