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From page 117... ... 117 One of the major problems with analyzing erodibility parameters is that these parameters are derived from different types of tests and are not consistent with one another. While bringing some uniformity to tests results is important, as discussed in Chapter 6, it is equally important to collect existing erodibility data obtained from each test. Read the entire page →
From page 118... ... 118 Relationship Between Erodibility and Properties of Soils No. Contact Person Organization No. Read the entire page →
From page 119... ... Organization and Interpretation of the Data 119 device. Figure 79 is a summary chart of the data compiled for NCHRP-Erosion since the start of the project. Read the entire page →
From page 120... ... 120 Relationship Between Erodibility and Properties of Soils points of the erosion curve is extrapolated linearly and the point at which this extrapolated line crosses the horizontal axis is selected as the critical shear stress value. Figure 80 shows an example of how the critical shear stress is calculated for a case where the line has to be extended to cross the horizontal axis. Read the entire page →
From page 121... ... Organization and Interpretation of the Data 121 how EC is determined. EC for this particular example was obtained as 2.25. Read the entire page →
From page 122... ... 122 Relationship Between Erodibility and Properties of Soils interpretation of the results. Also, a column for general comments about the sample provides related special information about the sample, if applicable. Read the entire page →
From page 123... ... Part 1: Record Info. Part 2: Erosion Info. Read the entire page →
From page 124... ... 124 Relationship Between Erodibility and Properties of Soils Record Number Contact / Credit Date Conducted / Sampled Project Title / Sponsor Sample Name Sample Depth Soil Type USCS Classification AASHTO Classification Natural / Man-made 786 Jean Louis Briaud / TAMU, US 1/17/2017 NCHRP 24-43 B-12-16 (18'-20.5') Read the entire page →
From page 125... ... Organization and Interpretation of the Data 125 while the EFA can generate all five. Finally, the last column in Part 2, "Remarks on Erosion Test," presents any special treatment or necessary comment regarding the test. Read the entire page →
From page 126... ... 126 Relationship Between Erodibility and Properties of Soils authors are, the organization that performed the research, and the organization for which the spreadsheet was developed. This sheet also includes the responses to three basic questions: • What is NCHRP-Erosion? Read the entire page →
From page 127... ... Organization and Interpretation of the Data 127 original test data used to plot the erosion functions for each erosion test. Each of these sheets is named in the format of a three-word title that consists of the abbreviated or summarized project name, the contact organization, and the erosion test type. Read the entire page →
From page 128... ... NCHRP-Erosion NCHRP-Erosion NCHRP-Erosion Version Beta 1.0 Figure 88. Image of a small part of NCHRP-Erosion that focuses on the embedded sheets. Read the entire page →
From page 129... ... Organization and Interpretation of the Data 129 As shown in Figure 89, the bottom-right corner of each column's header shows a small arrow that can be expanded by clicking on it. After clicking on the arrow, the list of choices that the user can select from is shown. Read the entire page →
From page 130... ... NCHRP-Erosion Version Beta 1.0 Figure 89. Filtering the data with regard to contact person/organization. Read the entire page →
From page 131... ... NCHRP-Erosion Version Beta 1.0 Figure 90. Filtering the data with regard to the soil type. Read the entire page →
From page 132... ... NCHRP-Erosion Version Beta 1.0 Figure 91. Filtering the data with regard to the USCS. Read the entire page →
From page 133... ... NCHRP-Erosion Version Beta 1.0 Figure 92. Filtering the data with regard to the USCS. Read the entire page →
From page 134... ... NCHRP-Erosion Version Beta 1.0 Figure 93. Clearing the filters. Read the entire page →
From page 135... ... NCHRP-Erosion Version Beta 1.0 Figure 94. Filtering the data with regard to erosion test type. Read the entire page →
From page 136... ... Figure 95. Filtering data with regard to the liquid limit. Read the entire page →
From page 137... ... Organization and Interpretation of the Data 137 Figure 96. Custom AutoFilter window in Microsoft Excel. Read the entire page →

From page 117...

... 117 One of the major problems with analyzing erodibility parameters is that these parameters are derived from different types of tests and are not consistent with one another. While bringing some uniformity to tests results is important, as discussed in Chapter 6, it is equally important to collect existing erodibility data obtained from each test.