(A) Monuments. Monuments shall be placed at all block corners, angle points, points of curves in streets, and at intermediate points as shall be required by the Plat Officer. Permanent monuments erected in such subdivisions shall be of galvanized iron pipe not less than one inch in diameter and 24 inches in length; or if stone or concrete, shall be not less than four inches in diameter and 24 inches in length.
(B) Utility and street improvements.
(1) Utility, and street improvements shall be provided in each new subdivision in accordance with the standards and requirements described in the following schedules.
(2) The standards and specifications for each general type of development shall be:
(a) For business, industrial, institutional and similar types, as determined by the City Council with the advice of the City Engineer;
(b) For residential types, in accordance with the following:
1. Within the corporate limits, and within one and one-half miles beyond the corporate limits, public or private water supply per standards approved by the City Engineer;
2. Within the corporate limits, and within one and one-half miles beyond the corporate limits, public or private sanitary disposal facilities per standards approved by the City Engineer. Stub-up lines shall be located at each lot and shall extend at least one foot inside the property line and the curb marked with the letter “S”;
3. Surface drainage in approved paved gutters and in piped underground channels, the construction, capacity and flow of which are approved by the City Engineer;
4. Street gradient and cross-section, per plans approved by the City Engineer;
5. Pavement width:
a. Collector streets: 36 feet face to face of curbs; and
b. Minor streets: 26 feet.
6. Pavement type shall be either eight-inch monolithic concrete per § 48, State Specifications, or any combination of the following bases and surfaces:
a. Bases:
i. Seven-inch gravel compacted, per § 29, State Specifications;
ii. Seven-inch crushed compacted stone, per § 30, State Specifications;
iii. Six-inch concrete, per § 32, State Specifications; and
iv. Six and one-half-inch compacted soil cement.
b. Surfaces:
i. Two-inch asphaltic concrete plant mixed, per § 43 or § 46, State Specifications; and
ii. Two-inch bituminous machine mix, per § 40, State Specifications.
7. Curb and/or gutter, if provided, of concrete, gradient and cross-section as approved by City Engineer;
8. Street trees, if provided, location and type as approved by the Plan Commission;
9. Planting strips, gradient, drainage and surface treatment, as approved by City Engineer;
10. Street name signs at all intersections, conforming to standard for the city;
11. Street numbering system as approved by City Council;
12. Alleys, when provided, paved full width with eight-inch monolithic concrete per § 48, State Specifications; and
13. Sidewalks, when provided, shall be of monolithic concrete, four inches in thickness, in location and with pitch, and surface as approved by the City Engineer, with a required width of five feet on collector or multiply-family residence streets, and four feet on single-family residence streets.
(c) For low density residential types with individual lots, averaging approximately 10,000 square feet of more, at the discretion of the City Engineer:
1. The requirements of division (B)(2)(b)2., (B)(2)(b)3., (B)(2)(b)5., (B)(2)(b)6., and (B)(2)(b)7. above may be waived or modified with the substitution of the following:
a. Private sanitary disposal;
b. Surface drainage in swales and culverts;
c. Pavement width 18 feet; and
d. Eight-inch gravel or crushed stone pavement per § 36 State Specifications.
2. Note: state spec referred to herein are the Standard Specifications for Road and Bridge Construction, adopted January 2, 1958 by the Division of Highways, Department of Public Works and Buildings, State of Illinois.
(Ord. passed 4-11-1960)