Trinity Contractors, Inc 3/1/2017

1 • When using any RAP or any RAS, to eliminate oversize RAP or I 2 RAS particles from entering the pug mill or drum mixer. 3 I 4 5-04.3(3)B Hauling Equipment 5 Provide HMA hauling equipment with tight, clean, smooth metal beds and a 6 cover of canvas or other suitable material of sufficient size to protect the HMA I 7 from adverse weather. Securely attach the cover to protect the HMA whenever 8 the weather conditions during the work shift include, or are forecast to include, 9 precipitation or an air temperature less than 45°F. I 10 11 Prevent HMA from adhering to the hauling equipment. Spray metal beds with 12 an environmentally benign release agent. Drain excess release agent prior to 13 filling hauling equipment with HMA. Do not use petroleum derivatives or other 14 coating material that contaminate or alter the characteristics of the HMA. For 15 hopper trucks, operate the conveyer during the process of applying the release 16 agent. I 17 18 5-04.3(3)C Pavers 19 Use self-contained, power-propelled pavers provided with an internally heated I 20 vibratory screed that is capable of spreading and finishing courses of HMA in 21 lane widths required by the paving section shown in the Plans. 22 I 23 When requested by the Engineer, provide written certification that the paver is 24 equipped with the most current equipment available from the manufacturer for 25 the prevention of segregation of the coarse aggregate particles. The I 26 certification shall list the make, model, and year of the paver and any 27 equipment that has been retrofitted to the paver. 28 I 29 Operate the screed in accordance with the manufacturer's recommendations 30 and in a manner to produce a finished surface of the required evenness and 31 texture without tearing, shoving, segregating, or gouging the mixture. Provide 32 a copy of the manufacturer's recommendations upon request by the I 33 Contracting Agency. Extensions to the screed will be allowed provided they 34 produce the same results, including ride, density, and surface texture as 35 obtained by the primary screed. In the Travelled Way do not use extensions I 36 without both augers and an internally heated vibratory screed. 37 38 Equip the paver with automatic screed controls and sensors for either or both I 39 sides of the paver. The controls shall be capable of sensing grade from an 40 outside reference line, sensing the transverse slope of the screed, and 41 providing automatic signals that operate the screed to maintain the desired I 42 grade and transverse slope. Construct the sensor so it will operate from a 43 reference line or a mat referencing device. The transverse slope controller 44 shall be capable of maintaining the screed at the desired slope within plus or I 45 minus 0.1 percent. 46 47 Equip the paver with automatic feeder controls, properly adjusted to maintain a 48 uniform depth of material ahead of the screed. I 49 50 Manual operation of the screed is permitted in the construction of irregularly 51 shaped and minor areas. These areas include, but are not limited to, gore I 52 areas, road approaches, tapers and left-turn channelizations. I AMENDMENTS TO THE 2016 STANDARD SPECIFICATIONS BOOK I Revised: 8/1/16