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City of Frisco Engineering Standards

City of Frisco Engineering Standards

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<strong>Engineering</strong> <strong>Standards</strong><br />

Version 6/19/12<br />

Water features and detention facilities with permanent pools must obtain a TCEQ water rights<br />

permit if applicable. Refer to TCEQ for water rights regulations.<br />

For permanent pool ponds without a water rights permit, the Engineer shall provide a signed<br />

statement to the <strong>City</strong> stating the water rights permit is not required.<br />

4.10 Miscellaneous Drainage Requirements<br />

A. Lot Drainage - Lot to lot surface drainage is prohibited. Pad elevations shall be no less than 12”<br />

above curb elevation. Figure 4 is provided below for reference when performing lot grading<br />

designs. Lot grading type and finished floor elevations shall be shown on the construction plans.<br />

Type B and Type C Lot Grading must back to alleys, open space, or drainage easement. Type C<br />

Lot Grading may only be used with approval <strong>of</strong> <strong>Engineering</strong> Service. Refer to the International<br />

Residential Building Code (IRC) Section 401.3 (latest version) for additional requirements.<br />

Figure 4<br />

Typical Lot Grading Patterns<br />

B. Storm Drain Materials<br />

1. All public storm sewers shall be reinforced concrete.<br />

2. All storm sewers under a fire lane or roadway and within a drainage easement shall be<br />

reinforced concrete. Any structure under a fire lane must be designed to withstand applicable<br />

loadings, including loading <strong>of</strong> a fire apparatus.<br />

C. The minimum finished floor elevation for any lot adjacent to a drainage feature shall be 2’ above<br />

the adjacent 100 year fully developed water surface elevation and shall be shown on the final plat.<br />

Section 4 – Drainage Design Requirements May 2012 Page 4-28

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