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•034.1^1997 UNIFORM FIRE CODE Verticil clearances or widths shall be increased when, in the opinion of the chief, vertical clearances or widths are not adequate to provide fire apparatus access. 902222 SurCicc. Fire apparatus access roads shall be designed and maintained to support ^e imposed loads of fire apparatus and shall be provided With a surface so as to provide all-weather driv ing capabilities. 902^ l\iiniDg radius. The turning radius of a fire apparatus access road shall ^ as approved. 90222A Dead ends. Dead-end fire apparatus access roads in excess of 150 feel (45 720 mm) in length shall be provided with approved provisions for the turning around of fire apparatus. 902222 Bridges. When a bridge is required to be used as part of a fire apparatus access road, it shall be constructed and maintained in accordance with nationally recognized standards. &e Anicle 90, Sundard a.1.1. The bridge shall be designed for a live load sufficient to carry the imposed loads of fire apparatus. Vehicle load limits shall be posted at both entrances to bridges when required by the chief. 902J J.d Grade. The gradient for a fire apparatus access road shall not exceed the maximum approved. 902Marking. See Section 901.4. 902.2.4 Obstniction and control of fire apparatus access. 902J.4.1 General. The required width of a fire apparatus access road shall not be obstructed in any manner, including parking of vehicles. Minimum required widths and clearances established under Section 902.2.2.1 shall be maintained at all times. Entrances to roads, trails or other accessways which have been closed wi;h gates and barriers in accordance with Section 902.2.4.2 shall not be obstructed by parked vehicles. 902J.4 J Oosure of accessways. The chief is authorized to re quire the installation and maintenance of gates or other approved barri^des across roads, trails or other accessways, not including public streets, alleys or highways. When required, gates and barricades shall be secured in an approved manner. Roads, trails and other accessways which have been closed and obstructed in the manner prescribed by Section 902.2.4.2 shall not be trespassed upon or used unless authorized by the owner and the chief. E.\CCPT10.N: Public oCTjcers Kting wtihio their scope of duly. Locks, gates, doors, barricades, chains, enclosures, signs, Ugs or seals which have been installed by the fire department or by its order or under its control shall not be removed, unlocked, destroyed, umpered with or otherwise molested in any manner. EXCEPTION: When luthorized by the chief or perfomed by public oCGcers acting wiihio their scope of duty. 902J Access to BuOding Openings. 902J.l Required access. Exterior doors and openings required by this code or the Building Code shall be maintained readily accessible for emergency access by the fire department. An approved access walkway leading from fire apparatus ac^ss roads to exterior openings required by this code or the Building Code shall be provided when required by the chief. M2JJ Maintenance of exterior doors and openings. Exte rior doors or their function shall not be eliminated without prior approval by the chief. Exterior doon which have been rendered nooAuictional and which retain a frinctiooal door exterior 1-« ypearance shall have a sign affixed to the exterior side of such door staling THIS DOOR BLOCKED. The sign shall consist of letters hsving principal stroke of not less than V4 inch (19.1 mm) wide and at least 6 inches (152.4 mm) high on a contrasting background. Required fire department access doors shall not be obstructed or eliminated. See Section 1207 for exit and exit-access doors. For access doors for high-piled combustible storaxe see Section 8102.6.2. 902JJ Shaflway marklog. Exterior windows in buildings used for manufacturing or for storage purposes which open directly on shaftways or other vertical means of communication between two or more floors shall be plainly marked with the word SHAFTWAY in red letters at least 6 inches (152.4 mm) high on a white background. Warning signs shall be easily discernible from the outside of the building. Door and window openings on such shaftways from the interior of the building shall be similarly marked with the word SHAFTWAY in a manner which is easily visile to anyone approaching the shaftway from the interior of the buildmg, unless the construction of the partition surrounding the shaftway is of such distinctive nature as to make its purpose evident at a glance. 902.4 Key Boxes, ^^'hcn access to or within a structure or an area IS unduly difficult because of secured openings or where immediate access is necessary for life-saving or firefighting purposes, the chief is authorized to require a key box to be Installed in an accessible location. The key box shall be of an ap proved type and shall contain keys to gain necessary access as required by the chief. ~ WATER SUPPUES AND FIRE HYDRANTS 903.1 General. Water supplies and fire hydrants shall be in accordance with Sections 901 and 903. 903.2 Required Water Supply for Fir* ProtecUon. An ap- prov ed water supply capable of supplying the required fire flow for fire protection shall be provided to all premises upon which fa cilities, buildings or portions of buildings are hereafter con- siru^ed or moved into or within the jurisdiction. When any ponion of the facility or building protected is in excess of 150 feet (45 720 mm) from a water supply on a public street, as measured by an approved route around the exterior of the facility or building, on-siic fire hydrants and mains capable of supplying the required fire flow shall be provided w hen required by the chief. See Sec tion 903.4. 903J Type of Water Supply. Water supply is allowed to constet or reservoirs, pressure tanks, elevated tanl^ water mains or other fixed systems capable of providing the required fire flow. In set ting the requirements for fire flow, the chief may be guided b ^ Appendix Ill-A. 903.4 Fire Hydrant Systems. 903.4.1 General 903.4.1.1 AppUcabiUty. Fire hydrant systems and fire hydrants shall be in accordance with Section 903.4. M3.4.1J Testing and maintenance. Fire hydrant systems shall M subject to such periodic tests as required by the chief. Fire hydrant systems shall be maintained in an operative condition at aU limes and shall be repaired where defective. Additions, reoairs. * *^dar^ *«fv>cing shall be in accordance with approved