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HomeMy WebLinkAbout15114RESOLUTION NO. 15114 A RESOLUTION APPROVING REVISIONS TO THE STANDARD CONSTRUCTION SPECIFICATIONS AND STANDARD DETAILS FOR THE CITY OF PUEBLO WHEREAS, Resolution 14853, dated April 11, 2022, adopted the Standard Construction Specifications and Standard Details; NOW, THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF PUEBLO, that SECTION 1. Pursuant to and in furtherance of sections 4-2-2 (8), 12-3-1, 12-4-7 (J)(2), 12-4- 7(J)(5)(b), 12-4-7 (J)(5)(c), 12-4-7 (J)(8), 12-6-5 (f), and 12-6-9 of the 1971 Code of Ordinances of the City of Pueblo, as amended, and upon recommendation by the City Engineer, City Council does approve the revisions to the Standard Construction Specifications and Standard Details for the City of Pueblo, Colorado, published April 11, 2022, by the Department of Public Works, a true copy of which is attached hereto and made a part hereof by reference (hereinafter referred to as the “Standard Specifications”). SECTION 2. After adoption of this Resolution, a true copy of the Standard Specifications, as revised, shall be maintained on file in the office of the City Clerk for public inspection. Copies of the Standard Specifications, as revised, shall be made available through the City’s Department of Public Works and on the City of Pueblo Website. SECTION 3. The officers of the City are authorized to perform any and all acts consistent with the intent of the Resolution to implement the policies and procedures described herein. SECTION 4. This Resolution shall become effective immediately upon final approval. INTRODUCED January 9, 2023 BY: Vicente Martinez Ortega MEMBER OF CITY COUNCIL APPROVED: PRESIDENT OF CITY COUNCIL ATTESTED BY: CITY CLERK City Clerk's Office Item # M5 Background Paper for Proposed Resolution COUNCIL MEETING DATE: January 9, 2023 TO: President Heather Graham and Members of City Council CC: Mayor Nicholas A. Gradisar VIA: Marisa Stoller, City Clerk FROM: Andrew Hayes, Public Works Director SUBJECT: A RESOLUTION APPROVING REVISIONS TO THE STANDARD CONSTRUCTION SPECIFICATIONS AND STANDARD DETAILS FOR THE CITY OF PUEBLO SUMMARY: This Resolution approves revisions to the Standard Construction Specifications and Standard Details for the City of Pueblo, Colorado dated April 11, 2022, and was amended on December 12, 2022. PREVIOUS COUNCIL ACTION: Resolution 14853, dated April 11, 2022, adopted the Standard Construction Specifications and Standard Details. Resolution, Item M6, approved December 12, 2022, amended the adopted Standard Construction Specifications and Standard Details. BACKGROUND: The Public Works Department – in coordination with other departments responsible for managing the City of Pueblo Public Infrastructure Systems – develops construction standards and specifications that apply to all City of Pueblo projects. The Standards also apply to construction work performed by developers and builders responsible for constructing public improvements in residential, commercial, and industrial developments within the City of Pueblo. These standards ensure the public infrastructure can safely meet the needs and demands of the public; and that the City of Pueblo remains in compliance with State and Federal law; and that the City of Pueblo responsibly approaches the management of the Total Life-Cycle cost of constructing, operating, and maintaining its infrastructure systems. The Standards generally do not specify what types of improvements must be constructed for a given project, but they do address the required quality, materials, dimensions, capacities, and other physical and functional characteristics for our public infrastructure systems. The Standard Construction Specifications and Standard Details were adopted by the City Council in April 2022. Since their adoption, certain administrative corrections are necessary to provide Clarification of Intent. Attached to the Resolution are those sheets from the Standard Specifications that have been changed. Those changes that are deletions are stricken through and are in brackets. Those changes that are additions are underlined. All changes (either additions or deletions) are in red. FINANCIAL IMPLICATIONS: Not applicable. BOARD/COMMISSION RECOMMENDATION: Not applicable. STAKEHOLDER PROCESS: Since implementation of the Standard Construction Specifications and Standard Details in April 2022, the City of Pueblo has continued to engage with the Committee of Community Development (made up of local engineers, designers, builders, developers, representatives from PEDCO, and City Council members) to review and provide feedback on the Standards. The Public Works Department desires to continue working with the Committee and other stakeholders on an annual basis to discuss specific areas of concern and any issues that may arise over time with respect to the Standard Construction Specifications and Standard Details. ALTERNATIVES: The existing Standard Construction Specifications and Standard Details will remain in effect if the Resolution is not approved. RECOMMENDATION: Approval of the Resolution. ATTACHMENTS: 1. Standard Construction Specifications - Text Revisions (010923) cost to the City. (d) Excavation for Appurtenances. Provide excavation for manholes, catch-basins, inlets, or similar structures sufficient to leave at least 12" clear between the outer structure surfaces and the face of the excavation or support members. Clear rock or loose debris and cut to a firm surface either level, stepped, or serrated, as directed by the Engineer. Remove loose disintegrated rock and thin strata. When concrete or masonry is to be placed in the excavated area, take special care not to disturb the bottom of the excavation. Do not excavate to the final grade level until just before the concrete or masonry is to be placed. (e) Jacking, Boring, and Tunneling. Unless otherwise indicated, provide excavation by open cut except that sections of a trench may be jacked, bored, or tunneled if, in the opinion of the Engineer, the pipe, cable, or duct can be safely and properly installed and backfill can be properly compacted in such sections. The utility shall be at a cover depth of not less than 48" unless approved by City Engineer. Equipment to be used and method of installation shall be presented to the City Engineer for approval prior to any installation. (f) Underground Utilities. The contractor is responsible for movement of construction machinery and equipment over pipes and utilities during construction. Work performed adjacent to non-City utilities shall be in accordance with procedures outlined by the utility owner. For work immediately adjacent to or for excavations exposing a utility or other buried obstruction, excavate by hand. Start hand excavation on each side of the indicated obstruction and continue until the obstruction is uncovered or until clearance for the new grade is assured. Support uncovered lines or other existing work affected by the excavation until approval for backfill is granted by the Engineer. Report damage to utility lines or subsurface construction to Engineer immediately. (g) Asphalt Patch. If the distance from the lip line of the curb & gutter to the trench is less than 4', all asphalt shall be removed from lip to the trench line. Asphalt shall have a sawcut edge 12" on either side of the trench. 7.3.2.6 Potholing Backfill Requirements It is the responsibility of the contractor working within the public right-of-way to locate all utilities and telecommunication infrastructure prior to beginning any work. The locating of these utility infrastructures shall be performed by a licensed contractor and shall conform to the following requirements: (a) Utility locate potholes shall not be placed in the wheel path of a travel lane or within 10-feet of a crosswalk. Potholes shall not be placed within the concrete accessible walking surfaces or curb ramps, if a pothole must be made in these surfaces, the contractor shall replace the entire concrete section or curb ramp. (b) All utility locate potholes in the pavement section, sidewalk, or curb and gutter shall be cored with a circular coring saw with a maximum diameter of 12-inches. Article 7 - 4 The plug shall be carefully removed, without causing damage to the plug. The plug shall be marked and removed from the site until such time as it is returned in the core hole. (c) Excavations for potholes shall be backfilled with CLSM in accordance with Article 4.2.3. Native material removed shall not be used to backfill the pothole. (d) All plugs will be placed back in the corresponding hole in the original orientation at the time of restoration. The sides of the plugs shall be coated and the top sealed with permanent bonding agent. (e) In the event the core plugs are damaged or cannot be used to fill the core hole, the asphalt shall be repaired using hot mix asphalt paving material from the City approved list. For concrete plugs, repairs shall be made using a 4,000-psi concrete mix. (f) Core holes shall be cleaned and tacked prior to placing hot mix asphalt paving materials as follows: a. Residential — 6-inches of hot mix asphalt paving materials. b. Collector/Arterial — 12-inches of hot mix asphalt paving materials. (g) Variances to this policy must be approved in writing by the City Engineer. (h) Initial locate potholes may be temporarily repaired, meeting all applicable safety requirements, for no more than 30 days unless additional time is authorized by the City in writing. 7.3.3 STRIPPING OF TOPSOIL Where indicated or as directed, strip topsoil to a depth as prescribed in the construction plans or to a depth of 4". Spread topsoil on areas already graded and prepared for topsoil, or transported and deposited in stockpiles convenient to the areas that are to receive application of the topsoil later, or at locations indicated or specified by the Engineer. Keep topsoil separate from other excavated materials, brush, litter, objectionable weeds, roots, stones larger than 2" in diameter, and other materials that would interfere with planting and maintenance operations. 7.3.4 CLEARING AND GRUBBING Keep roads and walks free of dirt and debris at all times. 7.3.4.1 Clearing Article 7 - 5 new material direction over the old line of compatible material. Such new material shall bond itself to the old line in such a manner that no splitting or separation takes place." 8.4.5 MEASUREMENT AND PAYMENT The accepted quantities will be paid for at the contract price per unit of measurement for each the pay items listed below that appear in the bid schedule. Payment will be made under: Table 8.6. Payment Units Pay item Pay Unit Pavement Marking Paint Gallon Modified Epoxy Pavement Marking Gallon Pavement Marking Tape LF Pavement Marking Paint (Word-Symbol) SF Pavement Marking Paint (Xwalk-Stop Line) SF Thermoplastic Pavement Marking SF Thermoplastic Pavement Marking (Word-Symbol) SF Thermoplastic Pavement Marking (Xwalk-Stop Line) SF Preformed Thermoplastic Pavement Marking SF Preformed Thermoplastic Pavement Marking (Word-Symbol) SF Preformed Thermoplastic Pavement Marking (Xwalk-Stop Line) SF Waterblasting will not be measured or paid for separately but shall be included in the work. Glass beads and cleaning with high pressure water blast or air blast shall be included in the cost of the work. Each authorized application of temporary pavement marking will be measured and paid for at the contract unit price for each type of material used. Control points and Contractor pavement marking plans will not be measured and paid for separately but shall be included in the work. All costs associated with having the Preformed Plastic Pavement Marking manufacturer-trained installer on-site and providing documentation will not be measured and paid separately but shall be included in the work. 8.5 CRACK SEALING 8.5.1 DESCRIPTION This item shall consist of furnishing all materials, equipment, labor, cleaning and clean up, traffic control and incidental items necessary for sealing or filling cracks of asphalt pavements. The purpose of crack sealing and crack filling is to prevent the intrusion of water and other materials. Crack sealing shall be applicable for cracks 1/4"to 3/4"wide or as recommended by manufacturer. Crack filler is recommended for cracks that are 1" or wider and/or exhibit edge deterioration. Crack Sealer is used for working cracks, cracks that have more than 1/4" seasonal movement. Both hot and cold materials are currently available for crack sealing; however, this specification is meant to only apply to hot applied materials. Crack Filler should be used for nonworking cracks. Non-working cracks are cracks that have annual movement less than 1/4". Non working crack types may include wide transverse Article 8 - 14 cracks. If a crack exhibits edge deterioration it should be filled not sealed. 8.5.2 MATERIALS Materials used for crack sealing shall meet or exceed requirements of ASTM D 6690 for Type II Material as specified. Crack sealers are typically viscous at high temperatures and applied with a wand and excess material is spread with a squeegee. The Contractor/Developer shall provide material certifications and manufacturer's instructions for heating and application. Materials used for crack filling shall be a premixed blend of polymer modified asphalt binder and wear resistant aggregates heated and mixed in a specialized melter. They are usually applied using a specialized device and smoothed with a heated float. The Contractor/Developer shall provide material certifications and manufacturer's instructions for heating and application. Material shall be approved by Engineer prior to application. 8.5.3 EQUIPMENT Equipment shall be as specified by the sealant manufacturer and approved by the Engineer. All equipment and machinery shall be kept in good working order, free of leaks and properly muffled. All taxes, licenses and fees shall have been paid and proper licenses and permits shall be posted as required by law. An oil jacketed type melting unit equipped with both agitation and recirculation systems shall be used to heat the sealant. Direct Fire Melters will not be allowed. The unit shall be equipped with separate thermometers for both the oil bath and the crack sealing material. Thermometers shall be calibrated on a weekly basis to ensure the proper heating of the material. Materials shall be heated according to the manufacturer's specifications. Fresh material shall not be added to material that was overheated in an attempt to make it acceptable. Material that has been overheated shall be removed and discarded. 8.5.4 CONSTRUCTION REQUIREMENTS Prior to sealing, all loose material shall be blown out of cracks using a heat lance. Care shall be taken not to burn of scorch the pavement. Torches shall not be used. The Contractor/Developer shall ensure that blown debris shall not strike pedestrians, workers, or cause damage to vehicles and/or private property during cleaning and sealing operations. The Contractor/Developer shall clean debris from streets and sidewalks as soon as sealant has hardened sufficiently. Cracks shall be free of moisture, residue from deicing chemicals, vegetation and loose matter prior to sealing. If sealant boils when applied additional drying is required before sealing resumes. Cracks shall be sealed to a minimum depth equal to two times the crack width or the full thickness of the pavement. Overband, if used, shall not exceed 3" in width and 1/8" in height above the pavement surface. Overband width is critical when sealing longitudinal cracks or in stopping zones to avoid creating hazards for cyclists or reducing the tire friction. Article 8 - 15 When the Engineer specifies routing of cracks, routing shall precede blowing out cracks. Engineer shall specify if routing is required prior to placement of Crack Seal and the type of sealant or filler application to be installed: Flush Fill Routed and Flush Filled Flush --/N1 Ilk' Overband (also referred to as "Band Aid") Routed and Overband AT 171 The finished level of Crack Seal or Crack Filler shall be flush to 1/8" above the asphalt surface. Excess material shall be removed by the Contractor/Developer at the Contractor's/Developer's expense. The Contractor/Developer shall apply the sealant material according to manufacturer's recommendations with approval by the Engineer. The Contractor/Developer shall be solely responsible for safety during all operations and making sure material is placed only in cracks with or without overband as shown above. Costs of damage, cleanup and/or material placed incorrectly shall be borne by the Contractor/Developer. Traffic shall be kept off sealant until sufficiently hard to not be picked up by traffic. Cooling of sealant can be accelerated using a commercial solution or water. Blotting with sand or paper is not acceptable. Article 8 - 16 QUALITY CONTROL REQUIREMENT CHECKLIST Climatic Conditions: • Surface temperature is at least 45°F and rising or per manufacturer's recommendations. • No moisture, fog or dew is present. • Early morning operations should be performed in direct sunlight. Routing • Cutting tips are sufficiently sharp to minimize spalling and cracking. • Proper safety garments are worn (hard hat, reflective vest, long-sleeved shirt, pants, steel toed boots, safety goggles, and hearing protection). • Guards and safety mechanisms on equipment work properly. • Router follows cracks without difficulty. • Routed cracks do not exhibit spalling. Material Preparation • Proper safety garments are worn (hard hat, reflective vest, lonq-sleeved shirt, pants, steel toed boots, safety goggles, and hearing protection). • Heating oil in melter jacket is not fuming and level is adequate. • Temperature gauge on the melter has been calibrated to the satisfaction of the AGENCY. • If the temperature gauge has not been calibrated: • Measure sealant temperature with a thermometer. • Ensure that the reading on the thermometer is the same as the reading on the melter temperature gauge. • Sealant is never reheated above the manufacturer's recommended pouring temperature. • Material safety data sheet (MSDS) is available on-site. Cleaning of Cracks and Routs • Proper safety garments are worn (hard hat, reflective vest, long-sleeved shirt, pants, steel toed boots, safety goggles, and hearing protection). • A power sweeper or vacuum cleaner is being used to remove dirt and debris from the pavement surface. • Compressor for high-pressure air provides at least 100 psi. • Oil and moisture filters on compressor work properly. • Temperature of the hot-air lance is below 930°F and the tip is 2 to 4 inches from the crack or rout. • The cleanliness of the crack or rout is being checked every 30 minutes. • The crack or rout is dry. • No deicing chemical residue is present. Sealant Application • Hot-pour sealant is poured at the manufacturer's recommended temperature. • The material is applied to the inside of the cracks. • Insure that sealant is placed up to the asphalt surface. • There is sufficient sealant to allow for overband (if applicable). • There are no bubbles due to moisture present. Article 8 - 17 Overbandinq of Sealant(if applicable) • Over band is not more than 3 inches wide. • Over band is not more than 1/8 inch above the pavement surface. • Over band is formed during, or immediately after, sealant application. • Excess sealant is removed before hardening. Sealant Protection • Traffic is rerouted until sealant is set. 8.5.5 MEASUREMENT Crack sealant shall be measured and paid by the ton complete in place and accepted. If routing is specified it will not be measured and paid separately but shall be included in the cost of material. The Contractor/Developer shall measure and the inspector verify the following: Before work starts each day: • Amount of material in melter • Number and weight of containers of material on site • All containers are clearly marked with manufacturer's information. At the end of work each day: • Amount of material in melter. • Number of containers of material not used. The Contractor/Developer shall certify that material in the melter is per the specifications and has not been overheated. Measurement will not begin before inspector arrives. Inspector shall be given adequate notice if material is to be delivered during the workday and have the opportunity to verify quantity. Counting or delivering boxes or lids shall not be an acceptable method of verifying quantity of material. 8.5.6 TESTING AND INSPECTION -GUIDANCE When pulled vertically using a flattened sharp tipped 1/4" rod bent at 90° the bond between the sealant and asphalt should be stronger than the sealant or the asphalt. Sealant or existing asphalt pavement should fail before the bond is broken. Article 8 - 18