Construction waste is not talked about much (or at all) in the general public. That dumpster on site gets filled and emptied on a regular basis. Some is sent to a landfill and some gets recycled for a future use.
Construction waste consists of those materials at a job site that cannot be easily used on that site. Small cuts of wood that are left over, tree stumps, rubble, drywall cuts, and damaged materials all go into the dumpster.
Construction waste can be diverted from the landfill through proper planning and waste can be reduced through design.
