LARIMER COUNTY RURAL AREA ROAD STANDARDS

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Appendix D – Construction StandardsSection D.2 Revisions to CDOT Standards Specifications for Road and Bridge Constructionand in each longitudinal direction so that the grinding begins and ends at lines normal to thepavement centerline within the ground area. All ground areas shall be neat rectangular areas ofuniform surface.Diamond grinding, including all necessary traffic control, shall be completed at the Contractor’sexpense.On asphalt pavements, the diamond grinding shall not reduce planned pavement thickness bymore than 0.3 inch and the entire ground area shall be covered with a fog seal coat whengrinding is complete. On concrete pavements, the diamond grinding shall be completed prior tojoint sealing and prior to determining pavement thickness in accordance with subsection 412.21.When longitudinal tining is required on concrete pavement, the diamond ground surface shall begrooved to restore the longitudinal texture, whenever the length of the ground area exceeds 45feet.If roadway smoothness exceeds the limits allowable for diamond grinding, corrective work onasphalt pavements shall consist of an approved overlay or removal and replacement.Corrective work on asphalt pavements shall conform to the following conditions:(a)Removal and replacement. The pavement in areas requiring corrective work shall beremoved the full width of the lane and the full thickness of the course in accordance withSubsection 202.09 Removal of Asphalt Mat (Planing).The removal area shall begin and end with a transverse butt joint, which shall beconstructed with a transverse saw cut perpendicular to centerline. All replacement shallbe made with approved hot mix asphalt mixtures that meet all contract requirements.Replacement material shall be placed in sufficient quantity so the finished surface willconform to grade and smoothness requirements. The corrective area shall becompacted to the specified density.(b)Overlay. The overlay shall cover the full width of the pavement including shoulders. Thearea overlaid shall begin and end with a transverse butt joint which shall be constructedwith a transverse saw cut and asphalt removal. All material shall be approved hot mixasphalt mixtures that meet all contract requirements. The overlay shall be placed so thefinished surface will conform to grade and smoothness requirements. The overlaid areashall be compacted to the specified density. The overlay thickness shall be equivalent tothat of the final pass made in accordance with the plans and specifications.If roadway smoothness exceeds the limits allowable for diamond grinding, corrective work onconcrete pavements shall consist removal and replacement. Corrective work on concretepavements shall conform to the following conditions:Removal and Replacement. The pavement areas requiring corrective work shall be removed thefull width of the lane and full length of the slab between horizontal control joints and shall bejointed in accordance with M-412-1Regardless of the corrective method used, the final product shall provide a pavement surfaceequal to adjacent sections not requiring corrective work.All corrective work, including all necessary traffic control, shall be completed at the Contractorsexpense.Larimer County Rural Area Road Standards Page D-5October 22, 2007
Appendix D – Construction StandardsSection D.2 Revisions to CDOT Standards Specifications for Road and Bridge ConstructionIn Subsection 105.08 delete the second paragraph and replace with the followingIn case of discrepancy, the order of precedence is as follows:(a)(b)(c)Specifications1. Appendix D of Larimer County Specifications2. CDOT Standard SpecificationsDetails1. Appendix C Standard Drawings2. CDOT M & S StandardsApproved Development Construction PlansD.2.2 Revision of Section 106 – Control of MaterialREVISION OF SECTION 106CONTROL OF MATERIALSubsection 106.02 (b) shall include the following:The Contractor shall furnish evidence that Contractor source materials meet the contractspecifications and shall pay for such tests as may be required to show compliance. All materialshall be sampled and tested in accordance with the appropriate Colorado Department ofTransportation or AASHTO procedures. Any materials lab doing work for the Contractor mustbe approved by the County before any testing is done.The County is mandated by state statute (Section 35-5-102, CRS) to control the spread of thefollowing noxious weeds:Leafy spurgeCanada thistleMusk thistleRussian knapweedSpotted knapweedDiffuse knapweedYellow toadflaxDalmation toadflaxEuphorbia esulaCirsium arvenseCarduus nutansCentaurea repensCentaurea maculosaCentaurea diffuseLinaria vulgarisLinaria genistifoliaAny source of imported embankment, topsoil, or gravel, except screened material, must beinspected and approved by the County Environmental Specialist, or designee, prior toincorporation into the project. If these materials are infested with these weeds, the Contractormust move to a different location within the area that is not infested or select another sourcealtogether. The Contractor shall notify the County a minimum of two (2) days prior to movingany materials onto the project site in order to schedule this inspection. In the event theContractor is unable to find a material source that is not infested, he shall be required tocoordinate a treatment program with the Larimer County Weed District and the Engineer. Thecost of complying with this requirement shall be included in the work.Larimer County Rural Area Road Standards Page D-6October 22, 2007
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LARIMER COUNTYRURAL AREA ROAD STAND
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Table of Contents3.3.11 Typical Str
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Table of ContentsCHAPTER 8 - ENVIRO
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Table of Contents12.3.7.2 Conventio
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Table of ContentsG.7.12 Other Permi
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Chapter 1 - General InformationSect
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Chapter 2 - Submittal ProceduresSec
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Chapter 2 - Submittal ProceduresSec
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Chapter 3 - Submittal Requirements
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Chapter 4 - Road Design and Technic
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4.9.1.7 Design VehiclesChapter 4 -
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CHAPTER 5 - GEOTECHNICAL STANDARDS
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Chapter 5 - Geotechnical Standards
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Chapter 6 - STORMWATER MANAGEMENTSe
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Chapter 7 - Bridges and Major Drain
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Chapter 8 - Environmental and Agric
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Chapter 8 - Environmental and Agric
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9.1.3 DefinitionsChapter 9 - Roadwa
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CHAPTER 10 - ACCESS REQUIREMENTS AN
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Chapter 10 - Access Requirements an
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Page 73 and 74: Chapter 12 - Right of Way Permittin
Page 93 and 94: Appendix A - Definitions and Abbrev
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Page 97 and 98: APPENDIX B - REFERENCES AND RESOURC
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Page 112 and 113: Appendix D - Construction Standards
Page 130 and 131: APPENDIX E - CONSTRUCTION TESTING F
Page 132 and 133: Appendix F - Guidelines for Traffic
Page 140 and 141: APPENDIX G - DESIGN AND CONSTRUCTIO
Page 142 and 143: Appendix G - Design and Constructio
Page 154 and 155: Appendix H - General NotesSection H
Page 162 and 163: APPENDIX I - VARIANCE REQUEST SUBMI
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LARIMER COUNTY RURAL AREA ROAD STANDARDS

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