Question

] བན་བབསྔ Percent finer by weight 0t 001 10 0.1 ་་། Particle size (mm) 001

Classify inorganic soil A in the figure using the USCS classification system if the soil has a liquid limit of 44 and a plastic limit of 21.

Using the chart below

Answer 1

1 " Given that, Liquid Limit = 44 Plastic Limit = 21 By question itself said, Inorganic sont classified by Unified soil classification system In Uscs classification first we have O Coarse ghained 80813 @fine grained soils. first we have a classification, Classification the No.200 passing 50% or more More than soy retained on Os above No. 2005ieve Sieve. by showing figure in question, the A-Line is fine graded soil In fine graded soils silts & clays are there. - Pl>7 & plotsoo or above "A" line 7 silts a clays Inorganic plc4 & plos bloow A' line . - ML dh <50 ank LL-ovendriel 20-25 - OL u- not dried - OL our case is CL- elean clay. because plastic linic greather than 7. and Inorganic Bolluscs plasticity chont cortill PL 2013 (4-0) IH OH Plasticity Inden (el) 30 By using Plasticity chart to P1 = LL-PL = 44-212 23 It also indicate lean day - CL Inorganic dear clay ch. CH sretne 0 0 36 GO SO 60 Liquid cinit (LL) (%)