One of the chief purposes of a boring log report is listing the samples taken during drilling and how they were taken. This information is entered onto the tabulated subsurface section of the LOGDRAFT data entry screen (shown in this figure) along with your material descriptions, depths, etc.
Since every subsurface sample is taken at a specific depth, the data entry process for sampling data begins by entering the depth of the top of the sampling interval: if you already have a data entry card with that depth on it, use it; otherwise, use a blank data entry card. (This section gives some basic guidelines on how the program expects your depths to be entered.) Once you've entered the depth, on the same card enter the information on the sample (the sample type, length, testing information, etc.).
It is not necessary to use another card to enter the depth at the end of the sample -- when necessary, LOGDRAFT will deduce the end of the sampling interval by adding the length of the sample to the top depth for the sample.
- If your data entry form includes a field for entering sampling lengths, be sure to enter the lengths in units appropriate for the measurement system that you've chosen for your project: For SI units, enter your sampling intervals in either meters or centimeters; for US units, enter your sampling intervals in feet or inches.
Once you've determined that the project measurement system is in US units you still need to figure out whether you need to enter the sample lengths feet or inches -- the prompt next to the sampling length data entry field should indicate which to enter (usually it says something like Sample length (in. or cm.)). - Many data entry forms also include a field for choosing a symbolic representation for the type of sampler used -- this field is usually labeled Sample Type and is followed by a small button. Clicking on the button displays a dialog listing all of the different sampler types that the program supports.
Sampler Symbol Selection Dialog
- Choose a symbol type from the dialog by double-clicking on it.
The descriptions shown next to each symbol are also printed if the sample is shown on a legend report -- to change these descriptions, see this section.
- You can also select a sampler type without displaying the dialog: The left-hand column of the list of sample types gives a key for each type -- you can enter this key into the Sample Type data entry field.