- B A Soil Sample Was Collected In Alor Gajah Melaka Which Is Denoted As Sample Nsr Has Been Sieved For Design Purposes 1 (84.13 KiB) Viewed 18 times
100 90 RO 70 60 - (%) 210 കി. 38 40 30 20 10 0 0.001 0.01 0.1 1 10 100 Seive Size (mm) Figure Ol(a): Sieve analysis result of the soil N 300 0.005 0.075 to 20 G475 mi 10 2.0 4.75 19 mm Us Sand Gravel Cobbles Con Core 0.01 0.1 100 Sit and day Madu Sand Gravel AASTHO 10 200 G.OTS who 0 0.425 whid 4,75 T 75 mm 2. Figure Q1(b): Particle size classification for USCS - AASHTO
TABLE Q1: The Unified Soil Classification System (USCS) Criteria for assigning group symbols Group symbol GW GP GM GC SW SP SM SC CL Gravels Clean Gravels Less Cu>4 and 1 <C<<34 More than than 5% fines 50% of coarse C/<4 and/or C<1 or C > 3c fraction Gravels with Fines PI< 4 or plots below "A" line Coarse-grained soils retained on More than 12% More than 50% No. 4 sieve finesad Pl> 7 and plots on or above "A" line retained on No. 200 Sands Clean Sands Less C> 6 and 1 <C. $34 sieve 50% or more than 5% fines of coarse C.<6 and/or Ce<l or Co>34 fraction Sands with Fines PI<4 or plots below "A" line passes No.4 More than 12% sieve fineshd PI> 7 and plots on or above "A" line Silts and clays PI> 7 and plots on or above “A” line Inorganic Liquid limitless PI<4 or plots below “A” line than 50 Liquid limit-oven dried Fine-grained soils Organic < 0.75 OL zone 50% or more passes Liquid limit - not dried No.200 sieve Silts and clays PI plots on or above "A" line Inorganic Liquid limit 50 PI plots on below “A” line or more Liquid limit - oven dried Organic < 0.75 OH zone Liquid limit - not dried Highly organic soils Primarily organic matter, dark in color, and organic odor "Gravels with 5 to 12% fine require dual symbils: GW-GM, GW-GC, GP-GM, GP-GC. Sands with 5 to 12% fines require dual symbols: SW-SM, SW-SC, SP-SM, SP-SC. *C=D/D/ C = (Dz.)/ DD "If 4<PIS 7, use dual symbol GC-GM or SC-SM. *If 4 SPIS 7, use dual symbol CL-ML. ML OL CH MH OH Pt
Group symbol Group name GW <15% sand Well-graded gravel 215% sand → Well-graded gravel with sand GP → <15% sand → Poorly graded gravel 215% sand → Poorly graded gravel with sand GW-GM <15% sand Well-graded gravel with silt 215% sand Well-graded gravel with silt and sand GW-GC <15% sand Well-graded gravel with clay (or silty clay) 215% sand Well-graded gravel with clay and sand (or silty clay and sand) GP-GM <15% sand Poorly graded gravel with silt 215% sand Poorly graded gravel with silt and sand GP-GC <15% sand Poorly graded gravel with clay (or silty clay) 215% sand Poorly graded gravel with clay and sand (or silty clay and sand) GM <15% sand Silty gravel 215% sand Silty gravel with sand GC <15% sand Clayey gravel 215% sand → Clayey gravel with sand GC-GM <15% sand Silty clayey gravel 215% sand Silty clayey gravel with sand SW <15% gravel Well-graded sand 15% gravel Well-graded sand with gravel SP <15% grave! Poorly graded sand 215% gravel Poorly graded sand with gravel SW-SM <15% grave! Well-graded sand with silt 15% gravel Well-graded sand with silt and gravel SW-SC <15% gravel Well-graded sand with clay (or silty clay) 215% gravel Well-graded sand with clay and gravel (or silty clay and gravel) SP-SM <15% gravel Poorly graded sand with silt 215% gravel Poorly graded sand with silt and gravel SP-SC <15% gravel Poorly graded sand with clay (or silty clay) 15% gravel → Poorly graded sand with clay and gravel (or silty clay and gravel) SM <15% gravel Silty sand 215% gravel Silty sand with gravel <15% gravel Clayey sand 215% gravel Clayey sand with gravel SC-SM <15% gravel Silty clayey sand 215% gravel Silty clayey sand with gravel FIGURE Q1(e): Flowchart group names for gravelly and sandy soils SC
<30% plus No. 200 CL PI > 7 and plots on or above A-line <15% plus No. 200 15-2946 plus No. 200 % sand 2 gravel % sand <% gravel 230% plus No. 200 sand 2 gravel % sand <% gravel <15% gravel 215% gravel <15% sand 2:15% sand <30% plus No. 200 Inorganic 45 P157 CL.ML and plots on or above A-line <15% plus No. 200 15-29% plus No. 200 sand 2% gravel % sand <% gravel Lean clay Lean clay with sand Lean clay with gravel Sandy lean clay Sandy lean clay with gravel Gravelly lean clay Gravelly lean clay with sand Silty clay Silty clay with sand Silty clay with gravel Sandy silly clay Sandy silty clay with gravel Gravelly silly clay Gravelly silty clay with sand Silt Silt with sand Silt with gravel Sandy sili Sandy silt with gravel Gravelly silt Gravelly silt with sand sand 2 gravel sand <% gravel <15% gravel 2156 gravel <15% sand 215% sand 2-30% plus No. 200 <30% plus <50 No. 200 ML PI< 4 or plots below A-line <15% plus No. 200 15-29% plus No. 200 % sand 2 gravel % sand < % gravel sand 2 gravel % sand gravel <15% gravel 215% gravel <15% sand 215% sand 230% plus No. 200 Organic LL-oven dried <0.75 LL-not dried OL CH Pl plots on or above A-line See Figure 5.6 <30% plus <15% plus No. 200 No. 200 15-29% plus No. 200 % sand 2% gravel 230 plus No. 200 % sand < % gravel sand gravel sand<% gravel <15% gravel 215% gravel <15% sand 215% sand Inorganic Fat clay Fat clay with sand Fat clay with gravel Sandy fat clay Sandy fat clay with gravel Gravelly fat clay → Gravelly fat clay with sand Elastic silt Elastic silt with sand Elastic silt with gravel Sandy elastic silt Sandy elastic silt with gravel Gravelly elastic silt Gravelly elastic silt with sand <30% plus No. 200 MH <15% plus No. 200 15-29% plus No. 200 % sand gravel % sand <% gravel - 50 Pt plots below A-line >30% plus No. 200 % sand 2 gravel % sand gravel <15% gravel 215% gravel <15% sand 215% sand Organic u-oven dried LL- not dried <0.75 OH See Figure 5.6