Low-Voltage Cable Footage and Box Count
Cable footage and pull-box count for a drop count: total = drops x (average run + slack); boxes = ceil(total / box length). 48 drops at a 120 ft average run plus 15 ft of slack is 6,480 ft - 7 thousand-foot boxes; a denser 100-drop job at a shorter 90 ft run is 10,500 ft and 11 boxes. The slack covers service loops and rack dressing; each run's length is limited separately by structured-cabling-channel. Cable is bought by the box.
Formula and source
total_ft = drops x (avg_run_ft + slack_ft); boxes = ceil(total_ft / box_ft).
Low-voltage cable footage takeoff identity by name (drops x per-drop length; boxes from total / box); first-principles count arithmetic.
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