(A) General.
(1) Drafting standards and design practices shall be equal to those standards and practices representative of the profession in the preparation of plans for construction requiring a high degree of reliability. The developer’s engineer shall furnish to the city any working notes, calculations and supplemental drawings used in the preparation of these plans for the proposed work in the development on request. The developer shall require his or her engineer to furnish three copies of all plans to be reviewed by the city. These plans shall be sufficiently detailed to enable the facilities to be constructed according to the engineer’s intent with limited assistance from the engineer during the construction phase. The responsibility of the developer’s engineer to the city shall end when all plans for which he or she is responsible have been approved by the city, all construction has been completed and accepted by the city, and a set of reproducible "as built" plans of all required construction have been furnished to the city by the Engineer.
(2) At his or her expense the developer shall employ an independent testing lab to test all compaction densities where specific compaction requirements are stated. These results shall be submitted to the city prior to commencing the next phase of work. The cost of all testing shall be borne by the developer.
(B) Drawings.
(1) Street plan and profile sheets shall be submitted for all proposed streets. Profiles shall be at a scale of one inch equals 40 feet horizontal and one inch equals four feet vertical, or one inch equals 50 feet horizontal and one inch equals five feet vertical.
(2) The profile shall include the following minimum information: top of curb grades at 50-foot interval slopes, vertical curve data, beginning and ending stations of vertical curves, location of utility crossings, storm drain pipe and elevations may be shown on the same sheet or may be on a separate sheet for clarity, benchmark station and elevations as may be needed for information. Plans shall include the following minimum information: all widths, stations of P.C. and P.T. for horizontal curves, all horizontal curve data, distances and bearing, the location of adjacent property corners and lot lines, lot and block designations, all utilities crossing or adjacent, the size and location of all storm sewer construction and intersection streets.
(C) Streets. Should street, sidewalk or alley construction be required, refer to the city’s subdivision ordinance for the requirements.
(D) Drainage. Drainage design and requirements shall be in accordance with the City of Fort Worth, Texas requirements.
(E) Water system.
(1) All mains must extend to the borders of the development, to facilitate future extensions of the system.
(2) Fire hydrants shall generally be placed so that every structure is within a hose laying length of 250 foot (road accessible) from the fire hydrant. Fire hydrants will be installed with isolation valves.
(3) Water lines shall normally be PVC meeting the requirements of AWWA C900 or C905, DR18, Class 150. The minimum water line size for development shall be six inches. Smaller line sizes may be reviewed on a case by case basis.
(4) Backflow prevention devices may be required on some developments.
(5) Fire flow detector checks are required on all fire lines to buildings.
(F) Sewer system.
(1) Sewer mains must extend to the borders of the development, to facilitate future extensions of the system.
(2) Sewer lines shall normally be PVC SDR 35 meeting the requirements of ASTM D 3034. The minimum sewer line size for development shall be eight inches. Smaller line sizes may be reviewed on a case by case basis.
(3) The maximum distance between manholes shall be 500 feet. Manholes shall be provided at all points of horizontal change. Manholes shall be provided at all vertical points of intersection.
(4) Grease traps on the service line will be required on all food service type commercial development.
(5) Connections to existing manholes shall be accomplished by core drilling the manhole.
(G) Minimum dimensions for off-street parking.
(1) Ninety-degree angle parking: each parking space shall be not less than nine feet wide nor less than 18 feet in length, maneuvering space shall be in addition to the parking space and shall be no less than 24 feet perpendicular to the building or parking line.
(2) Sixty degree angle parking: each parking space shall be not less than nine feet wide nor less than 20.1 feet in length when measured at right angles to the building or parking line. Maneuvering space shall be in addition to the parking space and shall be no less than 19.5 feet (for two-way traffic the aisle width not less than 22 feet in length) perpendicular to the building or parking line.
(3) Forty-five degree angle parking: each parking space shall be not less than nine feet wide nor less than 19 feet in length when measured at right angles to the building or parking line. Maneuvering space shall be in addition to the parking space and shall be no less than 17 feet (for two-way traffic the aisle width not less than 21 feet in length) perpendicular to the building or parking line.
(4) When a fire lane is determined to be necessary by the Fire Marshal, the fire lane shall be a minimum of 20 feet in width.
(5) When off-street parking facilities are located adjacent to a public alley, the width of the alley may be assumed to be a portion of the maneuvering space requirement.
(6) Where off-street parking facilities are voluntarily provided (facilities not required by this chapter), the off-street parking facilities shall comply with the minimum requirements for parking and maneuvering space herein specified.
(H) Parking lot pavement section.
(1) Standard pavement.
(a) The standard pavement for parking lots shall be a minimum of five inches of reinforced concrete on scarified, compacted and modified sub grade.
(b) If the P.I. of the sub grade is 15 or greater the sub grade shall be lime modified with Type A Hydrated Lime in the amount of seven percent by unit dry weight of the sub grade to a depth of six inches.
(c) Concrete shall have a minimum compressive strength of 3,000 pounds per square inch (psi). Reinforcement shall consist of No. 3 Bars (grade 60) on 18-inch centers both ways.
(2) Consideration. Consideration may be given to permitting asphalt paving provided that the developer provides the city with a geotechnical investigation of the site which includes alternate pavement recommendations.
(Ord. 4-4-02, passed 4-4-2002; Ord. 9-05-2002, passed 9-5-2002; Ord. 6-3-04, passed 6-3-2004; Ord. 10-20-05, passed 10-20-2005)