TM 5-623
Figure B-11. Low-severity block cracking.
M-Blocks are defined by medium*-severity cracks (fig B-12 and B-13).
Figure B-12. Medium-severity block cracking.
Figure B-13. Medium-severity block cracking.
H-Blocks are defined by high*-severity cracks (fig B-14).
Figure B-14. High-severity block cracking.
*See definition of longitudinal and transverse cracking.
B-6
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