Granite Construction 5/14/2020 - Laserfiche WebLink

I 1 When used, the MTDN shall mix the HMA after delivery by the hauling equipment and prior 2 to laydown by the paving machine. Mixing of the HMA shall be sufficient to obtain a uniform 3 temperature throughout the mixture. If a windrow elevator is used, the length of the windrow 4 may be limited in urban areas or through intersections, at the discretion of the Engineer. 5 I 6 To be approved for use, an MTV: 7 8 1. Shall be self-propelled vehicle, separate from the hauling vehicle or paver. 9 2. Shall not be connected to the hauling vehicle or paver. 10 3. May accept HMA directly from the haul vehicle or pick up HMA from a windrow. I 11 4. Shall mix the HMA after delivery by the hauling equipment and prior to placement 12 into the paving machine. 13 5. Shall mix the HMA sufficiently to obtain a uniform temperature throughout the I 14 mixture. 15 16 To be approved for use, an MTD: 17 18 1. Shall be positively connected to the paver. I 19 2. May accept HMA directly from the haul vehicle or pick up HMA from a windrow. 20 3. Shall mix the HMA after delivery by the hauling equipment and prior to placement 21 into the paving machine. 22 4. Shall mix the HMA sufficiently to obtain a uniform temperature throughout the 23 mixture. 24 I 25 5-04.3(3)E Rollers 26 Rollers shall be of the steel wheel, vibratory, oscillatory, or pneumatic tire type, in good 27 condition and capable of reversing without backlash. Operation of the roller shall be in 28 accordance with the manufacturer's recommendations. When ordered by the Engineer for 29 any roller planned for use on the project, the Contractor shall provide a copy of the I 30 manufacturer's recommendation for the use of that roller for compaction of HMA. The 31 number and weight of rollers shall be sufficient to compact the mixture in compliance with 32 the requirements of Section 5-04.3(10). The use of equipment that results in crushing of the 33 aggregate will not be permitted. Rollers producing pickup, washboard, uneven compaction I 34 of the surface, displacement of the mixture or other undesirable results shall not be used. 35 I 36 5-04.3(4) Preparation of Existing Paved Surfaces 37 When the surface of the existing pavement or old base is irregular, the Contractor shall bring 38 it to a uniform grade and cross section as shown on the Plans or approved by the Engineer. I 39 40 Preleveling of uneven or broken surfaces over which HMA is to be placed may be 41 accomplished by using an asphalt paver, a motor patrol grader, or by hand raking, as I 42 approved by the Engineer. 43 44 Compaction of preleveling HMA shall be to the satisfaction of the Engineer and may require 45 the use of small steel wheel rollers, plate compactors, or pneumatic rollers to avoid bridging 46 across preleveled areas by the compaction equipment. Equipment used for the compaction 47 of preleveling HMA shall be approved by the Engineer. I 48 2020 PAVEMENT MAINTENANCE OVERLAY PAGE 48 OF 79 SPECIAL PROVISIONS I WORK ORDER 3727 FEBRUARY 20,2020