what is a specified dimension
Dimensions and Sizes for CMU Three terms are used in referring to dimensions: specified,actual, and nominal. Specified dimensions are those specified for the manufactureof masonry units or the construction of masonry. Designcalculations are based on specified dimensions. Concretemasonry unit (cmu) specified dimensions compensate for a 3/8(0.375) inch joint for precision and split face cmu, and a 1/2-inch (0.5) joint for Slumpstoneâ¢.