CHAPTER  500. General Improvements Requirements


12D‑501. Scope. This chapter defines the general requirements for improvements.  The improvements for subdivisions shall include all street improvements in front of all lots and along all dedicated streets to a connection with existing improvements of the same kind or to the boundary of the sub‑ division nearest existing improvements.  Layout must provide for future extension to adjacent development and to be compatible with the contour of the ground for proper drainage. All water lines, sewer lines, and any other buried conduit shall be installed to the boundary lines of the subdivision.


12D‑503. Standards for Construction Drawings. The following standards are for the purpose of standardizing the preparation of drawings to obtain uniformity in appearance, clarity, size, and style:


(1)        Copies.   The construction plans shall be submitted in triplicate.  Two sets shall be retained by the Engineer and one set shall be returned to the subdivider with approval mark of the engineer.  The approved set shall be kept available at the construction site.


(2)        Required Information.   These plans and designs shall meet the standards defined in the specifications and drawings hereinafter outlined.  The minimum information required on drawings for improvements are as follows:


(a)        All drawings and/or prints shall be clear and legible and conform to good engineering and drafting room practice.  Size of plan sheet shall be 24 x 36 with one‑half inch border on top, bottom and right sides, left side, one and one‑half inches.                            

(b)        In general, the following shall be included on drawings;             

                        (1)        North arrow

                        (2)        Scale and elevation referenced to USGS datum

                        (3)        Stationing and elevations for profiles     

                        (4)        Title block, located in lower right corner of sheet to include:

                                    (a)        Name of municipality

                                    (b)        Project title (subdivision, etc.)

                                    (c)        Specific type and location of work

                                    (d)        Space for approval signature of engineer and date.

                                    (e)        Name of engineer or firm preparing drawings with license number

(c)        Curb and gutter, drains and drainage structures, side‑walks and street surfacing shall show:

(1)        Scale: 1" = 50' horizontal; 1"= 5' or 10' vertical.

(2)        Both plan view and profiles must be shown for each side of the street; street centerline profile may be eliminated.

(3)        Stationing and top of curb elevations with curve data must be shown for all curb returns.

(4)        Flow direction and type of cross drainage structures at intersections with adequate flow line elevations.

(5)        B.M. location and elevation (use USGS datum).

(6)        Type of curb and gutter and distance back to back of curb.

            (d)        Sewer drawings shall show:

(1)        Scale: 1" = 50' or 1"= 100' horizontal; 1" = 5' or 1" = 10' vertical.

(2)        Location, size, and grade of main.

(3)        Manhole size, location, flow line elevation and top elevation.

(4)        Type of pipe.

(5)        B.M. location and elevation (use USGS datum).

            (e)        Culinary water drawings shall show:

(1)        Scale 1" = 100' or 1" = 50' horizontal; 1" = 5' or 1" = 10' vertical.

(2)        Size and location of water mains, valves and hydrants.

(3)        Type of pipe.

(4)        Minimum cover.

(5)        Connection to existing system.

(f)         Each set of plans shall be accompanied by a separate sheet of details for structures in accordance with minimum requirement established by the subdivision standards.

(1)        Drawing size: 24" x 36".

(2)        Scale of each detail.

(3)        Title block, lower right‑hand corner (same format on all sheets) including the name of the subdivision.

(4)        Completely dimensioned and described.


12D‑504.  Inspection. All construction work involving the installation of improvements in subdivision shall be subject to inspection by the municipality.  Certain types of construction shall have continuous inspection while others may have only periodic inspections.


(1)        Continuous Inspection.   Continuous inspection shall be required on the following types of work:

(a)        Laying of street surfacing

(b)        Pouring of concrete for curb and gutter, sidewalks and other structures

(c)        Laying of sewer pipe, drainage pipe, valves, hydrants, and testing.

(2)        Periodic Inspection.   Periodic inspection shall be required on the following:

(a)        Street grading and gravel base.

(b)        Excavations for curb and gutter and sidewalks.

(c)        Excavations for structure.

(d)        Trenches for laying pipe.

(e)        Forms for curb and gutter, sidewalks and structures.


On construction requiring continuous inspection, no work shall be done except in the presence of the inspector.


12D‑505. Requests for Inspection. Requests for inspection shall be made to the municipality by the person responsible for the construction.  Requests for inspection on work requiring continuous inspection shall be made three days prior to the commencing of the work.  Notice shall also be given one day in advance of the starting of work requiring periodic inspection.


12D‑506.  Construction Completion Inspection. An inspection shall be made by the Engineer after all construction work is completed. Any faulty or defective work shall be corrected by the persons responsible for the work within a period of thirty (30) days of the date of the Engineer's inspection report defining the faulty or defective work.


12D‑507. Guarantee of Work. The subdivider shall warrant and guarantee that the improvements provided for hereunder, and every part thereof, will remain in good condition for a period of two years after the date of the construction completion inspection report by the City Engineer and agrees to make all repairs to and maintain the improvements and every part thereof in good condition during that time with no cost to the municipality.


            The City Engineer shall determine when repairs or maintenance are required for improvements which have not been accepted by the municipality.  Unless unreasonable, arbitrary or capricious, the City Engineer's decision shall be binding on the subdivider.  The improvements required hereby extend, but are not limited to, the street base, and all pipes, joints, valves, backfill and compaction as well as the working surface, curbs, gutters, side‑ walks, and other accessories which are or may be affected by the construction operations.  Whenever, in the judgment of the City Engineer, the work needs repair, maintenance, or rebuilding, he shall cause a written notice to be served the subdivider and thereupon the subdivider shall undertake and complete such repairs, maintenance or rebuilding, he shall cause a written notice to be served the subdivider and thereupon the subdivider shall undertake and complete such repairs, maintenance or rebuilding.  If the subdivider fails to do so within ten days from the date of the service of such notice, the City Engineer shall have such repairs made and the costs of such repairs shall be charged to the subdivider with an additional twenty‑five per cent (25%) of the cost of the repairs levied in addition thereto for stipulated damages resulting from such failure on the part of the subdivider to make the repairs.


12D‑508. Inspection. The appropriate persons or agencies of the City shall inspect or cause to be inspected all building, fire hydrants, water supply and sewage disposal lines and systems in the course of construction, installation, or repair. Excavations for fire hydrants and water and sewer mains and laterals shall not be covered until such installations shall have been inspected and approved by the Building Inspector or City Engineer.  If such installation shall be covered before being inspected and approved, it shall be uncovered after notice to uncover has been issued to the responsible persons by the City Inspector or City Engineer.