There is a single basic measurement selection that must be made for every LOGDRAFT project file: "US" or "SI" units.
- "US" units means that boring depth measurements have been taken in feet. Sampler length measurements may be taken in feet or inches, depending upon how the report forms to be used with the project have been configured.
- "SI" units means that boring depths measurements have been taken in meters. Sampler length measurements may be taken in meters or centimeters, again depending upon how the report forms to be used with the project have been configured.
- Most LOGDRAFT report forms are set up to accept data in only one type of units. For example, columns on a given report form's subsurface table may be labeled "pcf", "feet", etc., meaning that, although the program will happily place metric data in these columns, the labels at the top of the columns will not reflect the units used for the data printed inside the columns.
When you start entering data for a new project, make sure that your data's units match the units that will be required by the report form to be used to print your logs: If the units are different, you'll need to either a) manually convert your data to the units required by the report form you'll be using or b) modify the report form to match your data. (You can learn how to modify report forms by reading through the Customization Guide.)
Note: One other option is available when dealing with mismatched units: Report forms may be set up to automatically convert units. For instance, depths may be automatically converted from feet to meters by the report, densities may be converted from pcf to kg/cm2, etc. See the Customization Guide for details.
Once you've opened a project, the units attached to the project are shown in the lower-right corner of the screen .
If the wrong units were selected:
- Choose Project > Dimension Units. This displays the Project File Dimension Units dialog.
- Select the appropriate units for the project.
- The stationing information box allows you to choose a different measurement system to be used for any station numbers you enter into the project -- this is useful if, for example, you've taken your drilling data in US units but you've been given the boring locations as metric station numbers. (See the section on station numbers for a discussion of how LOGDRAFT uses station numbers when plotting profiles.)