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IN <br /> IN <br /> 4 IN <br /> the event the indicated inaccuracy is sufficient to seriously affect the mixture , the Engineer may <br /> require immediate shut-down until the accuracy of the scales has been checked and necessary <br /> corrections have been made . Include the cost of all scale checks in the bid price for asphalt <br /> concrete , at no additional cost to the Department. <br /> 320- 2 .2 .4 .2 . For Electronic Weigh Systems on Hoppers Beneath a <br /> Surge or Storage Bins and Automatic Batch Plants with Printout : 1 <br /> (a) The Engineer will randomly select a loaded truck of asphalt <br /> mix and record the truck number, and the net weight of the asphalt mix from the Contractor ' s <br /> delivery ticket . <br /> (b) Weigh the selected truck on a certified truck scale , which is not <br /> owned by the Contractor and record the gross weight for the comparison check. If another <br /> certified truck scale is not available, the Engineer may permit another set of certified truck scales <br /> owned by the Contractor to be used. The Engineer may elect to witness the scale check. <br /> (c) Deliver the asphalt mix to the project, then weigh the selected <br /> empty truck on the same certified truck scales . Record the tare weight of the truck. <br /> (d) Compare the net weight of the asphalt mix from the delivery <br /> ticket to the calculated net weight of the asphalt mix as determined by the certified truck scale <br /> weights . The maximum permissible deviation is 8 pounds per ton of load, based on the certified <br /> truck scale weight. <br /> (e) Use the fuel adjustment as specified in 320 -2 . 2 . 4 . 1 (d) , when the <br /> distance from the asphalt plant to the nearest certified truck scale is enough for fuel consumption <br /> to affect the accuracy of the comparison checks . <br /> (f) During production, when an additional certified truck scale is <br /> not available for comparison checks , the Engineer may permit the Contractor to load a truck with <br /> aggregate from the pugmill, surge or storage bin, and follow the above procedures to conduct the <br /> comparison checks as soon as certified truck scale is available . <br /> If the check shows a greater difference than the tolerance specified <br /> above , then recheck on a second set of certified scales . If the check and recheck indicate that the <br /> printed weight is out of tolerance , have a certified scale technician check the electronic weigh <br /> system and certify the accuracy of the printer . While the system is out of tolerance and before its <br /> adjustment, the Engineer may allow the Contractor to continue production only if provisions are <br /> made to use a set of certified truck scales to determine the truck weights . <br /> SUBARTICLE 320- 5 . 1 . 2 (Page 246) is deleted and the following substituted : <br /> 320-5 . 1 .2 Automatic Screed Control . For all asphalt courses , placed with <br /> mechanical spreading and finishing equipment, equip the paving machine with automatic <br /> longitudinal screed controls of either the skid type , traveling stringline type , or non-contact <br /> averaging ski type . Ensure that the length of the skid, traveling stringline , or non-contact <br /> averaging ski is at least 25 feet. On the final layer of base , overbuild, and structural courses , and <br /> for friction courses , use the joint matcher in lieu of the skid, traveling stringline , or non -contact <br /> averaging ski on all passes after the initial pass . Furnish a paving machine equipped with <br /> electronic cross slope controls . <br /> - 63 - <br /> FPID (S ) : 423186 - 1 - 58 - 01 <br /> IN <br /> NINA <br /> � , IN <br />