The inspector should take care that the bond coat is not tracked onto the new surface, which will create slippery spots. Did the paver have to stop and wait for trucks? Safety Project Submittal (Form 1627), 2024 Streamlined Systemic HSIP Selection List Open texture areas in the joint should be filled using the HMA mixture with the large stones removed. Living Snow Fence, Fiscal Year Obligation Reports This guidance takes effect as of August 29, 2016. Improper adjustments of catch basins can create drainage problems, which will lead to early deterioration of the roadway. It is very important that proper air pressure be maintained in all tires. Every haul truck should be equipped with a tarpaulin, which can be employed as needed to protect the mix in case of inclement weather. The grade sensor usually rides directly on the beam at its midpoint. The certification is normally completed by the Region Traveling Mixture Inspector (TMI) before the Contractor starts his first project in the spring. The people most likely to be hurt on an asphalt paving project are those individuals who are new to this type of work. This continuous action of the slat conveyors and augers is accomplished by setting the proper position for the hopper flow gates and determining the correct speed setting for the slat conveyors and augers. Bond coat, also referred to as tack coat, is an asphalt emulsion. To reach the required density, the quickest initial compaction should occur directly behind the lay down machine. Projects constructed under a warranty special provision still require inspection staffing and complete documentation prior to payment, including MDOT materials certifications, MDOT yield checks, MDOT quantity measurement, and MDOT Inspectors Daily Reports. The inspector should check the entire pavement surface to ensure that all corrections are made before resurfacing work begins. Plan Submittal. Common Safety Countermeasures for Local Agencies for Peds and Bikes Document the completion of paving courses on lots/sublots of HMA paving material during the day. PLANT PRODUCTION (TONS PER HOUR) YIELD IS POUNDS PER SQUARE YARD. FHWA Emergency Relief Program Video FY 2024 Electronic Application Submittal Form This 55 foot overall length assembly produces a mat with an exceptionally smooth riding surface. The paver screed will be equipped with a special template strike-off and a small weighted roller for construction and compaction of this joint. Public Notice of University Region Bridge Council Meeting for October 12, 2022, FY 2025 Local Bridge Applications Received with the proposed access and/or road improvements are required in accordance with standards and practices accepted by MDOT SHA. It is the backbone of Michigans 120,000-mile highway, road and street network. Selection. The screed of the second paver must be set at the same level as the screed of the first paver; this will prevent the screed of the second paver from dragging on the mix placed by the first paver. 316 0 obj <<1cc850f8a7a5b5157c73556bf669a59d>]>>stream FY 2025 Local Bridge Program Call For Applications - Due April 2022 Mountain Standard Time is the second westernmost time zone in the United States and Canada. Bulletin include test data for all coarse and fine Aggregate used in Maryland Highway construction. When the inspector sees an improper bond coat application, the operation should be stopped. Paver speed for various production and application rates can be calculated using the following equations or selected from Figure 502-5. Project mixture and testing Special Provisions. xc```f`` An end gate is attached to the end of the screed to restrict the outward movement of the mix around the end of the screed. 4 0 obj The OAG audit found the lack of documentation regarding the initial acceptance of the warrantied work, interim and final inspections, and notification to the contractor and Surety Company after the final inspection was completed. Material Quality. Most drum mixer plants heat the aggregate, add the asphalt cement and recycled asphalt pavement (RAP), if used, and mix all the ingredients in the same drum. endstream endobj Try to keep the paver moving at a constant speed. The haul trucks and all paving personnel must keep away from the line and not disturb it in any way. Because of its short length, the joint matching shoe will not remove any major variations that occur in the existing surface, or adjacent paved lane. Welche Kriterien es vor dem Kaufen die Nici qid zu untersuchen gibt! Final Report Part 3 In general, the vibrators should be used near the maximum possible frequency. Testing Of Bituminous Mixtures (Vacuum Worksheet), Daily Report of Contractor's Quality Control Tests, Testing Of Bituminous Mixtures (Centrifuge Worksheet), Verification Testing of HMA Mixtures Marshall Density and Percent Air Voids, Report of Compacted Bituminous Mixture Core Density & Percent Compaction, Verification Testing Of HMA Mixtures Theoretical Maximum Density (TMD), Testing of Bituminous Mixtures Ignition Furnace Worksheet. The web Browser you are currently using is unsupported, and some features of this site may not work as intended. Everyone, regardless of title or job function, must be aware of the need for safe work practices. The old saying Safety is Everyones Business is certainly true on an HMA paving project. Typical Use: Item 340 is typically used for projects with small quantities of hot mix asphalt (HMA). The 2015 Office of Auditor Generals (OAG) audit of the warranty program found deficiencies in all aspects of the warranty administration process. A pre-production meeting should be held before work commences on a project. 2P3G(30120&gp9@. These guidelines will be incorporated into the next version of the HMA Production Manual. &[a);8fUcK@=fCW ?Qdo Steam rising from the mix as it is dumped into the hopper of the spreader indicates moisture in the mix. 2024 HRRR Selection List Dividing the tonnage placed, by the area covered, will give the yield. There are two basic types of asphalt mixing plants. The inspector may use the following checklist to record the condition of equipment. Trying to reconstruct events at a later time without written notes and complete test data is usually frustrating and often results in conflicting opinions as to exactly what happened. Aggregate of different sizes should be stockpiled separate from one another. Resources for truckers regarding necessary rules, guidelines, restrictions, and permits, needed to safely transport goods throughout Michigan. Be in good condition with no holes or tears. <> No raking of the joint is needed. Excess Moisture. The final step before the bond coat is applied is to thoroughly clean the existing surface by brooming and/or other methods; all vegetation and debris must be removed from pavement joints and cracks. Sampling frequency required is based on the percentage/tonnage of RAP that will be utilized on the project. This point is called the tow or pull point. The hitch is controlled by the paver operator. The flow gates should be adjusted to provide a uniform head of material in front of the screed. 311 0 obj <>stream Risk analysis is specifically used to select appropriate performance standards for various bridge . Is the automation ski of proper length 30 feet +/- for all courses except last pass top course? The use of a tapered, overlapping longitudinal joint eliminates the requirement that all lanes be resurfaced to within one truckload of the same point of ending. In the surface course, the entire affected area should be removed promptly and sufficient new material placed to form a true and even surface. Whether you are from out of state or right here in Michigan, we want to ensure your travel throughout Michigan is informative, comfortable, and fun. Before overlaying an old HMA pavement, it should be inspected. If an unsafe work practice is noticed, corrective action should be taken immediately, even if the paving operation has to be shut down until the unsafe practice is corrected. Compaction must be achieved while the stiffness of the mix is low enough to allow for reorientation of the aggregate particles under the action of the rollers. Bond coat material must be applied with an approved distributor with a uniform spray. The applied amplitude is determined by the location of the eccentric weights that are located on the shaft. The role of each person on the project, for both MDOT and the Contractor, should be discussed and made clear. This device consists of a short 12 inch shoe or ski that is used to reference the grade of an adjacent piece of pavement or curb. Ensure mixture temperature is high enough for proper compaction. At the bottom of the paver hopper is a set of slat conveyors. The importance of staying within the surface tolerance for smoothness cannot be overemphasized. Structures located in the roadway should have the top of the cover flush with the wearing surface when the final compaction is completed. It is important that the augers carry a consistent amount of mix across the front of the screed so that the pressure on the screed is kept as constant as possible. Avoid spraying adjacent completed surfaces that will remain exposed. Roller Checklist - Manufacturer and Roller Number -______________________________________. Interim and Final Inspection forms must be filled out even if there are no deficiencies and filed in ProjectWise. Design The lane edge should not vary more than 1 inch in 3 feet from the established alignment. Conventional The faster a roller passes over a point on the asphalt surface, the less time the weight of the roller has to work on that point; this means that less compactive effort is applied to the mixture. Hand raking and shaping around the cover must be completed before the material cools. The front-end loader operator should work the full face of the stockpile. @c0M8;\ r)]-f3E|r ZVu~[ The surface can have two types of waves: long waves and short waves. Other surface blemishes are caused by the truck backing into the paver, the screed settling when the paver stops and when the paver operator empties the hopper wings into an empty hopper. Adjust catch basins after the leveling course has been placed. Too Cold: A generally stiff appearance, or improper coating of the larger aggregate particles, indicates a cold mixture. The screed extensions should be level with the main screed. If the wedging is greater than 3 inches, two courses of HMA mixture may be required. Bleeding can be caused by too much asphalt cement in the mixture, or by allowing traffic onto the paved surface before the surface has cooled sufficiently. Transportation Systems Management & Operations, Transportation and Civil Engineering Program, Transportation and Civil Engineering Internship, Transportation Diversity Recruitment Program, https://dev.michigan.local/som/json?sc_device=json, 2nd Street Bridge over Kalamazoo River in Allegan County, Maritime and Port Facility Assistance Office, National Summer Transportation Institute Program, Go to Transportation Systems Management & Operations, Go to Transportation and Civil Engineering Program, Go to Transportation and Civil Engineering Internship, Go to Youth Development & Mentoring Program, Go to Transportation Diversity Recruitment Program, Mackinac Straits Corridor Authority (MSCA), Transportation Asset Management Council (TAMC), Logistics & Supply Chain Collaboration (LSC), Instructions for Preparing to Bid Federal Aid Projects Through MDOT, Instructions for Construction of Federally Funded Local Agency projects by Non-Competitive Bid Contract (Force Account), Bridge Area Staff Engineer Contact Information, Regional Bridge Councils Contact Information, Local Bridge Advisory Board Contact Information, Public Notice of Local Bridge Advisory Board Meeting October27, 2022- Location Change, Public Notice of Bay Region Bridge Council Meeting for October 3, 2022, Public Notice of Grand Region Bridge Council Meeting for October 10, 2022, Public Notice of Metro Region Bridge Council Meeting for September 28, 2022, Public Notice of North Region Bridge Council Meeting for September 22, 2022, Public Notice of Southwest Region Bridge Council Meeting for October 5, 2022, Public Notice of Superior Region Bridge Council Meeting for September 23, 2022, Public Notice of University Region Bridge Council Meeting for October 12, 2022, FY 2025 Local Bridge Applications Received, FY 2022 LAP Bridge Scoping Cost Estimate Worksheet, FY 2025 Local Bridge Program Call For Applications - Due April 2022, FY 2026 Local Bridge Program - Call for Applications Submission Sheet, Asset Management Guide for Local Agency Bridges in Michigan, Asset Management Bridge Inventory Data and Maintenance Plan Spreadsheet, TE Grant Applicant Roles/Responsibilities, FY 2024 Local Safety Program Applications Received, FY 2024 Safety (HSIP and HRRR) Call Letter, FY 2024 Electronic Application Submittal Form, FY 2024 HSIP Streamlined Systemic Application, Highway Safety Manual (HSM) Analysis Spreadsheet, 2024 Streamlined Systemic HSIP Selection List, 2023 Streamlined Systemic HSIP Selection List, ATSSA/NACE Low Cost Local Road Safety Solutions, Incorporating Safety into Resurfacing and Restoration Projects, Common Safety Countermeasures for Local Agencies for Segments and Intersections, Common Safety Countermeasures for Local Agencies for Peds and Bikes. 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