Browsing by Author "Johnson, Ann M."
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Item Asphalt Pavement Maintenance Field Guide(Minnesota Local Road Research Board, 2002-01) Johnson, Ann M.This field guide provides guidelines for preventive asphalt pavement maintenance techniques for a variety of distresses and conditions. It covers crack treatments (clean and seal, rout and seal, full-depth crack repair); surface treatments (fog seal, seal coat, thin hot-mix overlays); pothole patching and repair (cold-mix asphalt, spray injection patching, hotmix asphalt, slurry or microsurfacing material). This guide is condensed from the Best Practices Handbook on Asphalt Pavement Maintenance, manual number 2000-04, available at http://hdl.handle.net/11299/199769.Item Best Practices Handbook for Roadside Vegetation Management(Minnesota Department of Transportation, 2008-07) Johnson, Ann M.Maintaining roadsides for safety and aesthetics is an important issue for all levels of government throughout Minnesota. Vegetation is one important element of roadside maintenance. A healthy roadside environment reduces maintenance needs and costs, reduces erosion and improves water quality, improves water infiltration and reduces runoff, preserves the roadside surface, maximizes safety for vehicles and travelers, limits liability for the governing agency, maintains good public relations, improves the overall driving experience, and provides habitat for wildlife populations. This handbook was written to provide guidelines for effective management of roadside vegetation for local agencies, and highlights eight best management practices (BMPs) that were identified through research, literature review, surveys, and discussion with industry experts. The eight best management practices for roadside vegetation are: (1) develop an integrated roadside vegetation management plan; (2) develop a public relations plan; (3) develop a mowing policy and improved procedures; (4) establish sustainable vegetation; (5) control prohibited and restricted noxious weeds; (6) manage living snow fences; (7) use integrated construction and maintenance practices; and (8) manage roadside vegetation for wildlife and vehicle safety. The main conclusion from the handbook is that successful roadside vegetation management depends on an integrated approach. This includes a wide variety of best management practices to address the many issues involved. This integrated approach includes an assessment of the existing conditions and determination of the type of roadside environment desired. Other construction operations, including proper seeding techniques, selection of the correct plant in the right area, selection of salt-tolerant plant species where needed, and erosion control, will greatly affect the roadside condition. Use of integrated construction and maintenance practices is one of the most important best management practices identified in the handbook.Item Best Practices Handbook on Asphalt Pavement Maintenance(Minnesota Technology Transfer/LTAP Program, Center for Transportation Studies, 2000-02) Johnson, Ann M.The purpose of this handbook is to provide background information about the importance of pavement preservation and preventive maintenance, as well as present maintenance techniques for a variety of distresses and conditions. The major focus of this handbook is on preventive maintenance activities, which are performed while the roadway is still in good condition with only minimal distress, before the pavement falls into a condition where structural overlays, major milling or reclaiming, or replacement is necessary. The most common flexible pavement distresses are cracking, roughness, weathering, raveling, rutting and bleeding. If the distresses identified in a pavement are related to structural deficiencies, the pavement section is most likely not a candidate for preventive maintenance treatment, and should be scheduled for rehabilitation or reconstruction. Maintenance treatments covered in this handbook include: Crack repair w/sealing, including clean and seal, saw and seal, and rout and seal; crack filling, full depth crack repair, fog seal, seal coat, double chip seal, slurry seal, microsurfacing, thin hot mix overlays, and potholes and pavement patching. Tables are outlined giving the most common flexible pavement distresses, along with the best practices for rehabilitation for each. Also given are recommended applications for crack sealers and fillers, surface treatments, and pothole patching. Specifications, technical memoranda and special provisions are included for all treatment methods recommended in the handbook.Item Best Practices Handbook on Roadside Vegetation Management(Minnesota Technology Transfer/LTAP Program, Center for Transportation Studies, 2000-09) Johnson, Ann M.Maintaining roadsides for safety and aesthetics is an important issue for all levels of government throughout Minnesota. Vegetation is one important element of roadside maintenance. This handbook provides guidelines for effective management of roadside vegetation for local agencies, and highlights seven best management practices that were identified through research, surveys, and discussion with industry experts. The seven best management practices for roadside vegetation fall into these seven categories: 1. Develop an integrated roadside vegetation management plan; 2. Develop a public relations plan; 3. Develop a mowing policy and improved procedures; 4. Establish sustainable vegetation; 5. Control noxious weeds; 6. Manage living snow fences; 7. Use integrated construction and maintenance practices; The main conclusion from the handbook is that successful roadside vegetation management depends on an integrated approach. This includes a wide variety of best management practices to address the many issues involved. This integrated approach includes an assessment of the existing conditions and determination of the type of roadside environment desired. Other construction operations, including proper seeding techniques, selection of the correct plant in the right area, selection of salt-tolerant seed species where needed, and erosion control, will greatly affect the roadside condition. Use of integrated construction and maintenance practices is one of the most important best management practices identified in the handbook.