Roll-Off Dumpster / Haul Count
Turns a demolition debris volume and weight into a haul count, where either the box volume or the weight cap governs: by volume = ceil(cy / (box x fill)); by weight = ceil(tons / cap); hauls = max. 60 cy of debris fills 3 boxes by volume, but at 45 tons the 8-ton cap forces 6 hauls - for heavy concrete debris the weight always wins. Lighter 12-ton debris governs by volume at 3. The hauler's container size and weight cap govern; overweight boxes are a haul-back.
Formula and source
by_vol = ceil(debris_cy / (container_cy x fill_efficiency)); by_wt = ceil(debris_tons / weight_cap_tons); hauls = max(by_vol, by_wt).
Roll-off haul-count identity by name (the greater of the volume-limited and weight-limited counts); first-principles governing-constraint arithmetic.
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