§ 5.05. Construction plans.

A.

General.

1.

All improvements shall be designed in accordance with the city design criteria referenced as part of this ordinance.

2.

Eight copies of complete construction plans, specifications, engineering calculations, and detailed cost projections, for streets, drainage, sanitary sewers, water distribution, and any other improvements to be constructed, are required to be submitted with the final plat. Construction plans must be 100 percent complete at the time of submittal. Any incomplete sets of construction plans shall be returned unreviewed.

3.

The construction plans shall be submitted on standard 24" × 36" sheets.

4.

Each sheet of the construction plans shall contain a title block, including space for the notation of revisions. This space is to be completed with each revision to the plan sheet and shall clearly note the nature of the revision and the date that the revision was made.

5.

Each sheet shall bear the seal and signature of the licensed professional engineer in the state who prepared the plans.

6.

Each sheet of the construction plans shall include north arrow, scale, date, and benchmark description to sea level datum. Scales shall be one inch equal 20, 40 or 50 feet horizontally and 1 inch equal 2, 4, or 5, feet vertically.

7.

The title sheet of the construction plans shall bear a signature block for approval for construction which shall read as follows:

THESE CONSTRUCTION PLANS HAVE BEEN REVIEWED BY, AND RELEASED FOR CONSTRUCTION, BY THE CITY OF SAGINAW. THE CITY HAS DETERMINED THAT THEY CONTAIN THE REQUIRED DOCUMENTS AND MEET OR EXCEED MINIMUM STANDARDS FOR THE CONSTRUCTION OF THE REQUIRED IMPROVEMENTS. THE CITY'S REVIEW AND RELEASE OF THESE PLANS DOES NOT REPRESENT THAT THE CITY HAS RE-ENGINEERED THE IMPROVEMENTS BUT ONLY THAT THE MATERIALS SUBMITTED MEET MINIMUM STANDARDS. THE DESIGN ENGINEER AND/OR CONTRACTOR IS RESPONSIBLE FOR THE UNDERLYING ENGINEERING AND RECOGNIZES THAT SPECIFIC SITE CIRCUMSTANCES AND CONDITIONS MAY REQUIRE IMPROVEMENTS CONSTRUCTED TO EXCEED MINIMUM STANDARDS CONTAINED IN THE CITY'S DESIGN GUIDELINES. THE DESIGN ENGINEER AND CONTRACTOR ARE RESPONSIBLE FOR THE ACCURACY OR CORRECTNESS OF THE PLANS AND SPECIFICATIONS CONTAINED HEREIN.

DIRECTOR OF PUBLIC WORKS / COMMUNITY DEVELOPMENT DIRECTOR ____________

CITY ENGINEER ____________

CITY FIRE CHIEF ____________

CITY OPERATIONS SUPERINTENDENT ____________

B.

Paving plans.

1.

The construction plans shall include a plan and profile of each street with stationing, top of curb grades, and existing and proposed ground lines. The typical cross-section of proposed streets shall show the width of roadway, pavement type, and location and width of sidewalk. Plans and specifications shall conform to city design criteria referenced by this ordinance.

2.

Three copies of the geotechnical report recommendations for pavement thickness and cement or lime content, as required by the design criteria, shall be submitted with the construction plans.

C.

Sanitary sewer and water plans. The construction plans shall include a plan and profile of proposed sanitary sewers, with stationing, grades and pipe sizes indicated and showing locations of manholes, etc., and a plan of the proposed water distribution system showing pipe sizes and location of valves, fire hydrants, and fittings, etc., in conformance with city design criteria.

D.

Floodplain/drainage study.

1.

The purpose of this section shall be to establish the policies of the city governing floodplains, drainageway and storm water management to avoid the danger of flooding and ensure that proposed developments can be adequately served by existing and/or proposing drainage facilities. The purpose of these policies is to protect the general health, safety and welfare of the public by reducing the risk of flooding private property and public right-of-ways. The National Flood Insurance Program (NFIP) Guidelines Section § 65.3 and associated references are hereby incorporated into this ordinance by reference.

2.

A floodplain/drainage study is required for any property which meets any of the following criteria:

• Lies wholly or partially within a flood hazard area as delineated by the current flood insurance rate maps as provided by FEMA.

• The land use intensity is greater than that shown in the comprehensive master plan.

The city may require that the developer provide, at the developer's expense, a drainage study of the proposed development. Three copies of this study shall be submitted with the final plat.

3.

The drainage study shall be prepared and sealed by a licensed professional engineer in the state with experience in hydrology and hydraulics engineering.

4.

If any portion of the floodway is proposed to be modified or a culvert or bridge is proposed to cross a FEMA-designated floodplain, the developer shall prepare a conditional letter of map revision (CLOMR) request to FEMA in conjunction with, or prior to, submittal of the construction plans. The CLOMR must be approved by FEMA before any construction may occur within the area designated as floodplain by FEMA or the city. The developer shall gain city approval of the CLOMR prior to submittal of the CLOMR request to FEMA.

5.

A CLOMR approval must be followed up by a letter of map revision (LOMR) request after approved improvements within the floodplain are completed. The developer shall gain city approval of the LOMR prior to submittal of the LOMR request to FEMA.

E.

Storm drainage plans.

1.

The construction plans shall include a plan and profile of proposed storm sewers and/or channels, showing stationing, hydraulic data, pipe grades and sizes, manholes, inlets, pipe connections, outlet structures, etc., in conformance with city design criteria.

2.

The construction plans shall include a general location map of the subdivision showing the entire contributing watershed (a U.S.G.S. quadrangle is satisfactory). Topographic maps with two-foot contours are available from the city in hard copy format (electronic versions are not available).

3.

The construction plans shall include a drainage area map as well as all calculations showing the anticipated storm water flow, including watershed area, percent runoff, and time of concentrations shall be submitted showing basis for design. The effects of detention, as applicable, shall be included on the plans.

4.

The construction plans shall include a detailed plan for any bridges, culverts, catch basins, any other drainage structures, or any other improvements to be made. Any specialized details for drainage structures must be included on the plans.

F.

Grading plan. Any proposed changes in topography shall be shown by contour lines on a basis of five-foot intervals in terrain with a slope of five percent or more, and on a basis of one-foot intervals in terrain with a grade less than five percent.

G.

Design summary. A separate document or report entitled "Engineering Design Summary" may be required as directed by the city engineer, and included with the submittal of the construction plans and specifications. It shall summarize calculations and other such engineering information pertaining to the major items of design. It shall be used during the review to determine whether the facilities proposed for construction have been designed in accordance with the intent of the city design criteria.

H.

Landscape plan.

1.

Landscaping with irrigation shall be required for all residential subdivision development. All developed property having a side or rear yard, which abuts an arterial or collector street, shall be landscaped. The area landscaped shall be in the public right-of-way as directed by the city council through subdivision approval.

Landscaping will be required at the ratio indicated:

• One canopy tree per 70 linear feet of frontage,

• One understory tree per 35 linear feet of frontage, and

• One shrub per seven linear feet of frontage.

• Ground cover—All area not covered by lawn grasses.

• Lawn grasses—All area not covered by other landscaping.

All landscaping and irrigation improvements installed in city right-of-way shall be maintained by the developer for a period of two years from the date of city acceptance of these improvements.

2.

A landscape plan shall be submitted and shall conform to the guidelines established in the city landscape ordinance. It is city policy to protect and preserve native trees and vegetative cover to the maximum practical extent in the development of subdivisions. Because some trees and vegetation will be destroyed during construction by the developer, some replacement will be required. The tree replacement should be addressed in the landscape plan, conform to guidelines established in the landscape ordinance and city zoning ordinance, and must be verified prior to final acceptance of the subdivision improvements by the city.

For residential subdivisions and for non-residential subdivisions where the landscaping occurs in common areas to be maintained by a homeowners association, these plans shall include:

• Edge treatment along major and minor arterials and collectors.

• Subdivision entry features, including monument signs (all monument signage must conform to guidelines established in the city sign ordinance).

• Screening walls.

• Required irrigation systems.

3.

All streetscaping shall be shown on the landscape plan and shall be in conformance with the city landscape ordinance.

I.

Erosion control plan. The developer shall submit an erosion control plan in compliance with city design criteria.

J.

Signage plan. The developer shall submit a signage plan in compliance with city design criteria and the current Texas Manual on Uniform Traffic Control Devices .