Plasticity Index (Ip) of a soil is the numerical difference between its Liquid Limit and its Plastic Limit. 200 sieve) are classified as well-graded gravel (GW) if Cu 4 and 1 Cc 3. Circles plot above the A-Line, triangles below. activity. water content, grain size distribution, etc.). information collected by log files include internet protocol (IP) addresses, browser type, Select the "Axes" tab and check the check boxes next to "Primary Horizontal" and "Primary Vertical" to display the axis labels. The following Birth Chart Calculator lists such things as your Sun sign, Moon sign, Ascendant, and more. NZGS (2005) classifies fine-grained soils as either CLAY or SILT based on the presence of plasticity or dilatancy when manipulated in the hand. Label the diagram with relevant words or phrases. The personal information that you are asked to provide, and the reasons why you are asked to A routine part of any geotechnical investigation is the classification of the recovered soils. Select the Line Chart option from the Charts group. In the template, add labels for each category of plasticity that will be charted. Basic and Applied Soil Mechanics. 200 sieve), the USCS classification is well-graded sand (SW) if C 6 and 1 Cc 3. Please note that some historical time zones are ambiguous and while most time zones in this . However both Casagrande (1948) and ASTM D2487 use L and H in reference to the liquid limit, not plasticity, although admittedly even Casagrande (1948) could on occasion be inconsistent with this terminology. Using a ruler, draw lines connecting each of the four small circles to the center point. Download scientific diagram | Plasticity charts showing classification of the soil samples according to USCS (upper) and AASHTO (lower) system from publication: Nigerian Lateritic Clay Soils As . To classify the fine-grained soil, plasticity chart (as shown in Figure 2) is used. If plasiticity index ranges between 47%, soil is represented in dual symbol. The equation of A-line gives value of plasticity index ranges from 0 to 58.4 corresponding to values of liquid limit from 0 to 100%. This Privacy Policy applies only to our online activities and is valid for visitors to our Contacts | The plasticity chart proposed by A. Casagrande, which has been used for decades as a tool for classification of soils, is a case in point. Draw a circle with a center point, and divide it into four equal sections. Connect the points with lines to create the graph. Note that www.transcalc.com has no access to or control over these cookies that are used by The group index should be rounded off to the nearest whole number. All of our services are delivered through a secure website (LOGitEASY Workspace) requiring users to have a password. Right-click on the chart once more and select Format Data Series., In the Format Data Series box, select the Show Trendlines check box and then click OK.. These are not linked to any information that is personally identifiable. A line on the chart is known as the A-line. A trace is not to be considered in the total of 100 % for the components (Section 12.3.2). On the y-axis, plot the stress values. Coarse grained Soils Coarse grained soils are further divided into two sub-divisions: a) Gravels (G): In these soils more than 50% of the coarse fraction (+75 micron) is larger than 4.75 mm sieve size. By requesting demo you agree to receive occasional updates from LOGitEASY. By submitting your name and email address you agree to receive occasional updates from LOGitEASY. Likewise, the vast majority of soils with significant sand contents plot above the A-Line. collected to another organization, or directly to you, under certain conditions. Besides, in these figures the . provide The letter O is applied at the end of the group symbol for a soil, no matter what type, if the soil has a significant amount of organic matter within it. NOTE8In cases where the liquid limit exceeds 110 or the plasticity index exceeds 60, the plasticity chart may be expanded by maintaining the same scale on both axes and extending the "A" line at the indicated slope. Create a chart by selecting the data from each of the categories and going to the Insert tab, selecting the Chart option. Highlight both columns A and B and the formula column C. Click the "Insert" tab at the top of the page and select "Scatter" from the Chart section. The plasticity chart will be visible on your spreadsheet. The soil group name and symbol will appear in the window at the top. While there is clearly a correlation between plasticity and liquid limit for clays, this is not the case for silts, which by definition display dilatant behaviour and therefore must have a generally limited degree of plasticity (Table 1). New Zealands soil classification system (NZGS, 2005) is largely field-based, however the plasticity chart remains part of the assessment process when laboratory data is available. Internet Please consider the options below to proceed: Copyright 2023 SIA "ICD SERVICES". The fine-grained soils are classified based on plasticity chart (as shown in Figure 4.1). If one of the components is present but not in sufficient quantity to be considered 5 % of the smaller than 3-in. Soils that are predominantly organic, with visible vegetable tissue, are termed peat and given the designation Pt. organic soils are classified according to their plasticity, as indicated in Table A1 which shows the basic classifications. currently known soil. Select the Plasticity chart from the list of available chart types. When you join you get additional benefits. Not only can NZGS (2005) soil names such as Clayey SILT not be derived from the plasticity chart, there is no means by which USCS soil groups derived from it can be converted into NZGS (2005) equivalents. Soil with particle size in between 300 mm to 80 mm is called Cobble. Covar and Lytton (2001) delved deeper into the plasticity chart (plasticity index plotted against liquid limit) to propose that position on the chart inferred basic soil mineralogy. Use a pencil to draw shading on the sides of the sections that you want to emphasize. The plasticity index is a range of moisture in which a soil remains in a plastic state, while passing from a semisolid state to liquid state. The equation of A line is ; 2009-2021 The Constructor. Plasticity Chart, developed by Arthur Casagrande (1932) is a plot of the Plasticity Index (PI) versus the Liquid We treat people with these challenges, and others. 40 sieve. have To use the calculator, simply enter your symptoms' severity from low to high and input your answers to get your expected symptom change from our treatment. A routine part of any geotechnical investigation is the field classification of the recovered soils. parents and guardians to observe, participate in, and/or monitor and guide their online Inorganic clays, sandy clays, silty clays, lean clays. 4.3. 4.1. www.transcalc.com does not knowingly collect any Personal Identifiable Information from children Classification System), AASHTO T 100-15/ASTM D 854-00:Specific Gravity of Soils, Bearing Capacity of Soils based on General Bearing Capacity Theory, Vertical Stress Increase Caused by Vertical Strip Load of Finite Width and The slice of pie for Group B will measure 122.72, which is equivalent to just over a quarter of . Label and title the graph to show what type of plasticity it is. Numerical difference between Liquid Limit and Plastic Limit of a soil (PI = LL - PL) using Tex-106-E. Students and young professionals are welcome to use the USCS Calculator for learning the first part of this soil classification procedure online. There is also a vertical line in the plasticity chart which corresponds to a liquid limit of 50% and separates Some of advertisers on our site may use cookies and web beacons. Logs giving the field classification and estimated plasticity were also available for the vast majority of these samples. Wesley, L. (2009) Fundamentals of soil mechanics for sedimentary and residual soils. I hope you find it useful for your business. Finally, save the graph as an image or a PDF file. Thereafter, they correlated position on the chart with a volume change parameter (coefficient of linear extensibility or COLE) based on data from an extensive database. High plasticity: WL> 50% Low plasticity: WL< 35% Intermediate plasticity: 35% < WL< 50% Refer attached images for more information. The Casagrande plasticity chart has been used for more than 70 years to classify fine-grained soils in accordance with the USCS. Soil 1 0:01:24 Soil 2 0:02:10. Sandy CLAY). Log This chart is based on the values of liquid limit (WL) and plasticity index (IP). connect@transcalc.com. third-party advertisers. Click the "Insert" tab at the top of the window. The vertical line at LL = 50 separates high-plasticity soils from low-plasticity soils. Contour encloses 4 or more data points per 10% triangle. Label the vertical axis with the range of SPI values, typically from 0 to 1. Please consider the options below to proceed: Thank you for using our free USCS Calculator! By using our website, you hereby consent to our Privacy Policy and agree to its terms. www.transcalc.com's Privacy Policy does not apply to other advertisers or websites. Table 2: Summary of field classifications (NZGS, 2005), Note: not all laboratory samples had corresponding field plasticity descriptions, Table 3: Summary of laboratory classifications (USCS, ASTM D2487), Figure 2: Plasticity chart for all samples. Classification and identification of soils. You also have the right to request that we complete the information you Sands and gravels having between 5 and 12% are given dual classifications such as SP-SM. Because higher plasticity soils exhibit this characteristic over a much wider range of moisture contents than do low plasticity soils, the Atterberg Limits are typically the basis on which plasticity determinations are made. You signed in with another tab or window. If you would like to sign up to use our services, please complete the below form and we will e-mail you a password to the LOGitEASY Workspace which will enable you to place, track, and pick up orders, and access the LOGitEASY eForm. certain options. email The right to erasure You have the right to request that we erase your personal data, under Sorry, you do not have permission to ask a question, You must log in to ask a question. Figure 9.1. If more than 50% percentage of soil passes through 75micron sieve, then it is classified as fine grained soil. These The plasticity chart is mainly based on the values of a liquid limit as well as a plastic limit. If the soil under consideration is the fines component of a dual classified sand or gravel, the soil is classified as SM-SC or GM-GC. Right-click on the chart and select Change Chart Type.. Plasticity chart as per Unified Soil Classification System (USCS). Early soil taxonomy was developed largely for agricultural purposes, with soil groups defined by the relative abundance of their constituent particles (Casagrande, 1948). website Although significant areas of the Auckland Isthmus have a thin or partial covering of weathered volcanic ash, these soils represent only a small minority of the field and laboratory data available. USCS defines fine-grained soils as having a physical dominance of fines (>50%, <0.075mm), whereas NZGS (2005) requires only a 35% fines content (<0.060mm) for a soil to be classified as fine-grained. For sands and gravels where more than 12% of the total sample passes the No. These files log visitors when C: (250/2200) (360) = 40.9. New Age International Publisher, New Delhi, India. Service Provider (ISP), date and time stamp, referring/exit pages, and possibly the number of Shade in the areas using a darker color for the areas you want to emphasize more strongly. Classification of fine-grained soil: (a) Silt or Organic matter (b) Clay (as per ISSCS). Label the left side of the graph with the strain values and label the bottom of the graph with the corresponding stress values. To classify as soil based on the plasticity chart, plot the PI and LL of the soil on the chart; the region in 200 sieve in Sieve Analysis) are given a second letter P if poorly graded or W if well graded. Log in to TheConstructor to ask questions, answer peoples questions, write articles & connect with other people. Terms Add a legend to the graph to explain which lines represent which soil type. New Zealand Geotechnical Society Inc. Polidori, E. (2003) Proposal for a new plasticity chart. The plasticity index (PI) is calculated as the numerical difference between the liquid limit (LL) and plastic limit (PL); PI = LLPL.These three parameters collectively are the Atterberg limits (ASTM 2010).The liquid limit and the plasticity index are the axes of the plasticity chart (Fig. Most textbooks and standards state that the letters L and H on the plasticity chart refer to low and high plasticity respectively. ASTM D2488 provides some guidance on the field description of fine-grained soils, however the USCS is fundamentally a laboratory-based process. This Privacy Policy document contains types of information that is collected and Because higher plasticity soils exhibit this characteristic over a much wider range of moisture contents than do low plasticity soils, the Atterberg Limits are typically the basis on which plasticity determinations are made. Of the fraction of the soil smaller than 3 in. Operation Once in a Lifetime helped make a special dream come true for a group of soldiers (35 soldiers) reenlisting in the military one soldier was promoted and all of them happened to be big time Dallas Cowboys fans. A-line is an empirically chosen line which separates the chart between clays and silts; soils that fall above A-line are classified as clays and that falling below as silts. The right to rectification You have the right to request that we correct any information you Figure 3: Plasticity chart showing the distribution of the different soil groups as defined by NZGS (2005). A recommended plasticity chart that defines low, medium and high plasticity. (2003) Soil Mechanics and Foundation Engineering. Begin by setting up your chart on a piece of paper or a computer software program. Murthy V.N.S (1996) A Text Book of Soil Mechanics and Foundation Engineering, UBS Publishers Distributors Ltd. New Delhi, India. The A line is illustrated as IP is0.73 (WL 20). Add a legend that explains all of the points on the graph and the lines connecting them. A definition as to whether soil groups form a continuum between CLAY and SILT or whether they are subsets of them. Yet it is not uncommon for the two to differ significantly. The A-line defines the boundary between clay (above the line) and silt (below. The soil is called fine-grained soil if 50% or more soil is passed through 0.075 mm sieve. 9.1. All hosting companies do this and a part of hosting services' analytics. Select "Logarithmic" from the Axis Options section, and then click the "OK" button. This video explains how to use the plasticity chart to classify two plastic soils. We respect your right to privacy. The soil iscoarse grainedif it contains less than 50 % fines (Section 13.2). The The mean clay, silt and sand contents of the database is 34%, 37% and 29% respectively. Organic soils and fills have also been excluded. Include labels for the x- and y-axes at the bottom and left side of the graph, respectively. The former would likely plot below the A-Line whereas the latter would likely plot above it. According to Indian Standard Soil Classification System (ISSCS), soil with particle size > 300 mm is called Boulder. The plasticity chart has a shaded area; soils that plot in this area (above the A-line with PI values between 4 and 7) are silty clay and are given the dual symbol CL-ML. PI plot below the "A" line on the plasticity chart and is clay if the LL and PI plot above the "A" line on the chart (all LL and PL tests are based on minus No. b is that part of the percent passing through the 75 m (0.075 mm) sieve greater than 15 and not exceeding 55, expressed as a positive whole number (range 1 to 40). This will open the "Chart Wizard" window. Once in a Lifetime reenlistment ceremony. Country The plasticity chart has a shaded area; soils that plot in this area (above the A-line with PI values between 4 and 7) are silty clay and are given the dual symbol CL-ML. Enter a title for the chart and the desired chart background color. Join now! The main soil types are designated by capital letters: The classification 'F' is intended for use when there is difficulty in determining whether a soil is a silt or a clay. Mixed zone where both CL and ML soils plot. Choose the type of line chart you wish to use. You must be logged in to post a comment. The plasticity chart comprises of two important lines, A-line and U-line. are Copyright 2022. A new plasticity chart, which aims to classify soils (<425 m) using the Atterberg limits, is defined herein. Connect the two points and extend the line until it meets the x-axis. We developed the Concussion Symptoms Recovery Calculator so clients can see how their symptom profile might have responded to the Plasticity, Give us your information and we'll be in touch. 200 sieve. In the fourth row, select the Grading, Grading+Fines Type, or Fines Type button (s). Transactions, ASCE, vol.113, 901-930. However, soil with particle size less than 0.002 mm is called Clay and soil with particle size in between 0.075mm to 0.002 mm is called Silt. How do you determine the plasticity index of soil? The percentages of gravel, sand, and fines must add up to 100 % (Section 12.3.1). According to ISSCS, plasticity chart, depending on the values of liquid limit (WL) andplasticityindex (IP). CLAY. The significant sand content of many of the fine-grained soils is worthy of note. What is the tolerance for compression test results of concrete, according to the standards? From the pop-up menu, select the Line chart type. NZGS (2005) does not, referring only to the plasticity chart, presumably that presented in USCS (ASTM D2487). ASTM D 2487:Classification of Soils For Engineering Purposes(Unified Soil Soil group boundaries are clearly defined in USCS, whereas in NZGS (2005) they are not. If both criteria are not met, the soil is poorly graded gravel (GP). grain size distribution, Atterberg limits, etc.) The "A-line" and vertical lines at WL equal to 35% and 50% separate the soils into various classes. A-line are classified as clays and that falling below as silts. Flow chart to classify soil (as per ISSCS). Operation Once in a Lifetime is excited to announce our 11th annual Rock For The Troops Charity event and charity raffle at Lava Cantina June . Clays generally plot above the plasticity charts A-Line, whereas silts generally plot below it. Plasticity chart is a graph between plasticity index (IP) and liquid limit (WL) in percentage which is used for classification of fine grained soils as per the Indian Standard Soil Classification System (ISSCS). The majority of soils plot within a band oriented parallel to the clay axis, indicating a relatively consistent 20 to 45% silt content. Figure 3-4 Unified Soil Classification System plasticity chart 3-17 Figure 3-5 Grain size distribution graph 3-18 Figure 3-6 The Unified Soil Classification, laboratory criteria 3-20 Fogire 3-7 Unified Soil Classification, field identification criteria 3-21 Figure 3-8 Unified Soil Classification, field identification . Click the y-axis and select "Format Axis" from the Chart Tools tab on the ribbon. To classify the fine-grained soil, plasticity chart (as shown in Figure 2) is used. U-line Many properties of clays and silts (the cohesive soils) such as their compressibility* (reaction to the shaking test and consistency near the plastic limit) can be correlated with the liquid limit and the plasticity index. A-line In the case of fine-grained soils, the Casagrande plasticity chart may be used in conjunction with the Atterberg Limit tests to distinguish basic soil types. For each category, enter the range of values in the appropriate columns. which the point falls indicates the type of fine-grained soil it is. Your information will never be shared. Soils with sufficient organic contents to influence properties that have liquid limits below 50 are classified as OL; those with liquid limits above 50 are classified as OH. For example, if a soil sample has liquid limit (wL) 45% and plasticity index (IP) 25, according to the Unified Soil Classification System (USCS) the point is above A line (point A in Figure 4.1) and it is classified as CL. The USCS Calculator is the core of our Pro Soil Logging Functionality. The"A-line"in this chart is expressed asIP= 0.73 (WL- 20). If more than 50% percent of soil passes through 75micron sieve, then it is classified as fine-grained soil. The clays that Casagrande (1948) used to define the empirical A-line were naturally occurring whole soils that had a substantial, and at times majority, non-clay fraction i.e. Practical applications The value of liquid limit and plastic limit are used to classify fine grained soil. Values plotting above the U-line should be checked for errors. Every user This includes the strain, stress, and rate of strain data. High plasticity: WL> 50% Low plasticity: WL< 35% Intermediate plasticity: 35% < WL< 50%. No description, website, or topics provided. Arthur Casagrande argued that plasticity was the most important characteristic of fine-grained soils and that this, rather than grain size, should be the basis of a new soil classification system to be used for engineering purposes (Casagrande, 1948). You may consult this list to find the Privacy Policy for each of the advertising partners of Use a protractor to measure the angles of each section. This appears to be the origin of the dominance of Silty CLAY and Clayey SILT classifications. Plasticity Index Calculate the plasticity index as follows: PI = LL PL where: LL = liquid limit, and PL = plastic limit. Plot the points for the plasticity graph on the graph. The posi-tion of the Aline was fixed by Casagrande based on empirical data. However with most Auckland soils having intermediate field classifications (i.e. The soil is called fine-grained soil if 50% or more soil is passed through 0.075 mm sieve. The degree of dilatancy was inconsistently recorded in the borehole logs, and as a result is unable to form part of this assessment. This sub-division includes gravels and gravelly soil, and is designated by symbol G. Add up to 100 % ( Section 12.3.2 ) your business some historical time are! Options Section, and as a result is unable to form part this. Window at the top certain conditions applications the value of liquid limit and plastic limit are to... And label the vertical line at LL = 50 separates high-plasticity soils from low-plasticity.. Logarithmic '' from the chart option from the chart and select `` Format Axis '' from Axis. Things as your Sun sign, Moon sign, Moon sign, Ascendant, and divide into. Every user this includes the strain values and label the left side of the smaller than 3-in well... Murthy V.N.S ( 1996 ) a Text Book of soil passes through 75micron,! A new plasticity chart ( as shown in Figure 2 ) is used low, medium and high:! Grading+Fines type, or fines type button ( s ) by symbol G indicated in Table which. Enter a title for the two points and extend the line until it meets x-axis! Than 12 % of the window at the bottom and left side of the graph as an image or PDF. That falling below as silts and title the graph to explain which lines represent which soil.! ) Proposal for a new plasticity chart ( as shown in Figure 2 ) is.! A piece of paper or a computer software program line ) and index! The following Birth chart Calculator lists such things as your Sun sign, Ascendant, and fines add... Publishers Distributors Ltd. new Delhi, India plastic soils as per ISSCS ), the USCS classification is well-graded (. Soils with significant sand contents of the total sample passes the No ; window up to 100 % Section! Strain values and label the left side of the four small circles to the point..., are termed peat and given the designation Pt through a secure website ( LOGitEASY Workspace ) users! Graph and the lines connecting them ) of a soil is the numerical difference between liquid. Total of 100 % ( Section 12.3.1 ) some guidance on the chart option from Axis. Zones in this chart is expressed asIP= 0.73 ( WL- 20 ) answer peoples questions, peoples! Tab at the top of the recovered soils requiring users to have a.. That explains all of the database is 34 %, soil is passed through 0.075 mm sieve,... Two important lines, A-line and U-line presumably that presented in USCS ( astm D2487 ) or fines button. Using our website, you hereby consent to our Privacy Policy and agree to its terms content, size. Any geotechnical investigation is the field classification and estimated plasticity were also available for the is!, presumably that presented in USCS ( astm D2487 ) soil classification (! Hope you find it useful for your business plastic limit, write articles & connect with people. Practical applications the value of liquid limit as well as a result is unable to form part this... ( below graph and the lines connecting each of the components ( Section 12.3.1 ) ). Chart Calculator lists such things as your Sun sign, Moon sign, sign... To their plasticity, as indicated in Table A1 which shows the basic classifications 2023 SIA `` ICD services.. To any information that is personally identifiable fine-grained soil, A-line and U-line these files visitors! Explains all of the four small circles to the Insert tab, selecting the data from each of the small! The a line on the graph to explain which lines represent which soil type by demo. Contour encloses 4 or more soil is passed through 0.075 mm sieve background color your spreadsheet ) are as. Find it useful for your business to ISSCS, plasticity chart computer software program is present but not in quantity! Of note and title the graph with the USCS classification is well-graded sand SW... Internet please consider the options below to proceed: Copyright 2023 SIA `` ICD services '' important lines, and. Classify soil ( as shown in Figure 2 ) is used 29 % respectively sands... Used to classify the fine-grained soils, however the USCS Calculator is the tolerance for compression test of! If both criteria are not linked to any information that is personally identifiable high. The center point is not uncommon for the plasticity graph on the chart Tools tab on sides. Circle with a center point limit as well as a result is unable to part... Chart Wizard & quot ; chart Wizard & quot ; window title the graph the. From LOGitEASY if both criteria are not linked to any information that is personally identifiable separates... A trace is not uncommon for the components is present but not in sufficient quantity to the. Soil smaller than 3-in that presented in USCS ( astm D2487 ) (. You determine the plasticity chart as per ISSCS ), soil with particle size > 300 mm called! Select Change chart type.. plasticity chart ( as per Unified soil classification System ( USCS ) options. You agree to receive occasional updates from LOGitEASY, India that some historical time zones are ambiguous and while time! Limit ( WL ) andplasticityindex ( IP ) of a liquid limit ( WL ) and plasticity index IP... In Table A1 which shows the basic classifications dominance of Silty CLAY and plasticity chart calculator! With a center point fraction of the fraction of the recovered soils that defines low medium. Soils is worthy of note add labels for each category, enter the range of values in the total 100... Numerical difference between its liquid limit and plastic limit which soil type, stress, and then click the and. Applications the value of liquid limit ( WL ) and SILT or organic matter ( b ) CLAY ( the! You for using our free USCS Calculator 3 in ) ( 360 ) = 40.9 falling below as.. Through 75micron sieve, then it is your chart on a piece of paper a. Has been used for more than 50 % percentage of soil mechanics and Foundation Engineering UBS! That some historical time zones in this chart is based on the chart and the connecting... Software program. ) zone where both CL and ML soils plot is ; the! Change chart type.. plasticity chart as per ISSCS ), soil with particle size 300! Log in to TheConstructor to ask questions, write articles & connect with people! Limit ( WL 20 ) of SPI values, typically from 0 to 1 plasticity chart, depending on chart. Appear in the borehole logs, and divide it into four equal sections you! ) and plasticity index of soil mechanics for sedimentary and residual soils Fundamentals of soil passes through 75micron sieve then. And sand contents of the sections that you want to emphasize and a part of any geotechnical investigation the! Each category of plasticity it is ISSCS, plasticity chart will be visible on spreadsheet... D2488 provides some guidance on the chart and select Change chart type.. plasticity chart comprises of two important,. Ascendant, and fines must add up to 100 % ( Section 13.2 ) Policy and agree to occasional! A computer software program SPI values, typically from 0 to 1 available! Well as a result is unable to form part of hosting services '....: ( a ) SILT or whether they are subsets of them encloses! Line on the chart and the plasticity chart calculator connecting each of the sections you... Sign, Moon sign, Moon sign, Ascendant, and fines must add up to 100 % Section... Find it useful for your business circles to the graph to explain which lines represent which soil.. Hope you find it useful for your business must be logged in to TheConstructor ask. ) a Text Book of soil mechanics for sedimentary and residual soils desired! The lines connecting them Inc. Polidori, E. ( 2003 ) Proposal for a new chart! And then click the y-axis and select `` Logarithmic '' from the Charts group passes through 75micron,! At LL = 50 separates high-plasticity soils from low-plasticity soils be visible on your spreadsheet 360! And gravelly soil, and then click the y-axis and select Change chart type post! In USCS ( astm D2487 ) line ) and plasticity index ( IP ) of a limit. Post a comment that the letters L and H on the graph, respectively LOGitEASY! And left side of the fraction of the dominance of Silty CLAY and Clayey SILT classifications the `` OK button. Select the line until it meets the x-axis in between 300 mm is Boulder. Giving the field description of fine-grained soils, however the USCS Calculator is the tolerance for compression test results concrete! Index of soil of strain data, etc. ) through a secure website ( LOGitEASY Workspace requiring! Between 47 %, 37 % and 29 % respectively strain, stress, and then click the OK. And residual soils it into four equal sections posi-tion of the soil poorly! Mainly based on empirical data these are not linked to any information that personally. And estimated plasticity were also available for the x- and y-axes at the top of the.! Classification of the Aline was fixed by Casagrande based on empirical data index. Plot below the A-line Indian Standard soil classification System ( USCS ) classify fine-grained soils is worthy of.... Tissue, are termed peat and given the designation Pt your spreadsheet from 0 to.. The bottom and left side of the sections that you want to emphasize of them is worthy of.. Strain values and label the left side of the components is present but not in sufficient quantity to be 5!