DeFelsko PosiTector CMM IS Mode D'emploi page 8

Step 1c (PosiTector App only). If desired, insert a picture or
blueprint of the area to be measured. Use the
photo of the blueprint, or use the
the photo gallery. This background image will make it easy to
locate each probe within the area.
Step 1d (PosiTector App only). Press the (+) icon at the bottom
right of the Project screen and then touch the screen in the
desired location to place the hole. The new hole location will be
overlayed on the image and will be identified as a circle containing
--- 0. Repeat this for each measurement location within the Area.
Create additional Areas as required.
Step 2 – Drill the Hole
ASTM F2170 sets out strict requirements for hole depth and
diameter. Using a rotary hammer drill with a carbide-tipped
masonry drill bit (¾" diameter), drill the hole to the required depth.
Do not use water for cooling or lubrication.
Hole depth requirements according to ASTM F2170:
n
Concrete slab drying from one side only:
40% depth from top of slab
n
Concrete slab drying from two sides:
20% depth from the top of the slab
to insert an image from
7
to take a