Scale Operation

  1. The Contractor shall provide certified weights or weigh Material on calibrated, approves scales. The Contractor shall give the Engineer a copy of the inspection certificate.
          • Verify the scale certification is current.
  2. The Contractor may use computerized loader bucket scales when the quantity of material used in the bid item list is 5000 tons or less.
          • The Contractor shall equip loader bucket scales with an onboard computer that produces weigh tickets.
          • The Contractor shall load trucks on a level loading area and with the loader scale in dynamic mode and operate the loader scale in accordance with the manufacturer’s guidelines.
          • The computerized loader bucket scale must be accurate to within 1.0 percent of the true weight of the applied load throughout the range of use.
          • Before the first use of scales on a Project, the Contractor shall calibrate in accordance with 1901.8; if using a loader scale, before use or any time the scale is recertified, the Contractor shall perform a comparison test in accordance with 1901.8.
  3. Review “Uniform Load Establishment and Method of Quantity Verification” section 3.1.1.5.1 of Contract Administration Manual (CAM) and Uniform Load Documentation – Spot Checks section 3.1.1.5.2 of the CAM.
  4. If truck loads observed are suspected to be overweight inform your chief inspector and/or Project Engineer immediately.

References: Specifications 1513, and 1901.8., and the Contract Administration Manual