X9 Scanner VS D-Meter Floor Flatness & Levelness, ASTM E1155

Comparing a Trimble X9 Laser Scanner with FieldLink to a standard Type 2 device, D-Meter, for a ASTM E1155 Floor Flatness and Levelness report. See how the test was performed and compare the results.
With FieldLink and the X9, get results in minutes before the testing company shows up.
D-Meter 52.5 (49.6-55.3), 59.9 (56.4-63.5)
X9 49.2 (38-56.5), 59.9 (53.1-70)
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[@JSSTyger]

How should I lay out runs if the slab boundary is curved? Lets say it is a circular area. I have normally seen that the runs should be perpendicular to the boundary (assuming a rectangle) and also parallel. Not sure how this works on a circle.

[@ConnectedConstructionTech]

I would refer to the standard but imagine across the diameter 2' short on both ends of the edge. Then perpendicular line of the same length. Then just do shorter cords that are well distributed and perpendicular.

[@JSSTyger]

@@ConnectedConstructionTech Thanks. Im doing a new high school with rooms of all shapes and sizes. Much appreciated.

[@ConnectedConstructionTech]

@@JSSTyger I would suggest scanning with the X7 right after finishing. That way you can rerun the report to meet standards. If you do it with dipstick or d meter, you're stuck.

[@JSSTyger]

@@ConnectedConstructionTech I use an Axiom Type 2 meter (made by SMG). Very slow process...12 inches at a time.

[@makatogonzo]

What's the performance in a vibrating environment like a mill?

[@ConnectedConstructionTech]

You can turn off the self-leveling to collect data. Obviously that and the movement will mean the accuracy is affected. It is usually a good idea to put damping pads down to reduce movement.