"This is to certify that the (truck/asphalt/plant/concrete plant/etc.) scales used on this project were calibrated/tested by (name of commercial scale company) on (date) and a copy of the inspection report is attached hereto."
Some materials may be weighed on commercial scales not generally subject to AHTD inspection, but subject to inspection by the State Bureau of Standards (For example, lime for seeding is frequently weighed on commercial scales at a farmer's cooperative.) In such cases, and when a copy of the certification is not available, a statement shall be made to the effect that the material was weighed on (location) scales and that these scales were certified by the State Bureau of Standards.
(b) Automatic Printing. Scales used for weighing pay items (truck scales and batch plant scales) are required to be an automatic weighing system (i.e., weights will be recorded ONLY when the scales are balanced) and must be equipped with an automatic ticket printer. The automatic ticket printer must print at least the following information on the ticket: Unique ticket number. (This may be preprinted on the ticket.) Gross, Tare, and Net weights. (The NET weight should be calculated by the weighing and ticket printing system; however, it may be calculated manually and keyed in for printing.) Truck ID. Current Date. For Asphalt mixes, the time of loading.
In addition, the following information shall be shown on the tickets: Identification of the Job. Identification of the material.
When the net weight is determined by batch weights, the scales used shall meet all the other requirements specified for truck scales except that the gross and tare weights will not be required.
Overweight loads will not be permitted. The Resident Engineer is not authorized to allow a tolerance. See Construction Memo 93-5 for additional information on overweight loads.
109.09 Calibration of Asphalt Distributors and Storage Tanks. Each asphalt distributor and storage tank used must be calibrated either by an Engineer of the Arkansas State Highway and Transportation Department, another State Department of Transportation, or by the manufacturer before being used on any work.
If the distributor or tank has not been calibrated by a another DOT, or the manufacturer when it arrives on the project, it
and provide a description of
Department Engineer, is the responsibility of the distributor or tank contractor is required
provide all equipment and personnel needed for the calibration. Distributors or tanks used on metric projects must be calibrated in metric units.