§ V. Required improvements.
A.
General requirements. All improvements required under these regulations shall be constructed in accordance with the City of Montgomery Specifications of Construction; and/or the specifications of the Water Works and Sanitary Sewer Board of the City of Montgomery; traffic engineering department specifications; and under the supervision of the city engineer, city traffic engineer, and/or manager of the water works and sanitary sewer board and to their satisfaction. All sewers, drains, water lines, gas mains, street lights, cable television, and telephone and electrical conduits shall be installed and earth backfill compacted before streets, sidewalks, or alleys are paved, with water and sewer connections provided for each lot. All sanitary and storm sewers shall be of sufficient size to provide for future extension to serve the tributary area.
B.
Street and road improvements. All roadways shall comply with the following standards as hereafter defined:
1.
Jurisdiction shall include the corporate limits and police jurisdiction of the City of Montgomery, Alabama, as now or hereafter established.
2.
All roadways shall be provided with pavement with curb and gutters, and constructed in accordance with the City of Montgomery, Alabama, Specifications of Construction. Curb to curb distance shall be as required in section IV, part A, paragraph (8) of these regulations. Pavement without curb and gutters will not be permitted, and neither will curb and gutters without paving.
3.
The city planning commission may grant variances to the requirements of this section if it is shown that: (a) compliance therewith will cause extraordinary hardship on the developer; (b) that all lots to be developed are in excess of three acres in area; (c) all streets involved are of a minor nature; and (d) that no through streets are to be developed connecting with other complying subdivisions. No variance may be granted that permits a roadway that has less than the following minimum standards: (a) 24 feet in width, (b) a gravel surface; (c) a thickness as recommended and approved by the city engineer and city traffic engineer; and (d) suitable shoulders and side ditches shall be provided.
4.
Where street construction changes from curb and gutter section to ditch section; or where street construction changes from ditch section to curb and gutter section; inlets, storm sewers, and side drains shall be provided to take care of storm water, in accord with the requirements of the city engineer and the county engineer when construction extends into the county's jurisdiction.
C.
Sidewalks. The street cross-section of all streets shall provide for the installation of paved sidewalks adjacent to and within the street right-of-way as required in the minimum standards as follows:
1.
Both sides of arterial streets and highways.
2.
One side of secondary (collector) streets.
3.
One side of minor streets.
4.
In pedestrian easements.
5.
In the case of a permanent turn-around at the end of a dead-end street, the sidewalk shall be extended to the curb line of the paved cul-de-sac (turn around).
Cul-de-sacs for future street extensions shall have sidewalks around one side to the street property line in accordance with engineering requirements.
Sidewalks where required shall be a minimum of five feet wide in residential areas and a minimum of seven feet wide in a business area, and shall be placed adjacent to the property line except in pedestrian easements.
Sidewalks shall have depressed curbs or other appropriate measures to accommodate the physically handicapped, in accordance with engineering requirements.
The requirements of this section may be waived by the planning commission in rural areas when the commission is satisfied that the sidewalks would not serve a useful purpose.
D.
Sanitary facilities.
1.
Sanitary sewers shall be laid in all streets, service connections installed to property lines, and connections made to trunk line sewers. Data and improvements shall be provided in each subdivision as prescribed in the following:
(a)
Two copies of the sewer plan, designed by a registered civil engineer showing the proposed sewer plan and profile, shall be submitted to and approved by the engineer of the water works and sanitary sewer board prior to beginning installation of the sewer system. The plan shall be prepared from an actual engineering survey and shall include, but is not limited to, the following information and data:
(1)
Station at each manhole;
(2)
Property or lot lines and present owners if sewer is on private property;
(3)
Lot and block number;
(4)
Invert elevation at each manhole;
(5)
Grade of sewer between manholes expressed in percent; and
(6)
Bench mark elevation and description at least once at each 1,000 linear feet interval along the sewer line. Whenever possible, U.S.C. and G.S. data shall be used.
(b)
Prior to the beginning of construction, the engineer shall set construction stakes as follows, and shall furnish the construction foreman with a cut sheet showing the cut to flow line of the pipe:
(1)
An offset tack line with hubs not over 50 feet apart. Under wet conditions, the hubs shall be set not over 25 feet apart.
(2)
Each hub shall have a guard stake showing the station on one side and the cut to flow line of pipe on the other.
(3)
Cuts shall be calculated and marked to the nearest 1/100 of a foot.
(4)
Stakes shall be set at each point where a wye is required or indicated on the cut sheet by station number.
(c)
A qualified sewer contractor shall be employed by the developer to install the sewer. The installation shall be done under the direction and according to specifications of the water works and sanitary sewer board, and shall conform exactly to the approved plan with no exception unless approved by the engineer of said board. The developer shall hold the sewer contractor responsible to his obligations until the completed project has been given final approval and acceptance by the water works and sanitary sewer board.
(d)
All manhole castings shall be adjusted to the finished surface of paving and all manholes shall be left free of dirt, asphalt, and other debris.
(e)
Upon completion of the project, the developer shall supply the water works and sanitary sewer board engineer with two copies of the plan and profile drawing certified by the project engineer showing the sewer as built with exact location of each service connection (lateral) indicated. Each service (lateral) indicated on the plans shall be located and marked with detectable markers approved by the water works and sanitary sewer board engineer.
(f)
Final approval. The project will not be accepted by the city until the developer has complied with all requirements of the water works and sanitary sewer board.
2.
Septic tank systems may be permitted in the police jurisdiction whenever it is determined by the health department that sanitary sewerage is not available and upon securing the approval for such installation from the health department. This approval is contingent upon compliance with the subdivision criteria of the health department.
E.
Storm drainage. Storm sewers or drains shall be provided in each subdivision. They shall be designed to carry not less than the storm water from a maximum projected rainfall to occur once in 25 years, with runoff factor of 90 percent for pavements and buildings and a variable runoff factor depending on the topography of the ground for other areas. All drainage facilities and appurtenances shall meet the specifications for street paving and storm sewer as set forth by the Engineering Department of the City of Montgomery.
F.
Water mains. Water main plans will be reviewed and approved by the water works and sanitary sewer board and the Montgomery Fire Department, and will be laid provided, but not limited to, the following conditions being met:
1.
That the streets have been graded to an approved line acceptable to the private project engineer and to the city engineer.
2.
Construction on all sanitary sewers and storm sewers, including catch basins, etc., has been completed.
3.
The private project engineer has established a definite curb line and grade on the street.
G.
Performance bond and supervision.
1.
The subdivider shall be responsible for the installation of all the required improvements listed in section V hereof, and shall also be responsible for the maintenance of pavement, curb and gutter, sidewalks, and the drainage system in the subdivision for a period of one year.
If the subdivider wishes to proceed with the filing of the plat prior to completing the required improvements, he shall file with the city engineer a performance bond which is available to the city (or in appropriate cases, the county) and in sufficient amount to assure such improvements, said bond to be executed with a surety satisfactory to the city engineer and county engineer if such improvements extend into the county's jurisdiction.
A bond shall be required for the maintenance requirements conditioned to cover faulty material, unskilled workmanship, or faulty plans, etc. The bond shall be effective for one year from the date of final approval by the city engineer and in the amount set by the engineer.
2.
All underground work consisting of primary sewers, water lines, gas mains, and electrical and telephone conduits shall be installed and earth backfill compacted before paving is laid.
For those utilities determined to be optional by the city engineer, all underground work within the paving limits consisting of ducts, conduit, street intersections, etc., shall be installed and all earth backfill compacted before paving is laid. In subdivisions where gas shall be an optional utility, gas mains shall be installed at street intersections.
H.
Monuments. Iron pins of no less than 30 inches long, nor less than three-fourths inch in diameter, shall be set flush with the ground at every lot corner.
I.
Street identification signs and marker. The subdivider shall be responsible for the installation of all street identification signs and/or markers in compliance with the design standard as set forth by the city traffic engineering department; and no sign shall be installed without first receiving approval from the city's traffic engineer.