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9. Construction StandardsSTANDARDS FOR DESIGN AND CONSTRUCTION KALISPELL, MONTANA Table of Contents Paae SECTION I - GENERAL PROVISIONS GP-01 Definition of Terms I - 1 GP-02 Excavation Permit I - 1 GP-03 City Fees GP-04 Licenses and Laws GP-05 Disruption of Service 1-2 GP-06 Traffic Control and Safety 1-2 GP-07 Liability Insurance and Bonding 1-2 GP-08 Excavation within the Public Right -of -Way I - 3 GP-09 Survey Monumentation 1-4 GP-10 Dust and Pollution Controls 1-4 GP-11 Pavement Restoration 1-4 GP-12 Storm Water Discharge Permit 1-5 GP-13 Construction Inspection 1-5 GP-14 Guarantee for Equipment, Materials and Workmanship 1-5 GP-15 Stop Work Order 1-5 GP-15 Cleanup 1-5 SECTION II - DESIGN STANDARDS DS-01 Design and Development Requirements H- 1 DS-02 Water Systems H - 1 DS-03 Sanitary Sewer Systems II - 3 DS-04 Storm Drainage Systems II - 5 DS-05 Roadways and Walkways n - 6 DS-06 Driveways H - 7 DS-07 Street Lights, Utilities and Easements II - 7 DS-08 Site Plans II - 8 DS-09 Plan Submittal II - 8 STANDARDS FOR DESIGN AND CONSTRUCTION KALISPELL, MONTANA Table of Contents Page SECTION III - CONSTRUCTION STANDARDS CS-01 Contractor Requirements III - 1 CS-02 Contract Award CS-03 Construction Standards CS-04 Record Drawings and Project Acceptance III - 3 CS-05 One Year Guarantee Inspection III - 3 SECTION IV - STANDARD DRAWINGS SD-1 Collector Street SD-2 Local Street SD-3 Alternate Local Street SD-4 Standard Curb and Gutter SD-5 Drive Over Curb and Gutter SD-6 Straight Curb SD-7 Standard Sidewalk SD-8 Vehicle Tracking Control SD-9 Storm Drain and Sanitary Sewer Service Connections SD-10 Water Meter Pit SD-11 Pedestrian Ramp for the Handicapped SECTION I GP-01 Definition of Terms Words and phrases in these Standards have the same meaning as those in The Subdivision Regulations of the City of Kalispell. GP-02 Excavation Permit All work within the public right-of-way shall require a Permit issued by the City Engineer or the Engineer's representative. The Permit will not be issued until all licensing, insurance and bonding requirements have been met and necessary fees paid. The types of work authorized by the Permit shall include, but is not limited to, street construction, water or sewer system construction and repair, sidewalk and curbing installation, driveway access, etc. In an emergency which requires repairs to be made immediately, the Contractor may excavate and complete the repairs without first having obtained a Permit. The Contractor shall obtain the Permit no later than the next scheduled city work day. All provisions of the Standards for Design and Construction for the City of Kalispell, Montana, shall be complied with regardless of the circumstances of the construction. GP-03 City Fees Water & Sewer Service Connection Fee. A fee shall be paid to the City of Kalispell for the connection of each new water and sewer service to the system. This fee must be paid even though a service line has previously been stubbed to the property line or other point. Connection fees for water and/or sewer must be paid before a Building Permit will be issued by the Building Department. Fee for Constructing Water Service. When it is necessary to tap an existing water main for a service connection, the City will provide the equipment, labor and materials required to tap the main, install the service line from the main to the service valve, install backfill, and restore the pavement surface. The City will charge the Owner the rate set forth in the Water Department Rate Schedule. The Owner will be responsible to construct the service line from the service valve to the point of service. GP-04 Licenses and Laws Permits for construction of improvements on public right-of-ways, easements or lands intended for such use, shall require that the Contractor be licensed by the State of Montana to perform such services. The Contractor shall give all notices and comply with all federal, state and local laws, ordinances and regulations affecting the conduct of the work, and shall indemnify and I-1 hold harmless the City against any claim or liability arising from, or based on, the violation of any such law, ordinance, regulation, etc., whether by himself or his employees. GP-05 Disruption of Service Any construction that will disrupt normal operation of city sewer, water or transportation facilities will require a City -Approved method of notifying affected individuals. The Contractor shall notify the Kalispell City Police and Fire Departments at least forty-eight (48) hours prior to any street closures. All street closures will require the Contractor to provide a news release specifying the location of the construction and the duration of the closure. The Contractor shall present the news release to the news media at least two (2) days prior to the beginning of any construction activity. The Contractor shall also notify all individuals affected by the project of the type and duration of the disruption. GP-06 Traffic Control and Safety A Traffic Control Plan must be submitted and approved by the City Engineer, or the Engineer's representative, for all work within the public right-of-way. The location and description of all traffic control devices must be shown on the Traffic Control Plan. The plan must be approved prior to beginning construction. If the required traffic control devices are not in place, the Contractor will not be allowed to begin work on the project. All traffic control devices shall be kept in place and maintained in good visible condition throughout the project. The City Engineer, or the Engineer's representative, reserves the right to reject any traffic control device observed to be in inferior condition. Emergency access to the work area shall be maintained at all times. The Manual on Uniform Traffic Control Devices shall be followed to provide information necessary for the safety of the public. All barricades and obstructions shall be protected at night by suitable signal lights which shall be kept illuminated from sunset to sunrise. Barricades shall be of substantial construction and shall be constructed to increase their visibility at night. Suitable warning signs shall be placed and illuminated at night to show in advance where construction, barricades or detours exist. GP-07 Liability Insurance and Bonding Liability Insurance. The Contractor shall procure and maintain, at his own expense, during the construction period, General Public Liability and Property Damage Insurance including vehicle coverage issued to the Contractor and protecting him from all claims for personal injury, including death, and all claims for destruction of or damage to property, arising out of or in connection with any operations covered by the contract documents, whether such operations be by himself or by any Subcontractor under him, or anyone directly or indirectly employed by the Contractor or by a Subcontractor under him. I-2 Insurance shall be written with a limit of liability not less than $750,000 for each claim and $1,500,000 for each occurance. Insurance shall be written with a limit of liability not less than $200,000 for all property damage sustained by any one person in any one accident; and a limit of liability not less than $200,000 aggregate for any such damage sustained by two or more persons in any one accident. The Contractor shall hold harmless, indemnify and defend the City and each of its agents, and each of their officers and employees, from any and all liability claims, losses or damage arising, or alleged to arise from the performance of the work described herein, but not including the sole negligence of the City or its representatives. Each policy or certificate shall bear an endorsement or statement waiving the right of cancellation or reduction in coverage without ten (10) days written notice being delivered by certified mail to the City. Bonding. The Developer shall be required to provide the City with a Performance Bond for all public infrastructure construction required by a subdivision, development, or phased development. The bond shall be 125% of the contract (bid) price, or as determined by the City Engineer. The bond shall remain in full force until the project is accepted by the City. Upon project acceptance, the Developer shall be required to provide the City with a Maintenance Bond of 10% of the Performance Bond amount prior to release of the Performance Bond. The Maintenance Bond shall remain in full force throughout the one year guarantee period. All other construction work within the public right-of-way or easement (sidewalk and curb construction, storm drainage and sanitary sewer service line installation, repair, etc.) will require the Contractor to provide the City with a Performance Bond. The bond shall be equal to the value of the project, or as determined by the City Engineer, and shall remain in force for one year from the date of completing the project. Contractors furnishing the City with an annual bond of at least $5,000 for various projects will not be required to furnish additional bonding, providing the existing bond meets the requirements of these standards. Bonds may be in the form of a Surety Bond, a Certificate of Deposit (CD) or a Certified Check, GP-08 Excavation within the Public Right -of -Way All excavated materials shall be immediately loaded into trucks, removed from the site and disposed of by the Contractor. Excavated materials shall not be stockpiled on site. Native materials shall not be used for backfill. Trench backfill within the public right-of-way shall consist of imported select uncrushed material (Type A Trench Backfill) containing stones no larger than six (6) inches at its largest dimension. This material shall provide a uniform gradation mixture in accordance with the requirements of the current edition of the Montana Public Works Standard Specifications. I-3 GP-09 Survey Monumentation New Construction Whenever new streets are constructed, survey monuments shall be installed. The monuments shall mark the centerline of the right-of-way and they shall be installed at all intersections, unless otherwise approved by the City Engineer. Reconstruction Whenever streets are reconstructed, a preliminary step in such reconstruction shall be a search for and referencing of original and existing intersection monuments by or under the supervision of a Professional Land Surveyor. When found, such monuments shall be referenced and, following reconstruction, remonumented. Monumentation Monuments shall be a rebar or driveable rod with a minimum diameter of 5/8" and a minimum length of eighteen (18) inches. The monument shall be capped with a brass or aluminum cap stamped with the Surveyor's name and registration number. The surface of the monument shall be flush with the pavement surface, or be accessible by a six (6) inch diameter riser box and lid if placed below the pavement surface. The monument shall be placed, marked and referenced by or under the supervision of a Professional Land Surveyor, who shall file a corner recordation on each intersection monument with the Flathead County Clerk and Recorder (with a copy sent to the Public Works Department) within 180 days of its placement. Each corner recordation shall depict the location of its respective monument and contain measurements to three or more reference objects. GP-10 Dust and Pollution Controls The Contractor shall be responsible to maintain the construction site and all haul routes in accordance with the current requirements of the City of Kalispell's Emission Control Plan. If the area to be disturbed is greater than 4,000 square feet, the Contractor shall obtain an Air Quah Construction and Demolition Report (Permit) prior to beginning construction. GP -I I Pavement Restoration The Contractor signing the Excavation Permit shall be responsible for pavement replacement. The Contractor shall restore all surfaces within fourteen calendar days after cutting the pavement. The pavement restoration shall match the existing type and thickness but shall be a minimum of three inches thick in all cases. The Contractor shall be responsible to maintain the area in a smooth and driveable condition until the permanent pavement is placed. If the ground is frozen, the gravel shall be compacted level to the roadway surface and maintained by the Contractor for safe Winter usage. The permanent restoration shall be made as soon as the ground is thawed in the Spring, or as directed by the City Engineer. All pavement restoration shall be in accordance with the Standards for Design and Construction for the City of Kalispell, Montana. If the Contractor fails to restore the pavement within the fourteen day period, or fails to maintain the trench or area as required, the City will complete the restoration or maintenance and the cost will be billed to the Contractor. I-4 GP-12 Storm Water Discharge Permit The Montana Pollutant Discharge Elimination System regulations require a storm water discharge permit for construction activity in which clearing, grading and excavating will result in the disturbance of five (5) or more acres, or the disturbance of one (1) or more acre if located within one hundred (100) feet of a surface water body (stream, river or lake). A Storm Water Erosion Control Plan must be approved by the Water Quality Bureau prior to construction. GP-13 Construction Inspection All development work designed by an Engineer shall be inspected and certified by the Engineer for conformance to plans and specification. Other construction work within the right-of-way shall be inspected and approved by the City Construction Inspector. It is the Contractor's responsibility to notify the City of the work requiring inspection at least twenty-four (24) hours in advance so the City may schedule and perform such inspections. GP-14 Guarantee for Equipment, Materials and Workmanship The Contractor shall guarantee all materials and equipment furnished and construction work performed on public improvements for a period of one (1) year from the date of written acceptance of the work by the City. GP-15 Stop Work Order A written Stop Work Order may be issued by the City Engineer or the Engineer's representative if the work in progress does not meet the Standards for Design and Construction for the City of Kalispell, Montana, or for any other valid reason. Work may resume only after the Stop Work Order has been rescinded by the City Engineer or the Engineer's representative. GP-16 Cleanup The Contractor shall clean the construction site of all debris, construction materials, etc., immediately upon completion of the project. I-5 SECTION II DESIGN STANDARDS DS-01 Design and Development Requirements Design Requirements. All water, sanitary sewer, storm drainage and roadway systems necessary to provide service to and within a development shall be constructed at the Developer's expense and shall be designed by a Professional Engineer. Plans and specifications shall bear the seal of the Engineer in responsible charge of the design. Water and sanitary sewer system designs shall be approved by the City Engineer prior to being submitted to the Department of Health and Environmental Sciences. Storm drainage and roadway designs shall be submitted to and approved by the City Engineer. All required approvals shall be obtained prior to beginning construction. Design calculations and testing results shall be submitted to the City Engineer as required. Development Requirements. All subdivisions and developments shall be in compliance with The Subdivision Regulations of the City of Kalispell. It shall be the responsibility of the Developer to construct all roadways and utilities from the existing facilities to the far property line of the development. All utilities shall be within a public right-of-way or easement to permit future Developers free and unobstructed access. A Developer's Extension Agreement may be approved by the City enabling the Developer to recover a pro -rated share of utility installation costs from late comers. The agreement shall apply only to service connections on the extended main. The agreement shall not apply to future extensions of the main. It is the Developers responsibility to obtain and provide the City with all easements and right-of- ways necessary to extend roadways and utilities to the development. DS-02 Water Systems Water systems shall be designed, constructed, and tested in accordance with the current editions of circular WQB 1 - Montana Department of Health and Environmental Sciences - Standards For Water Works and the Montana Public Works Standard Specifications. In addition, the following shall apply to the design of all Water Mains: All water main extensions will require the Design Engineer to submit a written report to the City Engineer which addresses the fire and domestic flow requirements. The report shall include data on test results at the nearest hydrant which shows the static pressure at zero flow from the hydrant and the residual pressure with available flow from the hydrant. The City will perform the required testing and will provide the test data to the Design Engineer, at no cost, if so requested. Fire Flow. The amount of fire flow required for structures shall be based on the Uniform Fire Code Appendix III -A. Non-structural utilization of an area shall have the fire flow requirements as determined by the Fire Chief. Minimum Pipe Sizes. The minimum diameter of all mains shall be eight inches, except fire hydrant runs less than fifty feet in length may be six inches. Pipe Material. Water main piping from six (6) to twelve (12) inches in diameter shall be Class 150 PVC pipe conforming to AWWA C-900 Standards. All water main piping larger than twelve (12) inches in diameter shall conform to AWWA C-905 Standards. Water Service Lines. Structures containing two or more residences under separate ownership, such as townhouses or condominiums, shall have separate service lines, service valves and meters for each residence. Structures containing two or more residences, offices or businesses that are rental units under common ownership may have one service line, valve and meter for all occupants within a single structure. All service lines will be installed by the City Crews at the owner's expense from the water main to the curb valve. Gate Valves. Gate valves shall be Mueller Resilient Seat Gate Valves conforming to AWWA C- 509 Standards. Butterfly Valves. Butterfly valves shall be Mueller Lineseal Butterfly Valves conforming to AWWA C-504 Standards. Fire Hydrants. Fire hydrants shall be Red Mueller Super Centurion Fire Hydrants conforming to AWWA C-502 Standards. The placement of all fire hydrants shall be subject to the approval of the Fire Chief. Service Clamps. Service clamps for PVC water mains shall be H-13000 Series Mueller Brass, or an approved equal, designed for use with AWWA C-900 PVC pipe. Corporation Valves and Service Valves. Corporation valves and service valves shall be Mueller 300 Series Ball Valves. Service Fittings. Service fittings shall be Mueller Insta-Tite or 110 Series compression fittings. Curb Boxes. Curb boxes shall be Mueller H-10308 or an approved equal, cast iron extension type with arch pattern base, 1 1/2 inch I.D. upper section, minimum length 6 1/2 feet, with a shut off rod and a lid having a pentagon nut in the plug. II-2 Service Pipe. Service pipe up to three (3) inches in diameter shall be polyethylene pipe conforming to AWWA C-901 Standards. Service pipe four (4) inches or larger in diameter shall be Class 150 PVC pipe, conforming to AWWA C-900 Standards. Tapping Sleeves. Tapping sleeves shall be Power Seal Model 3490 AS (Stainless Steel) or an approved equal. Ductile Iron Fittings. Ductile iron fittings shall be Class 350 SSB Fittings conforming to AWWA C-153 Standards. DS-03 Sanitary Sewer Systems Sanitary sewer systems shall be designed, constructed, and tested in accordance with the current editions of Recommended Standards for Sewage Works - 1978 Edition - Great Lakes - Upper Mississippi River Board of State Sanitary Engineers and the Montana Public Works Standard Specifications. In addition, the following shall apply to the design of all sanitary sewers: Gravity Sewers. The Engineer shall submit a written report for any development which will contribute more than 35,000 gallons per day to the existing system. The report shall assess the ability of the existing collection system to handle the peak design flow from the project and the impact on the Wastewater Treatment Plant. Sewage Lift Station A written report shall be submitted for any project that will create a new sewage lift station or will contribute to an existing sewage lift station. The report for a new sewage lift station shall contain, but not be limited to, the following: - a description of the proposed wet well, pumping system and force main. - the capacity of the recommended pumps and potential for upgrading. - a map showing the potential lift station service area. - the average and peak design flows for the proposed project and for the potential service area. - the hydraulic capacity of the force main. - the reserve capacity of the lift station when the proposed project is on line at full capacity. - the pump run and cycle times for the average and peak design flows. - strategies for improvements which may be necessary to accommodate future sewer extensions. (i.e. increased storage, pumping or auxiliary power capacity) - a statement of the pump selection process, including the Engineer's calculations for the total dynamic head, total discharge head, net positive suction head and other pertinent pump selection criteria. - the designed pump operating curve plotted on a manufacturer's pump performance chart with the designed operating point clearly identified. 1I-3 The report for a project that will contribute to an existing sewage lift station shall contain, but not be limited to, the following: - a description of the existing wet well, pumping system and force main. - the capacity of the existing pumps and potential for upgrading. - a map showing the potential lift station service area. - a list of the existing users and their average design flows. - the existing peak design flow and reserve capacity. the pump run and cycle times for the existing average and peak design flows. the hydraulic capacity of the force main. a list of the proposed users and their average design flows. the proposed average and peak design flows to the lift station. - the reserve capacity of the lift station with the proposed project on line at full capacity. - the pump run and cycle times for the proposed average and peak design flows. - recommendations for improvements, if necessary, to enable the lift station to serve the proposed project. Unless otherwise approved by the City Engineer, the pumping system shall be of the above ground, self -priming, suction lift type and the pumps shall be manufactured by the Gorman Rupp Company. An emergency power supply will be required for all lift stations. Upon request from the City Engineer, the Design Engineer shall submit a list of three lift stations of the type proposed which have been in operation at least five years. The City reserves the right to accept or reject the proposed lift station, based on the findings from these three different sources. The sources shall be from Montana, Idaho, or Wyoming. An alarm system shall be provided that is capable of detecting power interruption, high water and high motor temperature conditions. The alarm signals shall be directed to an on site alarm monitoring and telephone dialer system. The alarm monitoring and telephone dialer system shall be an ADAS Dialog Plus model as manufactured by Kaye Instruments. An hour meter, suction pressure gauge, and discharge pressure gauge are required on each pump. Amperage meters are required on each leg of the electrical wiring. Cathodic protection is required for all lift stations having a metallic exterior. The Engineer shall submit an analysis of the amount of cathodic protection required. Minimum Pipe Size. The minimum diameter of any gravity sanitary sewer main shall be eight (8) inches. Sanitary Sewer Service Lines. Structures containing two or more residences under separate ownership, such as townhouses or condominiums, shall have separate sewer service lines for each residence. Structures containing two or more residences, offices or business that are rental units under common ownership may have one service line for all occupants within a single structure. Quality of Sewage. No development shall introduce any sewage into the City of Kalispell Sanitary Sewer System that is not consistent with the requirements of Ordinance 854, or as subsequently amended. �! Gravity Main Cleanouts. Gravity main cleanouts shall not be permitted. All dead end mains shall terminate at a manhole. Force Main Cleanouts. Pressure type cleanouts, of the same size as the force main, shall be provided at approximate 600 foot intervals along a force main. The cap of the force main cleanout shall be tapped for and fitted with a one (1) inch threaded plug. The force main shall be equipped with a plug valve and valve box immediately upstream of each force main cleanout. Sanitary Sewer Manhole Ring and Cover. The sanitary sewer manhole ring and cover shall be Inland Foundary 772-A or approved equal. The cover shall be marked Sewer. DS-04 Storm Drainage Systems. Storm drain systems shall be designed, constructed, and tested in accordance with the current editions of the Standards for Desiizn and Construction for the City of Kalispell, Montana and the Montana Public Works Standard Specifications. Purpose of Design. For all development containing more than 10,000 square feet, the Developer's Engineer shall submit a report showing the design analysis for storm drainage. Depending upon conditions at the area of development, this requirement may be waived in writing by the City Engineer. The report shall include: Location of intermittent streams or drainage courses which are within the site boundaries and a determination of their water surface elevation for a 25 year storm. 2. Volume of storm water entering the site on a 10 year storm. 3. Volume of storm water contributed by the site before and after development, based on a 10 year storm. 4. The capabilities of the downstream drainage systems to handle the increased flow caused by the development. In areas where ground water may be a factor, the analysis shall include the effects of the ground water on the total storm drainage system proposed for the development. Design Storm Criteria. Design flows shall be based on a ten year - six hour storm, with a rainfall intensity of 0.55 inches/hour, see Figure 1 at the end of this Section. II-5 Manhole Spacing. The maximum spacing between storm manholes shall be 400 feet. Minimum Pipe Size. The minimum diameter of any gravity storm drainage main shall be eight (8) inches. Storm Drain Manhole Ring and Cover. The storm drain manhole ring and cover shall be Inland Foundary 772-A or approved equal. The cover shall be marked Storm. Storm Drain Inlets. Storm drain inlets shall be as follows: Straight curb applications Neenah 3174 or approved equal Curb and Gutter Applications Neenah 3067 or approved equal Storm Water Detention Pond(s). Detention ponding may be required on the property to be developed to reduce the peak rate of discharge of surface runoff. Developments which contribute a significant amount of runoff to, or will approach the capacity of an existing water course or drainage system, will be required to install storm water detention with orifice controlled outlet, or other outlet control, to reduce the peak discharge. Detention facilities must provide a means of overflow for storms larger than the design storm. Provisions must be made for access of maintenance equipment to all storm water detention ponds. Open Ponding. When open ponding is used for detention, the sides shall be sloped to a minimum of 3:1. Ponds exceeding thirty (30) inches in depth shall be enclosed within a six foot high chain link fence. The area of open ponding must be maintained by a Homeowner's Association or other entity, unless a written agreement for the City to maintain is approved by the City Council. Property Abutting Streams. Developments which adjoin streams, either seasonal or continual, shall collect any surface runoff into a central point, or points, before discharge to the water course. Retention will be required to remove silts and sediments to meet Montana Department of Fish, Wildlife & Parks standards. DS-05 Roadways and Walkways Roadway systems shall be designed, constructed, and tested in accordance with the current editions of the Standards for Design and Construction for the City of Kalispell, Montana, the Montana Public Works Standard Specifications and The Subdivision Regulations of the City of Kalispell. Traffic Analysis. Developments which can contribute one hundred (100) or more vehicle trips per day to the City Street System shall have a Traffic Analysis submitted by a Traffic Engineer. Such analysis shall indicate the expected increase in traffic movement on existing roadways serving the development, and shall determine existing traffic conditions on roadways to be impacted by the development. II-6 Cul-De-Sacs. Roadways that terminate at a cul-de-sac shall have a maximum length of six hundred (600) feet. The turn around radius shall be a minimum of forty-five (45) feet. If the development along this roadway consists of buildings three stories or higher, the minimum turn around radius of the cul-de-sac shall be fifty-five (55) feet to accommodate the Kalispell Fire Department's ladder truck. Traffic Control and Street Signs. The Developer shall provide and install the necessary Traffic Control in accordance with the Manual on Uniform Traffic Control Devices. Street name signs shall be installed at each intersection. All proposed street names shall be submitted to the City Engineer for approval prior to the preliminary plat submittal. Traffic Signals and Widening of U.S. 2 and U.S. 93. A copy of the Traffic Analysis submitted to the City may be forwarded to the Montana Department of Transportation for their review and recommendations. The Montana Department of Transportation's recommendations for traffic signals and widening along U.S. 2 or U.S. 93 for acceleration/deceleration lanes will become a City requirement. When widening is necessary or traffic signals or electronic warning devices are required, on -site or off -site, it shall be the Developer's responsibility, at the Developer's expense, to install such signals or devices. Walkways. All developments shall have delineated walkways which will allow pedestrians to safely travel from any part of the development to the boundaries of the development. Developments abutting existing or proposed roadways will be required to have walkways within the public right-of-way parallel with the roadways. The minimum width of a walkway shall be five (5) feet. DS-06 Driveways. Driveways onto collector streets shall be separated by at least eighty (80) feet. The nearest edge of any driveway on all other streets shall be not less than thirty five (35) feet to the edge of the pavement of the nearest intersecting street. DS-07 Street Lights Utilities and Easements. Street Lighting. Street lights shall be required at the time of development. Provisions may be made for their installation at a later date if approved by the City Council. The Developer shall submit the development plans to the Power Company for their recommendations on street light locations prior to submitting the plans to the City Engineer. TV, Telephone and Gas. If TV, telephone or natural gas is not installed at the time of development, provisions shall be made for installation at a later date without the cutting of paved roadways. II-7 Water and Sewer Line Easements. All water and sewer mains to be maintained by the City within an easement across private property shall be delineated and dedicated on the final plat. The easement shall be twenty (20) feet wide for a single pipeline with the pipe centerline five (5) feet from one easement edge. With two pipelines, the minimum width shall be twenty-five (25) feet with each pipe centerline five (5) feet from the easement edge. DS-08 Site Plans. Site Plans. All developments, excluding individual single family residences, shall submit plans and information as required on the Application for Site Review. The plans shall be submitted and approved by the authorized Governing Body or Agency prior to the issuance of any permit. DS-09 Plan Submittal. In addition to submitting plans to the City, it is also the responsibility of the Engineer to obtain the approval for water and sewer system extensions from the Montana Department of Health and Environmental Sciences. No authorization for the extension of any water and sewer system will be issued by the City until approval is obtained from MDHES. II-8 r 1 1= 0.8 U) Z 0.6 w Z 0.4 J J Q 0.2 !i Z 4 Cr_ 0.1 0.08 0.06 004 STORM DRAINAGE Q = C1A Q = Total Flow (CFS or GPM) C = Coefficient of Runoff 0.15 - Native Vegetation 0 - 5% slope = 0.20 - Native Vegetation 5% (+) slope - Light Grass to Bare Ground 0 - 5% slope a 0.25 - Light Grass to Bare Ground 5% (+) slope = 0.75 - Gravel Roads & Parking Areas 0 - 5% = 0.80 - Gravel Roads & Parking Areas 5% (+) = 0.90 - Pavement & Roofs i = Rainfall Intensity (10-year, 6-hour) = 0.55 Inches/Hour A = Area (Acres) CC RETURN MULTIPLIER ` PERIOD:. 10 OCR S�� sss>~asns�s s■sss�s�rsssss■r sssse■�.. <1►�1�►-��I.r� s, m sssf.�sss �►�r:_-�.s NMI 91111 oil a 6 7 8 9 io M 20 30 40 50 60 minutes DURATION 2 3 4 5 6 18910 12 18 24 hours FIGURE 1 CONSTRUCTION STANDARDS CS-01 Contractor Requirements. Contractors installing water, sanitary sewer, storm drainage, and roadway systems, or any other public improvements, shall be subject to the following requirements: Montana Contractor's License. The Contractor shall be the holder of a Montana Contractor's License in the class within which the value of the project falls. Statement of Ability and Experience. The Contractor shall submit a statement of work he has completed of a similar nature within the past twenty-four (24) months. The statement shall include the name, address and phone number of each reference. The Contractor shall include any other information deemed appropriate by the Design Engineer or the City Engineer. Insurance and Bondiniz. Insurance and bonding shall be in accordance with current City requirements. Additional insurance and bonding may be required for special circumstances as directed by the City Engineer. CS-02 Contract Award. For all projects, the Engineer shall provide the Montana Contractor's License Number, Statement of Ability and Experience, and evidence of insurance and bonding of the successful bidder to the City Engineer. Prior to the contract being awarded, the City Engineer must approve of the Contractor in writing. Pre -Construction Meeting. The Engineer shall conduct a pre -construction meeting. The successful Contractor, representatives of affected Utility Companies and the City Engineer or the Engineer's representative shall be present. Construction Schedule. Prior to construction, the Contractor shall provide the Engineer with a proposed construction progress schedule. The schedule shall show the proposed dates of commencement and completion of each of the various divisions of the project. The Engineer shall forward a copy of the construction schedule to the City Engineer. CS-03 Construction Standards. All water, sanitary sewer, storm drainage, and roadway systems, or any other construction within the public right-of-way, easement, or lands shall be constructed, inspected, and tested in accordance with the current edition of The Montana Public Works Standard Specifications. In addition, the following shall apply to construction, inspection, and testing of all public infrastructure construction projects: Shop Drawing Submittal. The Engineer shall provide the City with a copy of the approved shop drawings for all projects prior to beginning construction. Construction Inspection. The Inspecting Engineer shall provide construction inspection as required. Inspection shall be in accordance with the current edition of The Montana Public Works Standard Specifications. The City of Kalispell will require the following procedures on all utility and roadway construction projects: All water main valves and fittings, fire hydrants, sewer manholes, wet wells and sewer/water main crossings shall be inspected and approved by the Public Works Department prior to backfillin . 2. A Public Works Representative shall be present for all disinfection and testing procedures. 3. The Inspecting Engineer shall provide the City Engineer with photocopies of daily inspection reports for all projects. These reports shall be submitted on a weekly basis. Disinfecting and Flushing Water Mains. 1. Continuous Feed Method. The continuous feed method shall be used to disinfect all water mains. 2. Clearing. the Main of Heavily Chlorinated Water. After the applicable retention period, heavily chlorinated water should not remain in prolonged contact with pipe. In order to prevent damage to the pipe lining or corrosion damage to the pipe itself, the heavily chlorinated water shall be flushed from the main until chlorine measurements show that the concentration in the water leaving the main is no higher than that generally prevailing in the system or is acceptable for domestic use. Disposing of Heavily Chlorinated Water. Heavily chlorinated water shall not be disposed of in sanitary sewers, storm drains, or upon street or ground surfaces. The Contractor shall haul all heavily chlorinated water from the site and dispose of it in an environmentally safe manner. If there is any question that the heavily chlorinated water will cause damage to the environment, a reducing agent shall be applied to neutralize the chlorine remaining in the water. Television Inspection. The City of Kalispell reserves the right to inspect all underground utility systems by the use of a television camera prior to final acceptance. The costs for the initial inspection will be the responsibility of the City. If any deficiencies are found during the inspection, the Contractor shall correct them at the Contractor's expense. The cost of additional television inspection required to verify the correction of the deficiencies shall be the responsibility of the Contractor. III-2 Temporary Erosion & Sedimentation Control. No runoff containing sediment shall be permitted to flow off of any construction site. Sediment shall not be discharged into storm drainage systems, waterways or wetlands. For all developments, the Engineer shall indicate on the plans the type and location of the temporary erosion and sedimentation control barriers to be used. The Contractor shall provide and maintain the required sediment control barriers. The control barriers shall not be removed until all roadways have been paved and a permanent and stable vegetation cover has been established. Vehicle Tracking Control. All construction approaches onto public paved roadways shall have a vehicle tire cleaning area consisting of four inch or larger screened rock. The rock approaches shall be a minimum of fifty feet in length and twenty five feet in width. If such an approach becomes ineffective, additional rock will be required to the satisfaction of the City Engineer. All vehicles entering and exiting the site shall do so on tracking control approaches. CS-04 Record Drawings and Project Acceptance. Upon project completion and before written acceptance will be issued by the City, the Inspecting Engineer shall certify and submit one set of reproducible record drawings to the City. Until record drawings have been submitted to, and approved by the City Engineer, the City will not accept the project as complete. After drawings have been submitted to the City, the City will issue written acceptance to the Inspection Engineer. The one year guarantee period begins from the date of written acceptance by the City. CS-05 One Year Guarantee Inspection. The Inspecting Engineer shall conduct a one year guarantee inspection. A Public Works Representative shall accompany the Engineer on the inspection. The Engineer shall notify the Contractor of any work found to be defective. III-3 5' SIDEWALK 5' SIDEWALK VARIES VARIES 60' R W MIN. 1' 2' 18' MIN. 1 18, MIN. i 2' 1' S=2' _ _ 5=2' " a oOo°o°o°o°o°o°o°o°o°o°o°o°o°o°o°o°o°o°o��o o�000 4 TOPSOIL o000o0o0opo�oaa�oQo�opo�oQo�apopoQo�o�o�opo�0AOQ°p.Qo 4' ASPHALT/ 95% COMPACTION PER ASTM D-1559 3" CRUSHED GRAVEL/97% COMPACTION PER AASHTO T-99 15' SELECT SUB —BASE/ 95% COMPACTION PER AASHTO T-99 4' TOPSOIL 1. Thicknesses of asphalt, 3/4" crushed gravel and sub —base shall be as shown unless on alternate design is approved. The City may accept an alternate street design from a Professional Engineer if the traffic loads and soil analysis justify different requirements. The final street design •rust be approved by the City Engineer. 2. The width of pavement will depend on local conditions such as width of existing streets in the area, anticipated traffic volumes, future extensions, etc. 3. The width of the R/W may have to be increased due to road slopes, utilities, traffic volume or other requirements. 4. All topsoiled areas to be sodded by Developer. 5. No parking will be allowed on collector streets. 6. The maximum grade shall be 7% for distances not to exceed 150 feet. CONSTRUCTION STANDARDS COLLECTOR STREET SD-1 CITY OF KALISPELL 5' SIDEWALK VARIES 60' R/W MIN. 5' SIDEWALK VARIES 12'-16' 12'-1 6' 2' 1 ' S=2` S=2' 4" TOPSOIL o 0 0 0 0 0 0 0 0 0°0°0°0°0°0 0 0 0 0 0 0 0 ° J°O°O°O°o°O°o°O°O°O°O°O°o°o°o°O°O°O°O°D°O°O°°°o°°°o°° n n n n n n n n n n n n n n n n n n n n n n n O n n n 4" ASPHALT/ 95% COMPACTION PER ASTM D-1 559 3" CRUSHED GRAVEL/97% COMPACTION PER AASHTO T-99 12" SELECT SUB —BASE/ 95% COMPACTION PER AASHTO T-99 4" TOPSOIL 1. Thicknesses of asphalt, 3/4" crushed gravel and sub —base shall be as shown unless an alternate design is approved. The City may accept an alternate street design from a Professional Engineer if the traffic loads and soil analysis justify different requirements. The final street design must be approved by the City Engineer. 2. The width of pavement will depend on local conditions such as width of existing streets in the area, anticipated traffic volume, parking requirements, future extensions, etc. 3. The width of the R/W may have to be increased due to road slopes, utilities, traffic volume or other requirements. 4. All topsoiled areas to be sodded by Developer. (Hydro —seeding to be approved by City Engineer). 5. No parking will be allowed on 28' wide streets. (28' back of curb to back of curb). 6. The maximum grade shall be 7% for distances not to exceed 150 feet. 7. Parking on both sides allowed on 36' wide streets. 8. Parking on one side only on 32' wide street. (Signs for no parking on other side at Developers expense). CONSTRUCTION STANDARDS LOCAL STREET SD-2 CITY OF KALISPELL 60' R/W MIN. ' , 1 2' MIN. i 1 2'MIN. , 5' , 3' S=2° ! S=2` —a—a�"o"o"o"o"o"oo"0 0 0"0" 00000000000000000000000000000000000oO00000000000D0o00000o00 0 0 o c o o_c o 0?0�0?0- a o 0-0_0_0_0_0_0_0_0_0_0_0_0_0_0 4" TOPSOIL 4" TOPSOIL 4" ASPHALT/ 95% COMPACTION PER ASTM D-1559 3" CRUSHED GRAVEL/ 97% COMPACTION PER AASHTO T-99 12" SELECT SUB —BASE/ 95% COMPACTION PER AASHTO T-99 3" CRUSHED GRAVEL/ 97% COMPACTION PER AASHTO T-99 (SHOULDER OF ROAD) 1. This cross—section may be used only when the area adjacent to the proposed development does not have curbing or established storm drainage systems. This cross—section must be approved by the City Council prior to incorporating into the drawings. 2. Thicknesses of asphalt, 3/4" crushed grovel and sub —base shall be as shown unless an alternate design is approved. The City may accept an alternate street design from a Professional Engineer if the traffic loads and soil analysis justify different requirements. The final street design must be approved by the City Engineer. 3. The width of the pavement will depend on local conditions such as widths of existing streets in the area, anticipated traffic volume, future extensions etc. 4. The width of the R/W may have to be increased due to road slopes, utilities, traffic volume or other requirements. 5. All topsoiled areas to be sodded by Developer. (Hydro —seeding to be approved by City Engineer). 6. No parking will be allowed on 24' wide streets. (See note 3) 7. The maximum grade shall be 7% for distances not to exceed 150 feet. 8. Developer must install no parking signage. CONSTRUCTION STANDARDS RURAL SECTION SD-3 CITY OF KALISPELL -1 /2" .3" R 12" ° a a. 4 ° o ° 4. o d c ° . ° c 4 if -- 24' a'. TOP OF CURB TO FLOWLINE 0.45' TO 0.50' 1. 1 /2" expansion joint material shall be placed at the P.C. and the P.T.. 2. Contraction joints shall be placed at every 15' of curb length and shall have a minimum depth of 3/4' and minimum width of 1/8". Contraction joints shall be constructed by sawing or scoring. A tool shall be used which will leave corners rounded and destroy aggregate interlock for the specified minimum depth. 3. Grade, alignment and forms shall be inspected by the City prior to pouring. 4. Concrete shall be M-4000 with 3/4 inch maximum aggregate and a 28—day strength of 4000 PSI, 5% to 8% air content with a maximum slump of four (4) inches. 5. Individual contractors forms may vary slightly from this pattern. Patterns which achieve essentially the same result as the above pattern may be approved by the City. 6. Four inches of base material is requried. Base material shall be 3/4' crushed gravel compacted to 97% per AASHTO T-99. CONSTRUCTION STANDARDS I STANDARD CURB SD-4 CITY OF KALISPELL AND GUTTER 15" RADIUS N I 0 N 24" 1. This curb does not meet handicapped access requirements and should not be used for access romps. 2. 1 /2" expansion joint material shall be placed at the P.C. and the P.T.. 3. Contraction joints shall be placed at every 15' of curb length and shall have a minimum depth of 3/4" and minimum width of 1 /8". Contraction joints shall be constructed by sawing or scoring. A tool shall be used which will leave corners rounded and destroy aggregate interlock for the specified minimum depth. 4. Grade, alignment and forms shall be inspected by the City prior to pouring. 5. Concrete shall be M-4000 with 3/4 inch maximum aggregate and a 28—day strength of 4000 P.S.I., 5% to 8% air content with a maximum slump of four (4) inches. 6. Four inches of base material is required. Base material shall be 3/4" crushed gravel compacted to 97% per AASHTO T-99. CONSTRUCTION STANDARDS DRIVE OVER CURB & GUTTER SD-5 CITY OF KALISPELL 1 —1 /2" RADIUS r PUA1 8„� 1. 1 /2„ expansion joint material shall be placed at the P.C., and the P.T., and at 45' maximum spacing. 2. Contraction joints shall be placed at every 15 feet of curb length and shall have a minimum depth of 3/4" and minimum width of 1 /8". Contraction joints shall be constructed by sawing or scoring. When scoring, a tool shall be used which will leave corners rounded and destroy aggregate interlock for the specified minimum depth. 3. Grade, alignment and forms shall be inspected by the City prior to pouring. 4. Concrete shall be M-4000 with 3/4 inch maximum aggregate and a 28—day strength of 4000 PSI, 5% to 8% air content with a maximum slump of four (4) inches. 5. Individual contractors forms may vary slightly from this pattern. Patterns which achieve essentially the some result as the above pattern may be approved by the City. 6. Four inches of base material is . required. Base material shall be 3/4" crushed gravel compacted to 97% per AASHTO T-99. CONSTRUCTION STANDARDS STRAIGHT CURB SD-6 CITY OF KALISPELL BOULEVARD SIDEWALK SECTION A 4" EXCEPT AT DRIVEWAYS WHERE IT SHALL BE 6" 1. Concrete shall be M-4000 with 3/4 inch maximum aggregate and c 28—day strength of 4000 PSI, 5% to 8% air content with a maximum slump of four (4) inches. 2. Contraction joints shall be spaced the same dimension as the width but not to exceed 6 feet each way. Contraction joints shall be constructed by sawing or scoring. A tool shall be used which will leave corners rounded and destroy aggregate interlock for the specified minimum depth. Contraction joints shall be a minimum of 1 /4 of the total depth of the concrete. 3. All sidewalks greater than six feet in width shall be sawcut lengthwise down the center a minimum of 1 /4 the total depth of the concrete. 4. Expanded joints, using 1 /2" material shall be spaced at intervals of 45' maximum. 5. All edges and joints shall be rounded with an edging tool of a minimum 1 /4" radius. 6. Six inches of base material is required. Base material shall be 3/4" crushed gravel compacted to 97% per AASHTO T-99, or sand thoroughly compacted in place. 7. Grade, alignment and forms shall be inspected by the City prior to pouring. 8. All concrete driveway sections shall be 6 inches thick. CONSTRUCTION STANDARDS STANDARD CITY OF KALISPELL SIDEWALK SD-7 SILT FENCE —j TRACKING PAD 8 INCHES THICK OF 4 INCH SCREENED ROCK All vehicles entering and exiting the construction site must go across the rock pad to prevent mud and dirt from tracking offsite. Rock shall be replenished if tracking occurs. All materials spilled, dropped, washed or tracked from vehicles onto roadways must be removed immediately. CONSTRUCTION STANDARDS VEHICLE TRACKING CONTROL JSD-8 CITY OF KALISPELL 6'6" IS THE CONSIDERED TO PREVENT INLAND FOUNDRY 722-A OR APPROVED EQUAL THE COVER SHALL BE MARKED WATER A!l It ICTI[\IC DIN[t-Q WASHED GRAVEL CONSTRUCTION STANDARDS WATER METER PIT SD-10 CITY OF KALISPELL NOTE: LOCATION TO BE DETERMINED BY ENGINEER FLARED SIDE FACE OF GUTTER BOTTOM X—LINE � '' TOP OF CURB 4,3,' MINK 4° FLOW LINE FRONT VIEW 1. Handicapped ramps shall comply with the Americians with Disabilities Act\Accessibility guidelines for buildings and facilities. 2. The least possible slope shall be used for handicapped ramps and adjacent sloped areas. The maximum slope shall be 1:12. 3. The cross slope shall be no greater than 1:50 (2 percent). 4. Curb ramps shall be 36 inches wide minimum, exclusive of flared sides. 5. A landing area the width of the ramp and at least 36 inches in length shall be provided at the top of the ramp. Slope of the landing shall not exceed 1:50 (2 percent) in all directions. CONSTRUCTION STANDARDS PEDESTRIAN RAMP ISD-11 CITY OF KALISPELL FOR THE HANDICAPPED