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Impact Echo Test Grid

Impact Echo Test Grid

Impact Echo Test Grid

(OP)
We are looking to use an impact echo method to check an existing slab for thickness, as well as cracks and voids. The idea was to set up a grid, an analyze each grid center. Is there anywhere that states what size grid is recommended for this type of application? I was thinking 1ft x 1ft grids for a 160 sq ft area.

RE: Impact Echo Test Grid

Looking for voids I usually move along a line in rows of 4 to 6 feet apart and use a hammer bouncing along in large arcs swung back and forth as I move along the line.

RE: Impact Echo Test Grid

ccl220:

For an approx 13'x13' area I think that a 1' grid is appropriate for IE.

Not sure if there is a stated recommended grid spacing. Maybe check ASTM or ACI, they may have some guidance.

RE: Impact Echo Test Grid

(OP)
Thank you for your responses. Manufacturer of impact echo also agreed with the 1 ft grid.

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