User Manual - GEOSYSTEM Software
Contents
1. 21 3 3 COPYING AND PASTING TEST DATA veg etg e Ha t ERES 22 34 DELETING A GBR TEST pu u nanus etia ee a eda ted 22 4 CURVE VIEWING AND SHAPING 23 4 1 CURVE HESBAPIND decida dn Rame Ead hood c es da dou p Cle Oo nnt e 24 5 PRINTING REPORTS u nnnm nnnm u u 25 5 1 EXPORTING REPORTS TO FILES de tonis 27 5 2 COPYING REPORTS TO THE WINDOWS CLIPBOAPD 31 5 3 LISTING RESULTS FROM MULTIPLE CBR TESTS 31 6 6 1 6 2 6 3 6 4 6 5 6 6 6 7 TECHNICAL SPECIFICATIONS 33 MOISTUHE CONTENT unii noon hob 33 DRBY DENSITY c EE 33 PERCENT SWELL AND SOAK 34 PENETRATION STRESS nennen nennen nnn n nnn n nnns 34 CBRUVALHES m A e A MU A UA MM A e A E SME EE 35 ONLINE TESTING a taa ea tust 36 VALUES AVAILABLE FOR DATA SUMMARIES cernere 37 CBR User s Guide 1 Introduction Installation and Setup The GEOSYSTEM California Bearing Ratio module CBR is designed to reduce laboratory data from a CBR test Following is a list of supported features gt gt Uu vy U ASTM D 1883 AASHTO T193 and Virginia Test Method 008 test standards B2. After setting up the list you can enter your moisture content test data with a container ID in place of the tare weight Selecting Options gt Container List displays the container weight editor GILT D g ami mhin Figure 1 3 1 Container Weight Editor Container IDs are what you use when entering moisture content data they re convenient unique identifiers assigned to the containers holding the moisture content samples IDs may be any combination of alphabetic and numeric characters e g ACD or 123 IDs that differ only by case e g 3A and 3a are considered identical To add anew container to the list Click on the first blank row in the list and enter the container ID and container weight Introduction Installation and Setup To remove a container from the list Click in either the Container ID or Weight columns of the row you want to delete then click on the Delete button Note that this list is optional if you run a moisture content test with a container which is not on your container list you can skip entering a container ID and instead enter the container s weight If you want to use the container list make sure to select Tare ID in the Data entry requires Setup field see Section 1 2 CBR User s Guide 2 Walkthrough Before discussing CBR s capabilities in depth we ll introduce the package by providing a 10 minute walkthrough of the data entry process 1 Start the GEOSYSTEM for Windows package
3. If you have a GEOSYSTEM shortcut on your desktop double click on it you can also click on your Start button and select Programs gt GEOSYSTEM gt GEOSYSTEM for Windows On the left side of the program s screen is a directory box navigate to the directory where the GEOSYSTEM software is installed If you ve installed the software onto your own hard disk this will probably be either C GEOSYS or C PROGRAM FILESNGEOSYS In the program directory you ll find a file called DEMO double click on it The software should display the contents of the DEMO project On the left side of the screen is a yellow box listing the material sources from which DEMO s testing samples were taken double click on 8 4 On the right side of the screen you should see a list of samples taken from B 4 find the data entry card for sample s 4 and click on the CBR link for that card You should see the CBR data entry screen depicted in Figure 2 2 1 Select Options gt CBR Setup In order for the tutorial to work there are several important settings that must match the ones shown below Mold weight is entered in 155 Data entry requires tare weight Click on the OK button Click on the Sample Info tab at the bottom of the screen You are now looking at the window that the program uses to collect basic information about the CBR test and the sample tested GEOSYSTEM for Windows test modules share results so many of these fields may already be
4. Optimum Moisture Content This field is optional CBR merely prints this value on hardcopy reports If PROCTOR is installed the value is automatically retrieved from the PROCTOR test performed for the sample Chart Report Figure Number This value is printed at the bottom right corner of the chart report Typically the value will be shown as Figure No xxxxxxx to change the title from Figure No to e g Plate No exit CBR CBR Save and Exit then select Options Setup General Options click on the Lab Modules tab and enter the new title into the On reports Figure No is titled field 15 Data Entry 3 2 CBR Testing Data Pressing Enter after typing in a chart report figure number or clicking on the Specimen 1 Specimen 2 or Specimen 3 tabs at the bottom of the screen displays the testing data entry screen shown below GEOSYSTEM CBR B 3a S 4 12 5 Light brown sandy gravel some 3 material Dry weight gms 305 Moisture 16 2 Initial density 25 06876 uam 15 4081 Height soil in 58 Dry Density 17 45 kN7m WE est data ERES Poa time hrs in 1 000 E E 0 100 00 2 24 102 0 0 3 48 104 01 Sample Info Specimen 1 Specimen 2 Specimen 3 CBR Curve Report Ready Figure 3 2 1 As Molded Moisture Content and Dry Density Fields CBR supports testing either a single specimen e g at optimum moisture or three specimens wi
5. Tare weight gms Wt mold soil Ibs Dry weight gms Height soil in 22 Press Enter until you reach the Number of blows field then enter the following Number of blows Load ring constant Press Enter twice after entering the load ring constant 23 Enter the third specimen s penetration test data 10 CBR User s Guide 24 Click on the CBR Curve tab this displays the tests CBR vs density curve The program allows you to reshape the curve if you don t like how it s drawn to do this select Curve Add Shaping Point then move the mouse to a point in the chart through which the curve should pass and click the left mouse button You can also select the penetration depth used for the CBR values by clicking on a new depth in the CBR Penet box at the left side of the screen 25 The program features two report forms a testing data summary Figure 4 1 1 and a chart report Figure 4 1 2 You can preview the chart report by clicking on the Report tab at the bottom of the screen If you have a lower resolution display you can zoom in on a portion of the report by moving the mouse cursor over the report You can also magnify the entire display by moving the slider located at the bottom of the left hand toolbar 26 Now we ll print the program s two test report formats select CBR Output Data Summary Report then at the following dialog click on the Output button This report is most useful
6. Swell 96 72 Elapsed Time fhrs Moisture after soaking Top 1 inc Wet weight gms 553 Dry weight gms 223 Container ID d Tare weight gms 59 Sample Info Specimen 1 Specimen 2 J Specimen 3 J CBR Curve J Report J Enter the weight of the sample and tare prior to drying Figure 3 2 2 Soak Test Data Entry 17 Data Entry soak test was not run for the specimen simply press Enter twice when you reach the swell test grid the program will skip directly to the penetration test data section If you do have swell data begin by entering the initial dial reading which will be O if the dial was reset prior to starting the test Continue by entering elapsed time and dial reading pairs after entering the final dial reading press Enter twice to jump to the after soak moisture content data entry fields Elapsed times for each swell reading should be entered in decimal hours Swell dial gauge readings are entered in either 1000 of an inch or 1000 of a mm depending upon the dimension units associated with the current project see the note at the bottom of page 4 Ifyou missed entering a row of swell data you can enter it onto the first blank row of the readings grid or you can use the Edit Insert Data Row menu selection to insert the row in place f you ve accidentally duplicated a row of data click anywhere on the duplicate row and select Edit Delete Data Row After en
7. User s Guide The configuration file called CBRSMRY1 LFG can be used by selection Tools Data Summary and Export from the GDM or LD4 menu then selecting File Recall Existing Configuration and double clicking on CBRSMRY1 LFG If you ve purchased LD4 you can use CBRSMRY1 LFG to view an on screen list of the CBR tests performed for a project From the LD4 screen select Project gt Browse and choose CBRSMRY1 31 Printing Reports t 32 CBR User s Guide 6 Technical Specifications CBR strictly follows the ASTM D 1883 standard for all of its calculations AASHTO T193 and Virginia Test Method 008 test standards employ identical calculations with the exception of the values used for the standard loads The following sections cover the calculations performed by the software 6 4 Moisture Content Wc wo Wp E Wr where WC the water content in percent W the combined tare and moist soil weight gms W the combined tare and dry soil weight gms the tare weight gms 6 2 Dry Density Ws 453 59 um DD Wa MV 1 100 where DD dry density pcf W the weight of the sample gms 5 453 59 converts grams to pounds Du 1 in MV R 4 12 12 12 Bp where MV the test mold volume B the height of the sample in D the diameter of the mold assumed to be 6 in conve
8. on the hardcopy chart report discussed in Chapter 5 shaping point markers are not indicated To delete a shaping point 1 Select Curve Delete Shaping Point 2 Ifthe curve had just a single shaping point you re done Otherwise you ll need to indicate which point is to be deleted move the mouse cursor over the point to be removed then click the left mouse button You can return a curve to its original shape by selecting either Curve gt Delete All Shaping Points 24 CBR User s Guide 5 Printing Reports CBR plots two varieties of reports depicted in the following figures Fe Liebe HH e i i z if i 1 I z Framas morsiw Figure 4 1 1 CBR Testing Data Summary 25 Printing Reports BEARING RATIO TEST REPORT ASTA D 15F3 9 Biniki Mamei iol Pares Hes eres paar i Figure 4 1 2 CBR Chart Report These reports may be previewed on screen printed to a printer or exported into an Acrobat Reader PDF CAD DXF or word processor picture EMF file To preview the testing data summary right click on the CBR link at the bottom of your sample s data entry card from the Data Manager or LD4 screens see Section 2 7 in the GDM manual or Chapter 6 in the LD4 manual and select Summary Preview To preview the testing chart report you can either right click on the CBR link at the bottom of your sample s data entry card from the Data Ma
9. programs do not support TrueType files Layer name DXF files only Specifies the name of the CAD drawing layer on which your report will be drawn Layer names may be any combination of alphabetic and numeric characters however many CAD programs cannot handle layer names that include spaces MYLAYER is OK MY LAYER is not Since your chosen layer name will be repeated throughout the DXF report files the shorter you make the name the smaller in size your DXF files will become After selecting the desired export options click on the Output button to create the file s data summary reports will be exported as two files if you ve chosen the DXF or EMF file format 30 CBR User s Guide 5 2 Copying Reports to the Windows Clipboard If you re creating a word processing document which incorporates your CBR reports you can skip the process of exporting the report to a file then inserting the file as a picture into your word processing document instead open the CBR test and select Edit Copy Data This places a copy of the CBR chart report on the Windows clipboard To paste the report into your word processing document start the word processor open the document and select Edit Paste 5 3 Listing Results from Multiple CBR Tests CBR includes a sample data export summary configuration file that may be used with the Data Summary and Export tool discussed in Chapter 4 of the GDM manual and Appendix C of the 104
10. 1 2 1 Margins CBR features two printed reports one that summarizes your raw testing data in a tabular format the summary report shown in Figure 4 1 1 and a second that reports the program s calculated results and includes charts of penetration resistance vs penetration swell vs time and CBR vs density the chart report shown in Figure 4 1 2 You can change both report type s margins the whitespace between the sides of the page and the borders around the report by clicking on the Margins tab of the Setup dialog Options CBR Setup doing so displays a window similar to the one shown in Figure 1 2 2 CBR Setup x Settings Select margins for Chart Report Top fi 2 Left fi 2 05 Right 1 27 Bottom Afi aste s ane aie cm Figure 1 2 2 Report Margins Selection 4 CBR User s Guide Select margins for This drop down box selects for which of the two report types summary or chart the margin changes will apply Prior to entering new margins make sure that this box shows the appropriate report style Top Left Right and Bottom The measurement units that are used for the report margins inches or centimeters are determined by the Regional Options in your Windows Control Panel 1 3 Container Weight Database The program may be set up to keep a list of container IDs and weights this list is shared with other GEOSYSTEM programs such as the Moisture Density and Atterberg Limits modules
11. 15 Enter the following Number of blows Load ring constant The oad ring constant is a value used to relate dial readings to loads force load ring constant dial reading Press Enter twice after entering the load ring constant 16 Enter the first specimen s penetration test data Pt Dial Reading oo o Eg oo ii EN 2 2 Eg s 36 ra 4 46 Em s s 17 Now we ll enter data for the second test specimen Click on the Specimen 2 tab then enter the following moisture and density data Wet weight gms Dry weight gms Container ID leave blank Tare weight gms Wt mold soil Ibs 18 38 Dry weight gms Heightsoil in 4 58 18 Soak tests are optional you can enter swell data for one all or none of the CBR specimens We ll skip the test for specimen 2 press Enter until you reach the Number of blows field 19 Enter the following Number of blows 25 Load ring constant Press Enter twice after entering the load ring constant Walkthrough 20 Enter the second specimen s penetration test data Pt Penet Dial Reading EN 0o Oo 15 EN 1 EM 2 O 9 3 6 NEN 82 5 10 21 Now we ll enter data for the last test specimen Click on the Specimen 3 tab then enter the following moisture and density data Wet weight gms Dry weight gms Container ID leave blank
12. 2 2 1 CBR Sample Info 13 Data Entry 3 1 Sample Info CBR s initial data entry window shown in Figure 2 2 1 incorporates data entry fields covering basic information about the CBR test and the sample tested This window can also be reached by clicking on the Sample Info tab at the bottom of your screen The following data are requested Test Method CBR currently supports three testing methods ASTM D 1883 AASHTO T 193 and Virginia Test Method 008 VTM 008 The only substantial difference between the three procedures is in the standard stress values specified by each method refer to Section 6 5 for details Material Description By default CBR uses the material description that you entered into the Material Description field on the Data Manager screen that s the screen where you click on the CBR link However you can either override the default description or click on the link that reads Click here to select from a list of material descriptions this drops down a box listing all of the material descriptions entered into the current source folder Double click on one of the descriptions to select it Date Sampled Use any date format desired e g mm dd yy or dd mm yyyy USCS Classification If the GEOSYSTEM Soil Classifications package is licensed this value will be retrieved automatically as long as you enter the sample s classifications data before entering your CBR test data Liquid Limit and Plastic
13. 200 VTM 008 specifies only that a standard stress of 1000 psi be used A correction may be added to the penetration depth to compensate for any non linearity in the penetration curve see Section 3 2 1 An alternate CBR formula is utilized if a correction is to be included cor stress CBR 100 std stress Where cor stress stress at corrected penetration depth The corrected penetration depth is determined by adding the linearity correction to the penetration depth at which the CBR is to be calculated The corrected stress for the corrected penetration depth is determined by performing a linear interpolation between the dial reading at the nearest shallower penetration depth and the reading at the nearest deeper penetration depth 35 Technical Specifications Example CBR calculation with non linear correction CBR is desired at 0 1 in Non linearity correction 0 058 in Corrected penetration 0 158 in Load at corrected penetration 290 psi Standard load at 0 1 in penetration 1000 psi CBR at 0 1 in corrected for non linearity 6 6 Online Testing Sets If you have Internet Explorer version 6 0 or later or Mozilla 1 0 or later or Netscape 7 0 or later you can view examples of the test sets used to verify the program s calculations at http www geosystemsoftware com products cbrtesting These examples include extensive annotations documenting our manual verification of the program s re
14. 321 Sample S 4 Boring B 3 PDF P92321 being the project number by leaving the Base file name field blank you can get export files with names like Sample S 4 Boring B 3 PDF 29 Printing Reports Place files in Gives the directory where your exported PDF DXF or EMF file will be placed Report is scaled in Reports exported as DXF EMF or PDF measure either 10 units vertically when scaled in inches or 25 4 units vertically when scaled in centimeters This selection does not affect the report s appearance rather it affects the coordinates given to each line and piece of text on the report As such the selection is only important when the exported report is to be edited by an illustration or CAD program Binary DXF files only Binary DXF files are smaller by 25 to 50 percent and are read by AutoCAD faster however reports will appear the same when viewed in a CAD program no matter if this option is selected or not Note that few illustration programs will read binary DXF report files TrueType DXF files only If this option is unselected DXF report files use a monospaced font similar to this for everything on the form meaning that DXF reports are less attractive than their printed counterparts The TrueType option allows you to generate DXF files that look exactly like the printed versions however TrueType DXF files are only supported on AutoCAD versions 14 and newer additionally many other drawing and CAD
15. CBR CBRSMP2SRCHG test specimens CBRSMP3SRCHG CBRSMP1SOAKMOIST Average after soak moisture content for each of the three CBR CBRSMP2SOAKMOIST test specimens CBRSMP3SOAKMOIST CBRSMP1PCTCOMPAC Percent sample compaction following soak test CBRSMP2PCTCOMPAC CBRSMP3PCTCOMPAC CBRDESIGN CBR value at user specified percentage usually 95 of maximum dry density CBRSOAKMOIST Average after soak moisture for all three specimens combined CBRMAXSWELL Maximum swell percentage reached during all three soak tests DIDCBR Is initialized to Y for any samples for which CBR testing was performed can be used to count the number of CBR tests performed for a given project CBR_TEST_METHOD Test method employed e g ASTM D 1883 CBR_TEST_DESCRIPTION User entered notes regarding the testing method employed 37 Technical Specifications CBR TEST REMARKS User entered notes regarding the test 38 DXF EMF PDF WMF A AASHTO Acrobat Add sample number location Add Shaping Point ASTM Atterberg Limits AutoCAD B Base file name Binary blows C CAD CBR Penet CBR vs density See CAD See metafile See Acrobat See metafile See test method 1 12 26 27 30 28 12 29 11 24 See test method 6 14 See CAD 12 29 30 See Number of blows 1 12 26 27 30 11 23 1 3 5 11 19 23 maximum units Density precision description design CBR dimension units dry weight E English Excel Expo
16. GEOSYSTEM CBR California Bearing Ratio Module for GEOSYSTEM for Windows RATIO TEST REPOST ARTES TERT ALY ENGINEERS Copyright 2003 Von Gunten Engineering Software Inc 363 West Drake 10 Fort Collins CO 80526 www geosystemsoftware com Information in this document is subject to change without notice and does not represent a commitment on the part of Von Gunten Engineering Software Inc The software described in this document is furnished under a license agreement and the software may be used or copied only in accordance with the terms of that agreement The licensee may make copies of the software for backup purposes only No part of this manual may be reproduced in any form for purposes other than the licensee s personal use without the written consent of Von Gunten Engineering Software Inc Copyright Von Gunten Engineering Software Inc 2001 All rights reserved Published in the United States of America GEOSYSTEM is a registered trademark of VES Inc Windows is a registered trademark of Microsoft Corporation Terms of License Agreement 1 The Licensee agrees not to sell or otherwise distribute the program or the program documentation Each copy of the program is licensed only for use at a single address 2 The Licensee agrees not to hold Von Gunten Engineering Software Inc VES Inc liable for any harm damages claims losses or expenses arising out of any act or occurrence related in an
17. TEM web site Start Internet Explorer From Explorer select File gt Open then enter C NTESTO000 XML To import the file into Microsoft Excel you must have Excel XP or newer Start Excel and select 12 CBR User s Guide 3 Data Entry Data entry for CBR is begun by filling in a data entry card on the LD4 or Data Manager Screen 1 Create or open a project file see Sections 2 1 and 2 2 in the GDM manual or if you ve licensed LD4 Sections 2 3 and 2 4 in the LD4 User s Guide 2 Create or open a material source folder see Sections 2 5 and 2 9 in the GDM manual or Sections 2 7 1 and 2 7 2 in the LD4 User s Guide 3 Locate a data entry card for the sample and fill in the sample s identifying information see Section 2 6 in the GDM manual or Section 2 9 in the LD4 User s Guide 4 Click on the CBR link at the bottom of the sample s data entry card see Section 2 7 in the GDM manual or Section 6 1 in the User s Guide You should see a display similar to the one shown below GEOSYSTEM CBR 8 3 5 4 20 Poorly graded ndy gravel CBR Edit Options Window Help Test Method ASTM D 1883 99 Material Description Click here to select from a list of material descriptions Poorlu graded sandu grauel Date Sampled USCS Classification Liquid Limit Plasticity Index Test Description Preparation Method etc Tented Lk rr ple Info Specimen 1 Specimen 2 Specimen 3 CBR Curve Report Figure
18. ainer ID and the program will look up the associated weight To do this select Tare ID in this box then enter your list of container IDs and weights into the program s container database Options Container List see Section 1 3 for further details Surcharge units Selects the units reported for the surcharge weights CBR doesn t do anything with the surcharge values besides including them on the hardcopy reports but the units selected should match the data entered Penetration output units Selects the dimension units inches or mms used for printing penetration depths on the program s hardcopy chart report see Figure 4 1 2 including the penetration resistance vs penetration curve that is a part of that report Chart Report Options Selects whether the swell vs time and CBR vs density charts are included on the hardcopy chart report shown in Figure 4 1 2 Introduction Installation and Setup Prompt text color Sets the color of the data entry prompts shown on the Sample Info see Figure 2 2 1 and Specimen data entry windows see Figure 3 2 1 Click Set to select a color or Reset to restore the program s default color A note regarding units CBR determines whether you are entering metric or Imperial data based upon the Dimension Units setting in LD4 or GDM To change the unit selection use the Data Manager package to open the project in question then from the following screen select Project Dimension Units
19. as a file copy or for passing to clients who require access to the raw testing data Next select CBR Output Chart Report then at the following dialog click on the Output button This concludes the basic walkthrough If you re interested in exporting your data and reports several optional tutorials are presented on the following page 11 Walkthrough 2 1 Exporting Reports CBR can export the two reports you printed into a number of different file formats Adobe Acrobat PDF CAD DXF and Windows metafile If you have Acrobat Reader installed you can try exporting a PDF file by following these steps 1 Mog RF oO N Select CBR Output Chart Report Change Output to to read Adobe Acrobat PDF File Change Base file name to read TEST Uncheck Add sample number location to the file name Change Place files in to read c Click on the Output button Start Acrobat Reader and open the file c NPEST0000 PDF 2 2 Exporting Testing Data CBR also exports raw data in a file format called XML these files can be viewed by Internet Explorer version 6 0 and newer Netscape version 7 0 and newer and also by Microsoft Excel XP and newer If you d like to try this follow these instructions 1 2 Select CBR Export XML File At the following dialog enter C TESTO000 Make sure that your Internet connection is started Explorer will need to download a small formatting file from the GEOSYS
20. e Acrobat PDF File Windows Metafile L EMF or AutoCAD DXF File If you select one of the first two options you ll see the following dialog Print or Export Report x Output to PDF file Base file name TEST Add sample number location to the file name Place files in el Report is on letter sized paper C Report is on 4 paper s Figure 5 1 2 Acrobat and Metafile File Export Dialog DXF files are somewhat more complicated and have more options available Print or Export Report xj Output to Aeon DF file Base file name TEST Add sample number location to the file name Place files in gt Report is scaled in inches C Report is scaled in centimeters Binay ain LP ar newer may nof sunt sith nan 30 sates V TrueType da MD 74 newer nnl not sunt 66960 723023 fees poetas Layer name 7 CETT Figure 5 1 3 DXF File Export Dialog 28 CBR User s Guide There are a number of different options available for selecting where and how the reports are exported Base file name When the program creates a DXF PDF or EMF file of your report the file s name will start with whatever is entered into this field Add sample number location to the file name Without this option the names of the DXF PDF or EMF files created for exporting a report will be whateve
21. filled in if you have already been through other tutorials Walkthrough 10 Try entering the following information Test Method ASTM D 1883 99 Material Desc leave as is Date Sampled 11 23 2002 USCS Classification CL Liquid Limit 32 Plasticity Index 17 Test Description ASTM D1557 00 5 layers Testing Remarks Tested by ERK Checked by ALV Max Dry Density 111 3 Optimum Moist 16 9 Figure Number F 19 11 Click on the Specimen 1 tab to begin entering the actual CBR testing data 12 The top data entry fields on the screen determine the as molded moisture content and density for the first test specimen Enter the following information Wet weight gms Dry weight gms Container ID leave blank Tare weight gms Wt mold soil Ibs Dry weight gms Height soil in 4 58 13 Pressing Enter or Tab after typing the soil height will bring you to the soak test data grid Enter the following Pt Elapsed Time Dial Reading Pa 00 50 24 506 Eg 48 5 14 After entering the last swell reading press Enter twice then enter the following final moisture data Wet weight Dry weight Tare weight gms gms gms 256 3 CBR supports moisture tests for up to three sample sections We ll just enter one moisture content so press Enter twice after typing in the tare weight to jump to the penetration test data section of the screen CBR User s Guide
22. g enter the A factor load per dial division as the load ring constant this would be 5 in the above example Divide B by A and enter the negative of the result as the first load dial reading i e at penetration depth 0 In the above example the negative of Ais 10 so 10 is entered as the first dial reading Enter the rest of the readings normally Penetration depths Are entered in either inches or millimeters depending upon the current project s measurement units setting see the note at the bottom of page 4 Penetration dial readings Are entered as dial units If you missed entering a row of data you can enter it onto the first blank row of the readings grid or you can use the Edit Insert Data Row menu selection to insert the row in place f you ve accidentally duplicated a row of data click anywhere on the duplicate row and select Edit Delete Data Row 20 CBR User s Guide 3 2 4 Penetration Curve Linearity Correction Due to surface irregularities or other causes the initial portion of the stress vs penetration curve may be concave upward For these curves CBR test specifications indicate that a line should be drawn tangent to the steepest linear portion of the curve the intersection of this line with the penetration depth axis becomes the new O point for the curve i e corrected penetration depths are obtained by subtracting the actual depths from the new point In the on screen pe
23. ge units pounds 3 Penetration output units finches J Chart reports include the penetration chart an CBR vs density chart v Time vs swell chart Prompt text color D r De ns it Figure 1 2 1 CBR Configuration Dialog CBR User s Guide Density units Selects the units to be used for reporting calculated densities Also affects the CBR vs density chart shown in Figure 3 4 1 and incorporated in the program s hardcopy chart report displayed in Figure 4 1 2 Note the maximum dry density entered on the Sample Info window discussed in Chapter 3 should be entered in these units If you are using the GEOSYSTEM PROCTOR software this selection should be the same as PROCTOR s Density Units setting note that PROCTOR version 1 x does not automatically synchronize this setting with CBR so you need to manually change PROCTOR s setting to match CBR s Density precision Determines the precision to which densities are reported This selection changes depending upon the density units selected but for example rounding for densities reported in pcf can be to the nearest 1 nearest 5 or nearest whole number Mold weight is entered in Allows entry of either pounds or grams for the weight of the mold used for density determination Data entry requires CBR can be set up to keep a list of container IDs and associated weights when entering moisture content data instead of entering the container weight you can enter the cont
24. ield and may be left blank If entered the counts will be included as labels next to individual test points on the CBR vs density chart see for example Figure 3 4 1 Surcharge Is the surcharge weights placed on the specimen prior to loading This is an optional field the program does not use the value in any calculations but if entered the program will add it to the hardcopy chart report 19 Data Entry Load ring constant Older CBR machines measure loads using a compression ring fitted with a ring deformation gauge The number used to convert ring deformation gauge readings to force units is the Load Ring Constant LRC Its use is simple Force LRC Reading A typical calculation for a load ring with LRC 6 089 Ibs division at a reading of 23 units is Load 6 089 23 140 0 lbs Ifthe CBR machine uses a load cell and digital readout of forces enter 1 at the Load ring constant prompt Load Ax B type of load rings In cases where the 0 reading on the load ring dial is less than 0 that difference must be added to each test load dial reading before multiplying by the load ring constant LRC For example If load ring dial reads in 0 001 inches the load ring constant is 5 lbs per division 5000 Ibs inch and the load ring reads 0 01 10 divisions at 0 load in the equation Ax B A 5 B 50 and at 0 load the equation becomes load 5 10 50 0 which as expected To use CBR with this type of load rin
25. ing judgment and as such CBR will not adjust the line automatically you need to manually adjust the line for each penetration curve that exhibits upward concavity You should not be using the program if you do not understand how and why the correction is to be applied 3 3 Copying and Pasting Test Data If you need to enter a CBR test that is substantially identical to a test you ve already entered you can use the already entered test s data as a starting point for the new test To do this 1 Open the test you ve already entered and select Edit Copy Test 2 Startthe next test from the Data Manager screen enter the test s basic sample data sample number material description etc then click on the CBR link then select Edit gt Paste Test 3 4 Deleting a CBR Test To remove all of the data that you ve entered for a test refer to Section 2 8 in the GDM manual or Section 6 2 in the LD4 User s Guide 22 CBR User s Guide 4 Curve Viewing and Shaping After completing testing data entry you ll want to check the CBR vs density curve because data entry errors are often highlighted by a quick glance at the curve To show the curve click on the CBR Curve tab on the bottom of the screen or select Window CBR Curve or just press function key 6 B 34 5 6 20 Poorly 5 ndy gr v l BEE CBR Edit Curve Options Window Help t Add Shaping Po
26. int gt Delete Shaping Point Delete All Shaping Points Design Dens 101 7 Design CBR 34 7 CBR at 0 10 in Penetration Gudeys PLPN awe w 107 Molded Density Figure 3 4 1 Curve Preview Screen To change the penetration depth for which the CBR points are calculated click on a new depth in the CBR Penet box in the left hand toolbar The selection box looks like this C 23 Curve Viewing and Shaping The red dashed line shown on the curve represents the density for which the design CBR is calculated The design CBR density is some fraction of the sample s maximum density point as entered into the Sample Info window discussed in Section 3 1 the percentage is adjusted by selecting a new value from the Max Dens Percent selection box on the left hand toolbar Max Dens Percent The selection box looks like this The penetration and density units used on the chart are program options set through the program s Setup dialog Options gt CBR Setup discussed in Section 1 2 4 1 Curve Reshaping The curve may be reshaped by placing additional points for it to pass through To do this 1 Select Curve Add Shaping Point 2 Move the mouse to a point through which the curve is to pass 3 Click the left mouse button On screen shaping points are denoted by shaped markers When the CBR curve is included
27. ity Index These values are automatically retrieved from the GEOSYSTEM Atterberg Limits program LIMITS if it has been licensed and if Atterberg testing data are entered before entering the CBR test data Test Description Use this field to describe the CBR test for example enter the compaction test method e g ASTM D 698 or D 1557 number of compacted layers etc Testing Remarks Use this field to note any deviations from normal sample preparation and testing procedures as well as testing personnel etc 14 CBR User s Guide Maximum Dry Density If this value is entered the program will calculate and report a design CBR i e the sample s CBR value at a density equal to some specified percentage of the maximum dry density The percentage which is usually 9596 can be adjusted by changing the Max Dens Percent selector on the left hand Max Dens Percent toolbar the selector looks like this The density units used for entering this value pcf kg m3 etc are specified through the Density units selection in the program s configuration dialog Options CBR Setup If the GEOSYSTEM Moisture Density Test module PROCTOR is installed CBR will automatically fill this field in with the corrected maximum dry density value calculated by PROCTOR PROCTOR version 1 x must be set up so that its density units match those that CBR uses open PROCTOR select Setup and change the Density Units setting accordingly
28. nager Screen and select Report Preview or you can click on the Report tab at the bottom of the CBR data entry screen or select Window gt Report To print the data summary or chart report select either CBR Output Data Summary Report or CBR Output Chart Report then click on the Output button 26 CBR User s Guide 5 1 Exporting Reports to Files The testing data summary and chart reports depicted in Figure 4 1 1 and Figure 4 1 2 can be exported to files that may be posted to a web server or e mailed to clients To do this begin by selecting either CBR Output Data Summary Report or CBR Output Chart Report You should see the dialog shown below Print or Export Report uripa m Datsun Printer HUB HE Enni Seting Figure 5 1 1 Output Options Dialog Output to allows you to choose between sending your report to the printer and sending your report to a disk file in one of several formats Adobe Acrobat PDF PDF is a near universal format for Internet document distribution Viewing requires the Adobe Reader program that may be downloaded at no charge from Adobe s web site AutoCAD DXF DXF is designed for interchange among CAD programs Windows Metafile EMF EMF files may be inserted as a picture into a word processing document or manipulated with a vector drawing program such as Adobe Illustrator 27 Printing Reports Drop down the Output to box and select either Adob
29. netration curve display see Figure 3 2 4 the linearity correction line is represented by a red dashed line The program always chooses an initial location for this line so that it passes through the 0 stress 0 penetration point i e no correction is applied after entering your penetration test data if the curve is concave you need to adjust this line The correction line is moved by dragging either end of the line click your left mouse button with the mouse cursor near one end of the line then while holding the left button down drag the line to its new position GEOSYSTEM CBR B 34 5 140 5 Poorly graded sandy gravel CBR Edit Options Window Help Penetration test dat Number of 0835 292353 Drag here to Load ring adjust the yt y constant poo fos Ej correction line s BEES Sd in Reading right endpoint Note upward concavity Resistance psi 0 2 0 3 04 05 Penetration Depth in The red dashed lin Drag here to rection factor it should be tangent to the i Thisis not an automatic process adjust the diusted by dragging UNIS correction line s left endpoint Sample Info Specimen 1 Specimen 2 Specimen 3 CBR Curve Report Enter the dial reading Figure 3 2 4 Penetration Curve Linearity Correction 21 Data Entry Note This correction must be made in order for your testing reports to be valid This correction is an engineer
30. on program doesn t automatically start double click on your My Computer desktop icon navigate to your CD drive and double click on the SETUP program Introduction Installation and Setup If you have already licensed the GEOSYSTEM Drilling Log program or any other GEOSYSTEM Windows programs you must install CBR into the same hard disk or network subdirectory If you are installing the software onto a network server please refer to the Networks section in the LD4 manual or the Network Installation section in the Data Manager manual before proceeding with the installation f you re adding CBR to an existing GEOSYSTEM for Windows installation you can make sure that CBR was installed correctly by starting the GEOSYSTEM for Windows package CBR should be listed next to the Installed modules title on the right side of the opening screen 1 2 Configuring CBR CBR includes support for a few different testing and recording procedures before typing in your first test set you should make sure that the package is correctly configured To do this start up your GEOSYSTEM for Windows package refer to either the GDM or LD4 manuals for instructions then select Options gt CBR Setup which displays the following dialog CBR Setup E Fa W i Settings Report Margins Density units p Density precision nearest 0 1 Mold weight is entered in H Data entry requires Tare Weight Surchar
31. oth English and SI metric units with automatic unit conversion Utilizes the GEOSYSTEM Data Manager program GDM for file handling project information such as the project name and number is entered only once per project GDM can be used to create printed lists of all of the CBR tests performed for a given project Supports soak swell tests Interactive modification of the CBR vs density curve Printed summary lists all testing data and results Report export to EMF word processor picture DXF CAD and PDF Acrobat Reader files Since CBR utilizes the GEOSYTEM Data Manager program GDM or LD4 package for all file handling the user should review the GDM or LD4 manuals before proceeding 1 1 Installation By itself CBR is not a complete system the program must be installed into a hard disk or network subdirectory that already contains a copy of the Data Manager or LD4 Drilling Log packages To enter a new CBR test you must first use the Data Manager or LD4 package to open or create a project file If you haven t licensed the Drilling Log package LD4 CBR requires the GEOSYSTEM for Windows Data Manager GDM software version 2 or later A compatible version is automatically installed when you install CBR after installing you might want to check the GEOSYSTEM web site www geosystemsoftware com for any available updates Installing CBR is simple place the program s CD into a CD drive If the installati
32. r you have selected as the Base file name plus something like page 1 at the end For example if the Base file name is P92321 if the Add sample number location to the file name option was not checked the first PDF report file created would be named P92321 page 1 PDF the second report would be named P92321 page 2 PDF and on A client looking at a list of submitted PDF files would have no way of telling which file corresponds to which tested sample Checking the Add sample number location to the file name box alters how the program names the report files the sample number and or sampling location is added to the Base file name Using our previous example with the box checked the program would create for example PDF files named P92321 Sample S 4 Boring B 3 PDF P92321 Sample S 1 Test Pit TP 2 PDF etc With Base file name and Add sample number location to the file name you can come up with some useful file naming variations For example you could leave Add sample number location to the file name unchecked and enter the sample number location as part of the Base file name of course this means that when you export the next report you d have to change the Base file name to reflect the new sample number As another example if you have created a hard disk subdirectory just to hold PDF files from a certain project you may not need to include the project number as part of each PDF file name instead of being called for example P92
33. rt XML File exporting data reports F figure number final water content G GDM I 3 15 24 37 3 15 24 3 See material description 15 24 See units 33 See units See XML 12 See XML See Acrobat See Chart Report Figure Number 19 1 2 4 13 14 22 26 37 chart See CBR vs density swell vs time penetration sert Data Row 18 20 installation 1 2 resistance vs penetration chart report 3 5 11 15 16 19 24 25 31 Internet Explorer See XML Chart Report Figure Number 15 16 L classification See USCS color See Prompt text color Layer name 30 configuration See setup LD4 1 2 4 13 22 26 31 37 Container ID See container list LIMITS See Atterberg limits container list 3 6 17 liquid limit See Atterberg limits Copy Test 22 load cell 20 curve load ring constant 9 10 20 34 viewing and adjusting 23 24 M D magnify 11 Data entry requires 3 6 7 17 margins 5 6 Data Manager See GDM material description 14 22 data summary 11 Max Dens Percent 15 24 data summary and export tool 31 37 maximum dry density See density maximum data summary report 25 31 metafile 1 12 27 30 Date Sampled 8 14 metric See units Delete All Shaping Points 24 Microsoft Excel See XML Delete Data Row 18 20 Moisture after soaking See final water content Delete Shaping Point 24 moisture content 3 6 8 17 18 33 34 37 deleting data 22 moisture density See PROCTOR density 33 Mold weight 3 7 17 as molded 17 N ne
34. rts from ir to ft 12 E 12 33 Technical Specifications 6 3 Percent Swell and Soak Density Percent swell is calculated from a swell dial reading by the following method Sn Si 55 100 Ht Where ss percent swell S swell dial reading inches e initial dial reading inches Ht specimen height inches The test dry density is calculated using the specimen height and moisture content after soaking The same calculations are used as described in Section 6 2 6 4 Penetration Stress The conversion from penetration dial reading to stress is performed as follows _ On Di LRC L 3 sq in Where L load psi B dial reading D initial dial reading LRC Load Ring Constant see the load ring constant discussion on page 20 If the LRC is entered in Ibs in then the dial readings should be entered in inches whereas if the is entered in 165 001 in then the dial readings should be entered as the 001 inch units 34 CBR User s Guide 6 5 CBR Values The CBR value for a given depth of penetration is the stress applied at that depth divided by a standard stress stress CBR 100 std stress Standard stress values are constants that are determined by the penetration depth ASTM D 1883 standard values are as follows Mr inches 0 300 2300 0 500 2600 AASHTO T193 standard stress values are a aa inches 0
35. sults nimis aber der Pa nee sae 117 1229 lit dam dian retine te 3 places Lj J Gx IE dej SER 0 pe in wies fe ia t OL UR gal wt di pounds 437i 52 4717 7 wit iii pander ioe 203470 zz art denso at toll iind eu omit meld i mlumeien ft 5 viel deas 17 7 0 222100 7484 pen 13 2 pel dry detect Fa dy deis LG 00 0 pef Swell Lata Figure 6 6 1 Sample CBR Test Set with Annotations 36 CBR User s Guide 6 7 Values Available for Data Summaries For each entered test CBR calculates several different values that may be used on data summaries created by the GDM Data Summary and Export tool see Chapter 4 in the Data Manager manual or Appendix C in the LD4 User s Guide The following table lists the names and a short description of all the calculated values provided by CBR CBRSMP1CORR INCHES Linearity correction in inches for each of the three CBR test CBRSMP2CORR INCHES specimens CBRSMPSCORR INCHES CBRSMP1SWELL Maximum swell percentage obtained during soaking for each of CBRSMP2SWELL the three CBR test specimens CBRSMP3SWELL CBRSMP1BLOWS Blows per layer used to compact the three CBR test CBRSMP2BLOWS specimens This is an optional data entry field and may be left CBRSMP3BLOWS blank CBRSMP1SRCHG Surcharge weight used during testing of each of the three
36. tering soak test data you ll be asked to enter data for up to three after soak moisture tests performed on sections of the sample Again this procedure is optional you can enter only one or two tests or leave the section blank To leave a particular moisture content section blank simply press Enter while the data entry cursor is in the Wet weight gms field the program will skip directly to the next section 18 CBR User s Guide After entering or skipping the final water content test data the program will proceed to the penetration test section of the window shown below GEOSYSTEM CBR 8 3 5 140 5 Poorly graded ndy gravel CBR Edit Options Window Help Penetration test dat Number of blows Load ring constant Penet Dial CBR in Reading yt s a a E E a a c a a 0 2 0 3 0 4 05 Penetration Depth in The red dashed line presents the curve s comection factor it should de tangent to the inital steepest portion of the curve This is not an automatic process the line must be manually adjusted by dragging with the left mouse button either line end Sample Info J Specimen 1 Specimen 2 Specimen 3 CBR Curve Report Enter the dial reading Figure 3 2 3 Penetration Test Data Entry Number of blows Is the blows per layer used in compacting the specimen into the mold This is an optional f
37. th a range of as molded densities If you test a single specimen enter its data into the Specimen 1 window if three specimens are tested the data are entered into the Specimen 1 Specimen 2 and Specimen 3 windows Movement through the entry fields is by the Tab and Shift Tab keys Enter may also be used to jump from one field to the next 16 CBR User s Guide Initial moisture content Is the as molded moisture content f you have added a list of container IDs and weights to the program s container database you can enter a container ID and the program will fill in the containers weight see the Data entry requires option discussed in Section 1 2 as well as Section 1 3 Note that you can always skip the Container ID field and enter a tare weight instead even if you have enabled the option to enter container IDs Initial density Is the as molded density Note that the weights of the soil and mold may be entered in either grams or pounds depending upon the Mold weight is entered in setting on the program s Options dialog see Section 1 2 After entering the specimen s as molded data you ll be asked to enter data for a soak test as shown in Figure 3 2 2 Soak or swell tests are optional and may be performed for none one or all of the specimens GEOSYSTEM CBR B 34 SH 12 5 Light broven 54 ndy gravel Some 3 material CBR Edit Options Window Help Elapsed Dial time hrs in x 1 000 2 s 0 100 00
38. twork Number of blows Optimum Moisture Content options Output Chart Report Output Data Summary Report P Paste Test Place files in plasticity index preview PROCTOR Prompt text color R report previewing Report is scaled in S sample date Sample Info Select margins for setup shaping point 1 2 9 10 19 15 See setup 11 12 26 27 11 26 27 22 12 30 See Atterberg limits 11 26 3 6 15 4 11 30 See Date Sampled 3 4 7 13 14 24 5 2 6 24 SI See units Soak spreadsheet summary summary report surcharge swell swell vs time T tare weight test method TrueType U unit weight units USCS V Virginia Test Method VTM 008 W web browser wet weight word processor 2 zoom 1 8 17 18 37 See XML See data summary 5 3 19 See soak 3 5 33 1 14 33 35 30 See density 1 4 8 14 See test method See test method See XML 33 1 31 11 Index
39. y way to the use of the program 3 The program is warranted to fully perform the tasks described in the program documentation All results of the operation of the program are subject to the further engineering judgment prudence and study of the user 4 If the program does not perform as described VES Inc will replace the program or refund the fee paid in the licensing agreement at its option In no event will VES Inc be liable for any amount greater than the total of the license fee or fees paid by the licensee 5 One year of free consultation and updates is included with the program In subsequent years updates will be available for a fee at the user s option 1 INTRODUCTION INSTALLATION AND 1 pos INSTALLATION 1 1 2 CONFIGURING CBR r 2 MANOS massa shuyushun OR Doy vo Dom OR Dove ina 4 1 3 CONTAINER WEIGHT 5 2 WALKTHROUGH 7 21 EXPORTING REPORTS d ecco sot co ca eodd eo Gc defi d co dd cce 12 2 2 EXPORTING TESTING DATA Rc in ci buda dans 12 ENTRY u studet xaxa nie A A AAE 13 Gc SAMPLE INEO A ED AU III AD ND D DUE 14 3 2 CBR TESTING DATA ect dete tele al deietede nione 16 3 2 1 Penetration Curve Linearity Correction
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