Transcription of (PROPOSAL ON SUBSURFACE INVESTIGATION)
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(PROPOSAL ON SUBSURFACE INVESTIGATION)
(PROPOSAL ON SUBSURFACE INVESTIGATION). 1.. 2 Motorize System Rotory System 100 . (4 ) (Steel Casing) . 100 . (Wash Boring). 2.. (Sholby Tube Sampler) .. 65 .. Consistency . Very soft to stiff (Undisturbed sample).. (Shear Strength).. (Split Spoon Sampler) 2.. 69 .. 15 . 3 2 Standard Penetration Number . (Standard Penetration Test-SPT) . ( ) ASTM D 1586. 1. 3. (Soil Cassification). Unified Soil Chassification System (USCS). Cohesionless Soils . (Principle Name) (Supplement Name) . : 50-100 % . (Gravel, sand, silt, clay). : Trace 5 % .. (Gravel, sand, silt, clay) Few 5- 10 % . Little 15 - 25 % .. Some 30- 45 % . (Relative Density) Cohesionless Soil SPT.. SPT N.. Internal Friction ( ). Blows (%). 0-4 0 - 20 < 28o 4 - 10 20 - 40 28o - 30o 10 - 30 40 - 60 30o - 35o 30 - 50 60 - 80 36o - 41o >50 80 - 100 >41o Cohesive Soil Plasticity . Consistency Cohesive Soil SPT Undrained Shear Strength.
ห้องปฎิบัติการด้วยความระมัดระวัง และเก็บรักษาไว ้ในที่ควบคุมความช ืน้ เพอทดสอบหาคื่ ่าแรงเฉ ือน (Shear Strength)
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