Clear Width <br />The basic clear width requirement for apparatus <br />access in the lFC and NFPA 1 is 20 feet. NFPA 1141 <br />calls for one-way fire lanes that are 16 feet wide; <br />however, this applies to roads that do not abut <br />buildings. A clear width of 20 feet will allow most <br />aerial apparatus to extend the outriggers necessary <br />to support the aerial ladder or elevating platform <br />while in operation (Figures 1.2 and 2.1). However, <br />some recently manufactured aerial apparatus <br />require 24 feet of clear width for outrigger extension. <br />i - <br />f <br />I L <br />I~ allp i <br />T kllrn <br />at'iri-stin lnrn~il, <br />cx 1 d ie s,nrr„O <br />a: ~~e1 lilo <br />{ 9 I~e.7ut:UDC <br />f <br />F fr <"Ws1O'1=01 <br />Y-tl~n r fr.'~r' _4 <br />. <br />+-29, 11 gaw~r~c. <br />(Fig. 2.4) Fire apparatus "Y-" and "T turnarounds. <br />Reprinted with permission from NFPA 2003 Uniform Fire <br />Code Handbook, © 2003, National Fire Protection <br />Association, Quincy, MA. <br />Lanes wide enough for apparatus to pass one <br />another will facilitate developing and expanding <br />operations. NFPA 1141 contains a 24-foot clear <br />width requirement for two-way fire lanes. Appen- <br />dix D of the IBC calls for a 26-foot clear width at fire <br />hydrant locations, extending for a distance of 20 <br />feet in both directions, as well as a 26-foot width in <br />the vicinity of buildings that are 30 feet or more in <br />height (for aerial operations). NFPA 1141 also con- <br />tains guidance on access in parking lots. <br />Rolled or rounded curbs adjacent to properly <br />designed sidewalks can effectively increase access <br />width. These allow apparatus to easily negotiate <br />curbs. <br />Height <br />The basic requirement for clear height of fire lanes <br />in the IFC, NFPA 1 and NFPA 1141 is 13 feet 6 inch- <br />es. Some modern aerial apparatus may require 14 <br />feet of clearance. Potential for accumulation <br />of snow and ice should be factored into height <br />requirements. The NFPA 1 handbook recommends <br />at least 14 feet in colder climates. Newer aerial <br />apparatus may also require additional height. <br />Finally, avoid overhead wires or other obstructions <br />when determining fire lane locations. <br />r <br />i <br />~uG-tt~P-~sv <br />(Fig. 2.5) Fire apparatus cul-de-sac turnaround. <br />Reprinted with permission from NFPA 2003 Uniform Fire <br />Code Handbook, © 2003, National Fire Protection <br />Association, Quincy, MA. <br />• <br />I <br />I <br />l <br />II <br />I <br />FI'RiE S;E'RVICE FEA'T,U;RES Ol!'BU'ILDI'NGS AND FIRE PROTIECTION SYSTEMS 13 <br />129 <br />