What does AFG mean in UNCLASSIFIED

AFG stands for Above Finished Grade, which is the average elevation of the highest surface finish, such as a carpet or hardwood floor, and typically measured from the exterior grade.

An AFG measurement is taken by taking a survey line through various points around the building to determine what the average elevation of the finished surface should be in comparison to the outside grade level. This measurement can be taken with laser rangefinders or Pacific surveying rods.

Common applications for AFG measurements include determining proper water drainage away from a structure or assessing land slopes and changes to them due to construction activities. It can also be used when calculating underground utility depths, making sure that they are not too shallow or too deep in relation to finished grade levels.

The accuracy of your AFG measurements will depend on how much precision you need from them. Generally, accuracy down to 1-2 cm should be sufficient for most uses, although more precision may be needed depending on your specific requirements.

Yes, it is important to take into consideration any natural slope that exists in order to get an accurate measure of the finished grade elevation relative to its surroundings. If there are any existing grading plans that could affect your calculations then these should also be considered prior to taking your survey line levels.

Yes, it’s important to make sure all necessary safety equipment and protective measures are in place prior to beginning the process of recording your measure points around a structure or site area. Additionally, you may wish to use waterproof material markers so as not disturb underlying soils and know where each point was first recorded precisely if you need reference later on.

Yes and no; you can certainly gather up the equipment necessary and collect all relevant data yourself but whether this will produce reliable results depends heavily on both experience and skill level as far as understanding potential pitfalls along with fully understanding accuracy levels required as well as being able maintain consistent focus throughout entire process—unless highly confident in abilities then having a qualified personnel conduct survey may prove wiser decision overall in many cases.

Depending on size and scope of project factors such as weather (i.e., rain), terrain type (flat vs hilly), amount of vegetation present (trees/bushes) etc can affect duration of process—generally at least one full day is what you would expect from most surveying companies though could vary even beyond this number based off all mentioned factors before hand.

Surveying companies typically employ mobile mapping technologies including GNSS (Global Navigation Satellite System), total station mapping hardware/software tools alongside aerial imagery associated with drone surveys when delivering GFGs results back digitally either via cloud based services or USB drives etc.