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Technical Notes
Fire Resistance | Control Joints | Control Joint Slots | Sound Reduction | Compressive Strength | Weight Classifications | Integrally Colored CMU

Control Joint Slot

All of the units drawn in this Shapes and Sizes Directory are drawn without any control joint slots. Superlite manufactures a certain ratio of regular block to control joint block within a pallet of material. The general rules for the amount of control joint block manufactured with regular units are as follows;

6" wide block 1 control joint block for every 4 regular blocks
8" wide block 1 control joint block for every 3 regular blocks
10" wide block 1 control joint block for every 2 regular blocks
12" wide block 1 control joint block for every 2 regular blocks

All half block are manufactured with a control joint slot. The only exception to this is a split face one side one end, and a split face two sides one end. Superlite Block manufactures its units in this manner unless specified otherwise.