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The city adopts the current edition of the Montana Public Works Standard Specifications (MPWSS).
(A) Modifications to the MPWSS are set forth in this document.
(B) These changes and/or additions shall in all cases either govern over the MPWSS, where applicable, or shall work in conjunction with the MPWSS where applicable.
(Prior Code, § 11.05.010.030) (Ord. 2019-9, passed 9-3-2019; Ord. 2021-15, passed 12-20-2021)
All construction, excavation or other work on public or private property which will necessitate the use of the public right-of-way or easement shall require a public right-of-way permit issued by the Public Works Department.
(A) The work authorized by the permit includes, but is not limited to, street construction and repair, water, sewer, and storm system construction and repair, utility connections and repair, landscaping, sidewalk, curbing, and driveway construction and repair.
(B) Also included are any other uses of the public right-of-way where there is a possibility of creating a hazard.
(C) Examples of hazards are scaffolding, storage of materials or equipment, crane and equipment operations, demolition, sandblasting and painting operations, temporary construction or demolition dumpster placement, and any other use deemed a hazard by the PWD.
(D) The permit will not be issued until all insurance and bonding, and their subcontractors shall be required to purchase an excavation permit. Improvements to boulevards in public right-of-way require approval from the City PWD.
(E) The adjacent property owner is responsible for all costs associated with construction and maintenance of any boulevard improvements that have been approved.
(Prior Code, § 11.05.010.040) (Ord. 2019-9, passed 9-3-2019; Ord. 2021-15, passed 12-20-2021)
(A) No person or party shall interrupt or restore municipal service or access to any customer or property without the express consent of the PWD.
(B) Any construction that will interrupt the normal operation of city sewer or water or transportation facilities, in which consent by PWD has been given requires notification to property owners and/or residents.
(1) The certification will identify the location, day, time and duration of the street closer or service interruption.
(2) The contractor shall notify the City Police and Fire Department at least 48 hours prior to any street closures.
(3) The Fire Department will also be given said notice for water main interruptions.
(Prior Code, § 11.05.010.050) (Ord. 2019-9, passed 9-3-2019; Ord. 2021-15, passed 12-20-2021)
(A) Liability insurance. The contractor shall procure and maintain, at the contractor’s expense, during the construction period, contractor’s liability insurance in accordance with the supplementary conditions to the general conditions of the Montana Public Works Standard Specifications.
(B) Bonding.
(1) The property owner/developer will provide the city with a performance bond equal to the value of the project for all public infrastructure construction required by a subdivision, development or phased development.
(2) All construction work within the public right-of-way or easement (sidewalk and curb construction, storm drainage and sanitary sewer service line installation, repair and the like) will require the property owner/contractor to provide the city with a performance bond.
(3) Upon written acceptance of the project by the city, the property owner/developer will be required to provide the city with a maintenance bond of 10% of the value of the work performed.
(a) The maintenance bond shall remain in full force throughout the one-year guarantee period.
(b) Contractors furnishing the city with an annual bond of $5,000 will not be required to furnish additional bonding if the $5,000 bond meets the requirements of these standards.
(c) Bonds may be in the form of a surety bond, a certificate of deposit (CD), a certified check or an irrevocable letter of credit issued by a bank licensed to do business in the state.
(Prior Code, § 11.05.010.060) (Ord. 2019-9, passed 9-3-2019; Ord. 2021-15, passed 12-20-2021)
(A) Project control, benchmarks, and horizontal and vertical datums shall be clearly shown on the plans and shall include location, description and elevation.
(B) A control point file is required so that the project can be oriented in the city’s GIS database. A minimum of four control points shall be reported.
(C) The control point file can be a unique layer in the CAD drawing or a shape, text or tabular file.
(D) Control methods:
(1) Horizontal control.
(a) Any local, state or national geodetic survey (NGS) adopted system may be used.
(b) The system must be identified so that data can be easily convert from one system to another.
(2) Vertical control. The North American Vertical Datum 1988 (NAVD 88), or the most current adopted NGS Vertical Datum for the United States and territories, shall be used for the vertical control.
(E) Conversion from design coordinates to the above shall be provided on the plans and include the following information:
(1) Northing, easting and orthometric height control points;
(2) Latitude, longitude and ellipsoid height of control points.
(3) Geoid used;
(4) Meridian convergence angle at control points; and
(5) Ground scale factor at control points.
(F) All full-sized plans shall be on 24-inch by 36-inch plan sheets or 22-inch by 34-inch plan sheets.
(1) Reduced scale plans may be submitted for review if approved by the City PWD, but all plans for final approval (excepting the one required one-half size sheet) and all record drawings shall be full-sized.
(2) All plans submitted for review and approval will be stamped, signed and dated by a professional engineer licensed in the state.
(G) (1) All drawings will have both plan and profile views of the proposed improvements.
(2) A general location map shall be provided showing the relationship of each page to the overall development.
(H) Project datum and benchmarks shall be clearly identified on the plans.
(I) English units are required.
(Prior Code, § 11.05.010.070) (Ord. 2019-9, passed 9-3-2019; Ord. 2021-15, passed 12-20-2021)
The following scales are required. Other scales will be considered on a case by case basis if all information can be clearly shown.
View
|
Scale
|
Plans view | 1" = 50' |
Profile view, horizontal | 1" = 50' (or match plan view scale) |
Profile view, vertical | 1" = 50' |
Stational interview | 100 feet or 50 feet |
(Prior Code, § 11.05.010.080) (Ord. 2019-9, passed 9-3-2019; Ord. 2021-15, passed 12-20-2021)
(A) The following items will be required on all plans. Existing features should be shown dashed or with a lighter shading than proposed new features.
(B) All construction will be tied to the centerline of a city right-of-way, to the centerline of a city easement, to a platted property line or to a section line.
(1) Plan view.
(a) North arrow;
(b) Legends of symbol;
(c) Property lines and ownership or subdivision information;
(d) Street names and easements with width dimensions;
(e) Project stationing;
(f) Limits of existing paved or graveled surfaces;
(g) Monument boxes;
(h) Culverts; and
(i) Existing and proposed utilities and structures, including:
1. Line size and material where appropriate;
2. Water lines (main lines and service lines), valves and hydrants;
3. Sanitary sewer lines (main lines and service lines) and manholes;
4. Storm sewer lines, manholes and inlets;
5. Gas lines;
6. Electric lines, poles and transformers;
7. Telephone lines, manholes and junction boxes;
8. Cable television lines and junction boxes;
9. Irrigation ditches and structures;
10. Irrigation systems;
11. Fiber optic lines, manholes and junction boxes;
12. Street lights; and
13. Proposed method of restoration of all disturbed during construction.
(2) Profile view.
(a) Vertical and horizontal grids to scales;
(b) Final grade (solid);
(c) Existing grade (dashed);
(d) Existing utility lines where crossed;
(e) Project stationing; and
(f) Utility crossings.
(Prior Code, § 11.05.010.090) (Ord. 2019-9, passed 9-3-2019)
(A) The following general notes must be clearly identified:
(1) All construction will conform to MPWSS, latest edition, and city modifications to MPWSS;
(2) Any existing or new valves which control the city’s water supply shall be operated by city personnel only;
(3) The contractor shall notify the Water Department a minimum of 24-hours prior to beginning any work; and
(4) Contractor shall field-verify line and grade of existing connections.
(B) Plans for water facilities shall show the following:
(1) Size, type and structural class of proposed new water line(s), including AWWA specifications;
(2) Bedding class;
(3) Existing water lines, including size and material;
(4) Proposed valves, fittings, fire hydrants and service lines, with stationing;
(5) Depth of cover from finish grade to proposed water line(s);
(6) Requirements for pipe deflection, if necessary;
(7) Type of joint restraint, if required;
(8) Plan and profile with other crossing utilities shown to scale in the profile; and
(9) Existing or proposed pressure reducing valves.
(C) Drawings for sanitary sewer facilities shall show the following:
(1) Size, type and structural class of proposed new sewer line(s), including American Society for Testing and Materials (ASTM) specifications;
(2) Plan and profile of each proposed pipeline segment with all other crossing utilities shown to scale in the profile;
(3) Bedding class;
(4) Existing sewer lines and manholes, including size, material, field-verified invert elevations and field-verified slopes;
(5) Manholes with stationing and rim and invert elevations and grade of pipe;
(6) Existing and proposed sewer service lines with size and stationing; and
(7) Existing and proposed cleanouts.
(D) Drawings for storm sewer facilities shall show the following:
(1) Size, type and structural class of proposed new sewer line(s), including ASTM specifications;
(2) Plan and profile of each proposed pipeline segment with all other crossing utilities shown to scale in the profile;
(3) Bedding class;
(4) Manholes with stationing and rim and invert elevations and grade of pipe;
(5) Inlets and inlet service lines with stationing and invert elevations; and
(6) Points of stormwater discharge.
(Prior Code, § 11.05.010.100) (Ord. 2019-9, passed 9-3-2019)
Drawings for streets and roadways shall show the following:
(A) Limit of cut or fill;
(B) Existing and proposed utilities, including manholes and valves;
(C) Plan and profile with all crossing underground utilities shown to scale in the profile;
(D) Existing and finished grades, with finished grade slopes;
(E) Vertical and horizontal curves, with curve data (minimum):
(1) Horizontal curves - PI sta, curve deflection, R, L, PC and PT stationing; and
(2) Vertical curves - PI sta and elev, K, L, stations of PTs.
(F) Profile of centerline;
(G) Profiles of left and right curb lines, if they are not the same;
(H) Any required utility adjustments;
(I) Existing and proposed signs and pavement markings;
(J) Top of curb elevations at PCs, PTs and inlets;
(K) Existing and proposed street monuments; and
(L) Typical roadway section(s), dimensioned and drawn to scale, showing:
(1) Right-of-way;
(2) Backslopes;
(3) Sidewalks;
(4) Curb and gutter;
(5) Structural section materials and depth; and
(6) Cross-slopes.
(Prior Code, § 11.05.010.110) (Ord. 2019-9, passed 9-3-2019; Ord. 2021-15, passed 12-20-2021)
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