User Manual

Table Of Contents
Geophysical Survey Systems, Inc. StructureScan™ Mini XT
Manual
MN 70-813 Rev C 46
Cinder Block/CMU
The Mini XT is an effective tool for non-destructively checking for proper CMU construction. The data at
the right was collected by running the Mini XT horizontally along a course of CMUs. The Mark button
was pushed each time the center of the Mini XT (side laser) crossed the joint between two adjacent
blocks. The marks show up on the right as the vertical red dotted lines. Between each pair of marks is one
block.
Each CMU has two open cells. Those show as the large black areas near the top of the image. Blocks with
two empty cells have a pair or black areas between the marks. Filled cells do not have a black area since
the fill material is close in dielectric to the block itself, and thus no reflection is produced. Each of the
filled cells has a rebar as reinforcement. Those show as the hyperbolas in the filled cells.
Empty cells
Filled cell
Rebar