From NCMA eNews
November 7, 2019
NCMA’s TEK Note on the empirical method for control joint locations has recently been updated to reflect new provisions for control joint spacing for reduced height CMU. For assemblies using 4 inch nominal height CMU, new recommendation limit the maximum spacing of control joints to 1.5 times the wall height, with a maximum spacing of 20 feet.
Check out the updated version of TEK Note 10-02D here.