Masonry Coursing and Course-Out Check
How many courses reach a height and whether that height lands on a module: course = unit + bed joint (CMU 8 in, three brick courses 8 in), courses = round(target / course), and a course-out flag when the wall top or opening is off-module and forces a cut course or fattened joints. Nominal dimensions; the product and the mason's joint govern - a layout aid, not a stamped elevation.
Formula and source
course_in = unit_in + joint_in; courses = round(target_in / course_in); built_in = courses x course_in; off_in = target_in - built_in; on_module = |off_in| < 0.0625.
First-principles coursing relation with the Brick Industry Association (BIA) Technical Notes on modular masonry and the NCMA TEK dimensioning references (by name).
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