Void space
Broken slabs, long lumber, rolled carpet, and hollow cabinets create different air space in the same outside container volume.
Menu
Material measurement index
Use the unit the material gives you.
A cubic yard is not equally informative for every debris stream. Concrete begins with solid dimensions; drywall begins with face area; roofing with squares and layers; carpet with installed area and roll plan; mixed debris with composition before volume.
01 / MEASUREMENT MATRIX
Material, native unit, and uncertainty.
02 / WHY DENSITY TABLES DISAGREE
Solid material and loose debris are different objects.
Processing
Stacked, broken, crushed, chipped, compacted, and bagged forms change bulk density without changing material identity.
Moisture
Wet gypsum, carpet, wood, insulation, roofing, and fines can add weight that dry reference factors do not represent.
Contamination
Soil, mortar, coatings, trash, fixtures, and hidden heavy pieces change weight and the receiving classification.
SOURCE DISCIPLINE
Use the factor for the question it answered.
CalRecycle’s characterization study reports observed loose-load density factors. FHWA reports normal-weight concrete as a solid material. USG publishes nominal weights for named new panels. None is a universal truck-load predictor.
- 01CalRecycleStudy ↗
Observed C&D composition and bulk-density factors by material.
- 02Federal Highway AdministrationSource ↗
Typical solid normal-weight concrete density range.
- 03USGProduct data ↗
Named-product nominal panel weights for drywall baselines.
START WITH THE SCOPE
Material. Access.
Quantity. Timing.
Those four facts make the first conversation useful—and make unsupported price promises unnecessary.