As-built information will be provided to the “Engineer of Record” who will have a professional land surveyor prepare record drawings based on as-built information. Within 30 days after the completion and acceptance of all improvements, the Engineer for the developer shall deliver record drawings (“as-built” plans) in the form of two black line prints and one electronic copy for each of the improvements constructed. As-builts will contain the information on the design drawings, plus the following additional information:
(A) As-builts are to document changes between the design and construction. All information that is incorrect due to changes during construction will be corrected. Incorrect or no longer relevant information will be erased or struck through.
(B) Water and sewer record drawings shall include the location and depth of all service laterals; the size, location and flow line elevations of all mains; the top and flow line elevations of all manholes, valves, hydrants; and any other pertinent information.
(1) Any water and sewer facilities constructed in a horizontal or vertical location materially different than the design location will have their design location struck through and will be redrafted at the constructed location.
(2) Any dimensions or callouts (e.g., type, location, size, material, etc.) to water and sewer facilities will be corrected as necessary.
(C) Grading record drawings shall include revised contouring and directional arrows indicating the flow of stormwater, front and rear, for each lot in the subdivision.
(D) GIS Requirements. The city has implemented geographical information systems (GIS) technologies to store, manage, and maintain spatially-related data. As a result, during installation actual point coordinate locations (X, Y, and Z) shall be captured. All developers shall submit digital as-built plans according to the following requirements:
(1) Submittal requirements. As-built digital plan drawings shall be submitted showing the location and details of the actual constructed improvements. The as-built shall be submitted with a sealed cover letter from a licensed Illinois Land Surveyor indicated that the location and elevation of the following items shown in the as-built have been verified under the direct supervision of the surveyor with an error of closure of not more than one to 5,000 feet.
(2) Water system items. Inventory water system fittings and valves (elevation at top of fitting/ valve), fire hydrants (elevation to the bottom of the cap on the steamer fitting), and top of pipes every 200 feet along straight runs. Indicate pipe and valve sizes/materials.
(3) Sanitary sewer system items. Inventory manholes (cover elevation, invert elevation(s) and pipe diameter(s).
(4) Storm sewer system items. Inventory catch basins, inlets, manholes, and pipe outfalls (elevation at top of cover, bottom of throat, invert(s) and pipe diameter(s)).
(5) Property. Inventory property corner pins and easements being granted to utility companies.
(6) Datums. Submissions shall use the following geographic projection and datum:
(a) Projection. State Plan Illinois West.
(b) Horizontal datum. NAD83 (North American Datum of 1983).
(c) Vertical datum. NAVD88 (North American Vertical Datum of 1988).
(d) Datum conversion. NADCON.
(e) Unit of measure. U.S. survey foot.
(E) No building permits shall be issued for any lots within a subdivision until the record drawings have been provided to the city.
(Ord. 2009-21, § 18.5-4-23, passed 10-5-2009; Ord. 2017-03, passed 3-6-2017)