§ 13.04.515. Appendix C fire hydrant locations and distribution.  


Latest version.
  • A subsection, designated "Appendix C Fire Hydrant Locations and Distribution" is amended to read as follows:

    Appendix C Fire Hydrant Locations and Distribution
    Section C101
    General

    C101.1 Scope. Fire hydrants shall be provided in accordance with this appendix for the protection of buildings, or portions of buildings, as required by Section 507. Design shall comply with the Clark County Uniform Design and Construction Standards (UDACS) for public installations or NFPA 24 for private installations, as applicable.

    Section C102
    Location

    C102.1 Fire hydrant locations. Fire hydrants shall be provided along required fire apparatus access roads

    C102.2 Intersections. The spacing of fire hydrants shall start by placing fire hydrants at all intersections.

    C102.3 R-3 Occupancies and single-family dwellings built under the IRC. In all residential areas (R-3 occupancies and single-family dwellings built under the IRC only), hydrants shall be spaced not to exceed 500 feet, or 600 feet if all homes are protected by approved automatic fire sprinkler systems.

    C102.4 Distance from Hydrant to R-3 Occupancy and single-family dwelling built under the IRC. The maximum distance from a one- or two-family dwelling to a fire hydrant shall not exceed 300 feet, as measured from an approved point on a street or road frontage to a fire hydrant. An approved point is defined as the property line furthest from the hydrant, at a right angle to the street.

    C102.5 Commercial and Residential Occupancies other than R-3 and single-family dwelling built under the IRC. In all commercial and industrial areas, including multi-family R-1 and R-2 occupancies, hydrants shall be spaced not to exceed 300 feet, or 400 feet if all buildings are protected by approved automatic sprinkler systems.

    C102.6 Commercial and Residential Occupancies other than R-3 and single-family dwelling built under the IRC, Distance to Dead-End Street. The maximum distance from a hydrant to the end of a dead-end street shall not exceed 200 feet.

    C102.7 Distance to a Fire Department Connection (FDC). The maximum distance from a fire hydrant to a fire department connection (FDC) supplying fire sprinklers and/or standpipes shall not exceed 100 feet, as measured by an approved route. An approved route is defined as an unobstructed path of travel on which hose can easily be laid.

    C102.8 Spacing Along Major Streets. Where streets are provided with median dividers, or have four or more travel lanes and a traffic count of more than 30,000 vehicles per day, hydrants shall be spaced at a maximum of 1,000 feet along both sides of the street; arranged on an alternating basis at 500-foot intervals.

    C102.9 Hydrants Provided with New Water Mains. Where new water mains are extended along streets where hydrants are not needed for protection of structures or similar fire problems, fire hydrants shall be provided at spacing not to exceed 1,000 feet to provide water for transportation hazards

    C102.11 Hydrant Clearances from Structures. A 3-foot clear space shall be maintained around the circumference of fire hydrants.

    C102.12 Hydrant set-back from curbs. Fire hydrants shall be located 4 feet to 7 feet from the back of curb. Where it is not possible to locate the hydrant a minimum of 4 feet from the back of the curb, or where curbs are not provided, the hydrant shall be protected against vehicular impact in accordance with Section 312.

    C102.13 Hydrant Pad. A concrete pad, with minimum dimensions of 3 feet by 3 feet, with a minimum depth of 10 inches, reinforced with a minimum of one (1) No. 4 rebar, shall be provided at each fire hydrant.

    Section C103
    Approved Fire Hydrants

    C103.1 Scope. Hydrants that are proposed for installation in public water systems shall be in accordance with approved fire hydrants as allowed by the water purveyor. Hydrants proposed for installation on private water systems shall be in accordance with approved fire hydrants as allowed by Fire Prevention.

    Section C104
    Supply and Underground Mains

    C104.1 Supply points. Two sources of water supply are required whenever 4 or more fire hydrants and/or sprinkler lead-ins are installed on a single system.

    C104.2 Sectional Control Valves. Sectional control valves shall be installed so that no more than 2 fire hydrants and/or 2 sprinkler lead-ins can be out of service due to a break in a water main.

    C104.3 Minimum Size of Line. Supply lines feeding fire hydrants shall have a minimum diameter of 6 inches, with a dead-end maximum length of 150 feet of 6-inch underground pipe supplying only one hydrant.

    C104.4 Pressure Rating. Underground piping shall have a minimum working pressure of 150 psi. Underground piping connected to a fire pump or a Fire Department Connection (FDC) shall have a minimum working pressure of 200 psi.

    C104.5 Restraint. All underground water lines shall be restrained in accordance with applicable codes and standards.

    C104.6 Listings. All on-site underground water mains and materials shall be U.L. listed, A.W.W.A. compliant, and shall be rated for the appropriate working pressure.

    Section C105
    Satisfying Fire Flow Requirements
    (in Accordance with Appendix B)

    C105.1 Minimum number of hydrants. The minimum number of fire hydrants required to meet the fire flow shall be based on a maximum flow of 1,000 gallons per minute per hydrant. All hydrants utilized in providing the fire flow shall be within 750 feet of the structure being protected as measured along the street or approved fire apparatus access road.

    Exception: In unincorporated Clark County and the City of Las Vegas the maximum flow per hydrant shall be 1,500 gallons per minute.

    C105.2 Hydrants on adjacent properties. Fire hydrants on adjacent properties shall not be considered unless fire apparatus access roads extend between properties and recorded easements are established.

    Section C106
    Construction Operations

    C106.1 Construction Hydrants. Hydrants shall be provided for construction in accordance with Section 3312.

    C106.2 Placing hydrant out of service. If during construction it becomes necessary to close any control valve or place a hydrant out of service, approval shall be obtained from Fire Prevention prior to placing the hydrant out of service.

    Section C107
    Hydrant Markings

    C107.1 Hydrant Markings. Hydrants shall be painted safety yellow for public and safety red for private, shall have their location marked in the adjacent fire access lane by a blue reflective pavement marker and shall have red painted curbs 15 feet in each direction. Where curbs are not provided, paint shall be applied along the roadside for 15 feet in each direction. Hydrant markings shall be in accordance with Section 507.

    C107.2 Hydrant Marking Maintenance. Hydrant marking shall be maintained in accordance with Section 507.

(Ord. No. 3922, § 1, 12-21-2010; Ord. No. 4095, § 9, 4-2-2013; Ord. No. 4129, § 1, 9-17-2013; Ord. No. 4365, § 1, 5-2-2016)