WORK PLANS - Laserfiche WebLink

Home Browse Search

UNIFIED SOIL CLASSIFICATION SYSTEM Major Division Graphic Lt r. Description Major Division Graphic Ltr. Description Inorganic. Silts and very I. Well-graded Gravels or fine Sands, rock flour, GW Grave!-Sand mixtures, ML Silty or Clayey fine Sands, .l IltSle or no tines. or Clayey Silts with slight / plasticity. Poorly-graded Grovels or Silts l,n Gravel // GP Gravel-Sand mixtures. medium Clays of low to little or no fines. and CL medium plasticity, Gravelly and / Clays Clays, Sandy Clays, Slay Gravelly ! l, I l, LL<50 Clays, Lean Clays. � Soils f I.I I CM Silty Gravels, Grovei-Sand- I I l Sill mixtures- r°y I I 1 Organlc Silly and Organic ID ! I OL Silt--Clays of low plasticity. i� y I I GC Clayey Gravel, Gravel-Sand- C I I I C: Clay mixtures. Inorganic Silts, micaceous o or diatomaceous fine 6 MH Sandy or Silty soils, I Well-graded Sand or C_ elastic Silts. SW Groveliy Sands, little or m no fines. L` Silts ao and - Inorganic Clays of high I - U Sand Poorly-graded Sonds or- GIOys CH plasticity, rat Clays. SP Gravelly Sands, little-or LL>50 and na fines. i Sandy organic Clays of medium Sails Silty Sands, Sand�Silt i OH- to High plasticity, organic SM mixtures. i ,Silts. Highly SC Clayey Sands, Sand-Cloy QrgOnlCPT Peat end other highly . mixtures. organic soils. �0 Soils i' WELL CONSTRUCTION, SYMBOLS IDepth through which sampler Is driven Neat cement T Refatilve fy undisturbed F-1Sand -pack a ■ p (Monterey Sand #3) No sample recovered ■ Bentonite Static water level observed in well/boring Slunk PVC Q Initial water level rM = observed in well/boring 5-10 Sample number Machine=slotted PVC RELATIVE DENSITY CONSISTENCY Sands, Gravels. And glows Foot Clays And Strength Non-Plastic 5iits / Plastic Silts g Blows/Foot Very Loose 0 - 4 Very Soft 0 - 1/4 0 _ 2 Loose 4 - 10 Soft 1/4 - 1/2 2 _ 4 Medium Dense 10 - 30 Firm 1/2 - 1 4 - 5 Dense 30 - 50 Stiff 1 - 2 a - 16 Very Dense over 50 Very Stiff 2 - 4 16 - 32 Hard Over 4 Over 32 ' Blows represent the number of blows of,a 140-pound hammer falling 30 inches to drive the sampler through each 5 inches of an 18-inch penetration. Unconfined compressive strength in tons/sq. ft. as determined by Idboratory testing or approximated by the standard penetration test (ASTM D-1586), pocket penetrometer. tarvone, or visual, observation.