The phrase identifies a tool, either physical or digital, designed to estimate the quantity of masonry units needed to construct a paved outdoor area. This tool typically requires the user to input dimensions of the area, the size of the individual units, and desired spacing between them. For instance, a user might enter a patio area of 10 feet by 12 feet, brick dimensions of 4 inches by 8 inches, and a 1/2 inch joint spacing to determine the total brick requirement.
Accurate estimation of materials yields several benefits. Primarily, it minimizes material waste, reducing project costs and promoting environmental sustainability. Furthermore, precise calculation prevents project delays caused by insufficient material supply, streamlining the construction process. Historically, such estimations were performed manually, leading to potential errors and inefficiencies. Modern tools offer increased accuracy and convenience.