(a) 
In addition to the requirements established by this chapter, all development within the city limits shall be designed so as to comply with all applicable city codes and ordinances as well as the City of Austin Standards, except for environmental and utility; and all development within the extraterritorial jurisdiction of the city shall comply with this chapter and all applicable city/county codes and ordinances.
(b) 
A subdivision inspection fee shall be paid to the city for the inspection of subdivision improvements, including street, drainage, water, wastewater and revegetation improvements and erosion controls used during construction. The subdivision inspection fee shall be paid prior to the approval of plans and specifications by the Engineering Department. The subdivision inspection fee shall be in accordance with the fee schedule found in appendix A of the city’s code of ordinances.
(Ordinance CO11-20-01-09-H1 adopted 1/9/20)
(a) 
Purpose.
Construction plans, based upon the approved final plat, and consisting of detailed specifications and diagrams illustrating the location, design, and composition of all improvements identified in the preliminary plan phase and required by this chapter and other applicable city ordinances, codes and policies, shall be submitted to the city for approval. In addition, any project that necessitates the construction, reconstruction or modification of existing city infrastructure shall also be submitted to the city for approval. The plans shall be kept by the city as a permanent record of required improvements in order to:
(1) 
Provide better records that facilitate the operation and maintenance of, and any future modifications to existing city infrastructure.
(2) 
Provide data for evaluation of materials, methods of construction and design.
(3) 
Provide documentation of approved public improvements to ensure that all such improvements are built to city standards and specifications.
(4) 
No final plat shall be certified by the city, and no construction activities shall commence, until such time as construction plans completely describing the on-site and off-site improvements required by this chapter and other applicable city ordinances and codes, have been approved by the Engineering Department.
(b) 
Format.
Drawings shall be on twenty-two-inch by thirty-four-inch (22"x34") sheets at generally accepted horizontal and vertical engineering scales.
(c) 
Content.
Construction plans shall include all on- and off-site improvements required to serve the proposed development as indicated on the approved preliminary plan and in compliance with applicable ordinances, codes, standards and policies of the city, and other applicable governmental entities. All construction plans shall be signed and sealed by a licensed professional engineer, licensed to practice in the State of Texas, and shall contain or have attached thereto:
(1) 
Cover sheet.
(A) 
The appropriate project name, date, and the name, addresses and phone numbers of the applicant, engineer and surveyor, etc.
(B) 
A location map showing the relation of the subdivision to streets and other prominent features in all directions for a radius of at least one (1) mile using a scale of one inch equals two thousand feet (1" = 2,000'). The latest edition of the USGS 7.5 minute quadrangle map is recommended.
(C) 
An index with consecutive sheet numbers.
(2) 
General notes.
Current City of Cedar Park subdivision construction notes.
(3) 
Street and roadway systems.
(A) 
The horizontal layouts and alignments showing geometric data and other pertinent design details. The horizontal layout shall also show the direction of stormwater flow and the location of manholes, inlets and special structures;
(B) 
Vertical layouts and alignments showing existing and proposed centerline, right and left right-of-way line elevations along each proposed roadway;
(C) 
Typical right-of-way cross-sections showing pertinent design details and elevations as prescribed in the city standard details and specifications;
(D) 
Typical paving sections showing right-of-way width, lane widths, median widths, shoulder widths, and pavement recommendations;
(E) 
Attendant documents containing any additional information required to evaluate the proposed roadway improvements, including geotechnical information and traffic impact studies; and
(4) 
Drainage improvements.
(A) 
Detailed design of all drainage facilities as indicated in the preliminary plan phase, including typical channel or paving section, storm sewers and other stormwater control facilities.
(B) 
Typical channel cross-sections, plan and profile drawings of every conduit/channel shall be shown.
(C) 
Existing and proposed topographic conditions indicating one-foot contour intervals for slopes less than 5%, two-foot contour intervals for slopes between five percent (5%) and ten percent (10%), and five-foot contour intervals for slopes exceeding ten percent (10%), and referenced to a United States Geological Survey or Coastal and Geodetic Survey benchmark or monument.
(D) 
Attendant documents containing design computations in accordance with this chapter, and any additional information required to evaluate the proposed drainage improvements.
(E) 
A copy of the complete application for floodplain map amendment or revision, as required by the Federal Emergency Management Agency (FEMA), if applicable.
(5) 
Erosion and sedimentation controls.
(A) 
Proposed fill or other structure-elevating techniques, levees, channel modifications and detention facilities.
(B) 
Existing and proposed topographic conditions with vertical intervals not greater than one (1) foot referenced to a United States Geological Survey or Coastal and Geodetic Survey benchmark or monument.
(C) 
The location, size, and character of all temporary and permanent erosion and sediment control facilities with specifications detailing all on-site erosion control measures which will be established and maintained during all periods of development and construction.
(D) 
Contractor staging areas, vehicle access areas, temporary and permanent spoils storage areas.
(E) 
A plan for restoration for the mitigation of erosion in all areas disturbed during construction.
(6) 
Water distribution systems.
(A) 
The layout, size and specific location of the existing and proposed water mains, pump stations, storage tanks and other related structures sufficient to serve the proposed land uses and development as identified in the preliminary plan phase and in accordance with the city standard details and specifications.
(B) 
The existing and proposed location of fire hydrants, valves, meters and other fittings.
(C) 
Design details showing the connection with the existing city water system.
(D) 
The specific location and size of all water service connections for each individual lot.
(E) 
Attendant documents containing any additional information required to evaluate the proposed water distribution system.
(7) 
Wastewater collection systems.
(A) 
The layout, size and specific location of the existing and proposed wastewater lines, manholes, lift stations, and other related structures sufficient to serve the land uses and development as identified in the preliminary plan phase, in accordance with all current city standards, specifications, and criteria for construction of wastewater systems.
(B) 
Plan and profile drawings for each line in public rights-of-ways or public utility easements, showing existing ground level elevation at centerline of pipe, pipe size and flow line elevation at all bends, drops, turns, and station numbers at fifty-foot intervals.
(C) 
Design details for manholes and special structures. Flow line elevations shall be shown at every point where the line enters or leaves the manholes.
(D) 
Detailed design for lift stations, package plants or other special wastewater structures.
(E) 
Attendant documents containing any additional information required to evaluate the proposed wastewater system, and complete an application for state health department approval.
(8) 
Street lighting.
(A) 
The location, size, type and description of street lights according to city standard details and specifications.
(B) 
All electric service lines to serve street lights shall be located entirely within the city’s right-of-way, unless approved in writing by the Director of Engineering or his/her designee.
(9) 
Street signs.
The location, size, type and description of street signs according to city standard details and specifications.
(10) 
Speed limit signs and permanent traffic barricades.
The location, size (where applicable), and type of speed limit signs and permanent traffic barricades according to city standard details and specifications.
(11) 
Sidewalks.
(A) 
All sidewalks shall be designed and constructed in accordance with city standard details and specifications, Criteria Manual, mobility master plan and any other applicable city codes and ordinances.
(B) 
Sidewalks associated with a residential subdivision that are not located adjacent to a residential lot are required to be built by the developer at the same time as the subdivision improvements.
(C) 
Sidewalks associated with a residential subdivision that were not built with the subdivision improvements and are adjacent to residential lots are required to be built by the homebuilder.
(D) 
Sidewalks associated with commercial development are required to be constructed on all sides of all streets within and immediately adjacent to the proposed development.
(12) 
Improvements for parks and other public and common areas.
As identified and/or approved on the preliminary plan.
(13) 
The location, size and description of all significant trees (to remain and to be removed), and replacement trees to meet the requirements of landscape and tree ordinance.
(14) 
Landscaping and screening.
The location, size and description of all landscaping and screening materials as required by the zoning ordinance and landscape and tree ordinance.
(15) 
Design criteria.
Final design criteria, reports, calculations, and all other related computations, if not previously submitted with the preliminary plan.
(16) 
Cost estimates.
A cost estimate of each required improvement, prepared, signed and sealed by a professional engineer licensed to practice in the State of Texas.
(d) 
Procedure.
After all necessary approvals of the preliminary plan have been granted, construction plans, together with a completed application form and review fee, shall be submitted to the Engineering Department for approval.
(1) 
Construction plans may be submitted for review and approval simultaneously with a final plat, provided however that the final plat shall not be approved until the construction plans have been approved. If the construction plans and the final plat are to be reviewed simultaneously, a complete application for construction plans and a complete application for final plat must be submitted to the city simultaneously.
(2) 
City staff shall review all construction plan submittals for completeness at the time of application. If in the judgment of the city, the construction plan submittal substantially fails to meet the minimal informational requirements as outlined above, it will not be accepted for review.
(3) 
The Engineering Department shall review the construction plans to insure compliance with this chapter, and other applicable city ordinances, codes, standards and specifications, and good engineering practices.
(4) 
For projects located within the city’s extraterritorial jurisdiction, the construction plans and attendant documents shall also be provided to the county for review and approval. The applicant shall be responsible for any additional information required by the county for construction plan approval.
(5) 
For projects located within the Lake Travis watershed, the construction plans shall be provided to the city for compliance with the Lake Travis and Upper Highland Lakes Nonpoint Source Pollution Control Ordinance.
(e) 
Approval.
Within thirty (30) days of the date on which all required information has been accepted for review, the Engineering Department shall either approve or disapprove the construction plans.
(1) 
If the construction plans are disapproved, the Engineering Department shall notify the applicant, in writing, of disapproval and indicate the requirements for bringing the construction plans into compliance.
(2) 
If construction plans are approved, then the Engineering Department shall sign the cover sheet of the construction plans, returning one (1) signed copy to the applicant and retaining the other signed copy for city records.
(3) 
The applicant should be aware that specific approvals from other agencies may be required.
(4) 
All improvements shown in the approved construction plans shall be constructed pursuant to and in compliance with the approved plans, except as otherwise specifically approved.
(f) 
Revision.
Where it becomes necessary, due to unforeseen circumstances, for corrections to be made to construction plans for which approval has already been obtained, the Engineering Department shall have the authority to approve such corrections when, in his/her opinion, such changes are warranted and also in conformance with city requirements. Approval of such changes agreed to between the applicant and Engineering Department shall be noted by initialing and dating by both parties on the two (2) original signed copies of the construction plans. Revisions to the construction plans shall be reviewed and approved by the Engineering Department prior to construction of the revisions.
(g) 
Responsibility.
Notwithstanding the approval of any construction plans by the council, the Engineering Department, the applicant and the engineer that prepares and submits such plans and specifications shall be and remain responsible for the adequacy of the design of all such improvements; and nothing in this chapter shall be deemed or construed to relieve or waive the responsibility of the applicant or his/her engineer for or with respect to any design, plans and specifications submitted.
(Ordinance CO11-20-01-09-H1 adopted 1/9/20; Ordinance CO34.23.09.28.E1 adopted 9/28/2023)