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Additional requirements of address size shall be as follows:
1. The height in inches of any number or letter therein shall be the sum of 1/10 of the distance in feet of the number from the boundary of the property (upon which the building, structure, or parking lot is situated) abutting the street, plus 2, providing that every number shall not be less than 4 inches in height.
2. The overall width of any figure in or comprising the number or letter shall be 1/2 of its height. The width of any portion of a figure in or comprising the number or letter shall be 1/10 of its height.
Design (including shape and style) as well as location of the street address numbers shall be such that they are legible and easily readable. Irrespective of whether the street address number was established before or after June 1, 1973, the Chief shall have the authority to prescribe a street address number larger in size than the dimensions stated in Section 57.505.1.1 when it is determined that due to lighting conditions, building location, shadows, background, or other reasons, street address numbers of minimum dimensions will not be easily readable from the street or approach to the entrance. A street address number of unusual design or placement may not be employed without prior written approval of the Chief.
Fire-flow requirements for buildings or portions of buildings and facilities shall be determined by an approved method as set forth in Sections 57.507.3.1 through 57.507.3.3.
Fire-flows shall comply with Table 57.507.3.1 for any structures, group of structures or facilities by the type of land development, or as otherwise determined by the Chief.
1. Where street alignments mandate the installation of dead-end mains, the fire-flow in gallons per minute may be adjusted downward, depending on the type of land development.
2. A minimum residual water pressure of 20 pounds per square inch is to remain in the system with the required gallons per minute flowing.
Type of Land Development | Fire-Flow in Gallons Per Minute |
Low Density Residential | 2,000 G.P.M. from three adjacent fire hydrants flowing simultaneously |
High Density Residential and Neighborhood Commercial | 4,000 G.P.M. from four adjacent fire hydrants flowing simultaneously |
Industrial and Commercial | 6,000 to 9,000 G.P.M. from four to six fire hydrants flowing simultaneously |
High Density Industrial and Commercial (Principal Business Districts or Centers) | 12,000 G.P.M. available to any block (where local conditions indicate that consideration must be given to simultaneous fires, and additional 2,000 to 8,000 G.P.M. will be required). |
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