§ 6.1.10. Water system.

(A)

Required. Water mains properly connected with the City water supply system shall be provided as to adequately serve all lots and sites shown on a subdivision plat for the purpose of both domestic use and fire suppression. Pertinent specifications from the City and other regulatory bodies must be followed.

(B)

Design standards.

(1)

Size. All public water mains shall have a minimum diameter of eight inches unless a reduced size is specifically allowed by the City Engineer.

(2)

Fire protection provisions.

(a)

Maximum length of dead end mains shall be as follows:

i.

Single family and duplex residential districts maximum dead end of 500 feet, provided the hydrant will deliver 1,000 gallons per minute (GPM) at 20 PSI residual pressure.

ii.

Multi-family residential districts with buildings two stories or less in height - maximum 400 feet, provided the fire hydrant will deliver 1,500 GPM at 20 PSI residual.

iii.

Multi-family residential districts more than two stories in height and all commercial, business, industrial and special hazard districts - maximum 300 feet, provided the fire hydrant will deliver 2,000 GPM at 20 PSI residual. Dead end mains normally will only be used for fire protection purposes to supply fire hydrants, fire pumps, standpipe systems, automatic fire sprinkler systems and similar devices. Domestic supplies normally will be connected to circulating mains to minimize bacteriological issues.

iv.

All fire hydrants shall be placed in a position so as to be accessible at all times from a paved road. [Amd. Ord. 28-01 5/15/01]

(b)

Fire hydrant spacing shall be in accordance with the following:

i.

Single family and duplex residential districts: Not more than 500 feet between hydrants.

ii.

Multi-family residential districts (townhouses, garden apartments, cluster developments, and the like and similar buildings two stories or less in height): Not more than 400 feet between hydrants.

iii.

Multi-family residential districts with buildings more than two stories in height, all commercial districts, all business districts, all industrial districts, and special hazard applications: Not more than 300 feet between hydrants.

iv.

Areas with divided or multi-lane road systems should have hydrant distribution on both sides of the highway, utilizing spacing criteria listed above when existing and proposed parallel mains will support this criteria.

v.

Measurement of spacing shall be by way of road travel.

DELETED (c) AND RE-LETTERED BELOW. [Amd. Ord. 15-10 7/20/10]

(c)

Fire flow shall be based on the most recent Insurance Service Office (ISO) table for determining fire flow requirements. Buildings which are protected throughout with complete automatic fire sprinkler protection in accordance with the appropriate National Fire Protection Association Standard 13 shall only be required to meet the flow requirement within that standard. The Fire Chief may modify fire flow requirements in consideration of unusual circumstances or building features and process hazards. [Amd. Ord. 15-10 7/20/10]; [Amd. Ord. 31-93 4/13/93

The Engineer of Record will submit to the Public Utilities Department with the preliminary water distribution drawings, two copies of the hydraulic calculations for verifying required fire flow, signed and sealed by a registered professional engineer in the State of Florida.

The Engineer of Record will perform fire flow tests in the presence of the Public Utilities Department Inspector.

(d)

A double check valve assembly shall be the minimum requirement on all fire suppression water lines longer than 25 feet. The double check valve assembly shall be installed within 25 feet of the distribution line. The assembly shall be installed in accordance with the Public Utilities Department's latest specification and standard details. The double check valve assembly on the fire suppression water line shall not be required if an active water service connection with required backflow prevention device is tapped within 25 feet of the end of the fire suppression line.

Deleted Subsection 6.1.10(B)(3), "Prohibition of Interconnections"; Subsection 6.1.10(B)(4), "Limitation on Number of Structures Per Meter"; Subsection 6.1.10(B) (5),"Prohibition on Use of City Water for Irrigation"; and Subsection 6.1.10(B)(6,) "Water Meter Sizing" in Their Entirety. [Amd. Ord. 28-01 5/15/01]

(C)

Construction requirements and standards.

(1)

To eliminate future street openings, all underground work shall be completed prior to paving of new streets. Where paving exists, water mains shall be installed through bore-n-jack methods.

(D)

Incorporation by reference. Chapter 52 of the Code of Ordinances of the City of Delray Beach, as may be amended from time to time, is incorporated herein. [Amd. Ord. 28-01 5/15/01]