Sunday, September 7, 2008
Smart Specs
When departments prepare to move a substantial number of firefighters or victims up and down an aerial quickly, they often specify extra-heavy-duty aerial ladders. These specialized aerials have NFPA-rated tip loads of 750 pounds or more at low angles to support a lot of personnel and equipment in a variety of situations.
One common situation might be where the ladder cannot be placed directly against a wall or roof parapet for support, such as might be encountered when it is extended parallel to the walls between two buildings. Under these conditions, the aerial structure bears the whole load and requires extra-heavy construction. Another situation might be low-angle rescues where the combination of firefighters and victims could overload lower-rated aerials.
Anne Arundel County, Md., took delivery of an E-ONE CR100 100-foot aerial ladder quint that gives them excellent firefighting and rescue capabilities. It has a 1,025-pound tip load rating to support 750 pounds of personnel and 275 pounds of equipment in a horizontal position. A 1,250-gpm pump and 1,000-gpm pre-plumbed monitor deliver water for elevated master streams. The hosebed has room for 1,000 feet of 5-inch supply hose, and the unit carries 119 feet of ground ladders in an enclosed compartment that runs down the center of the body.
American LaFrance delivered an XD 110-foot aerial ladder to Bloomfield, N.J. It is designed as a straight truck, without a pump or tank, and has plenty of compartments with a modular tool-mounting system to keep all the tools and equipment in place. An EMS compartment in the cab allows the apparatus to handle medical calls and keep sensitive drugs and instruments in a secure, climate-controlled environment.
Frankfort (Ky.) Fire and EMS specified a Sutphen SL75 75-foot aerial ladder on a short wheelbase custom chassis. It has an impressive 1,000-pound rated tip load with an equally impressive 3.0 structural safety factor, which far exceeds the 2.0 safety factor required by NFPA. The apparatus has a 1,500-gpm pump and 500-gallon water tank for firefighting. The four-section mid-mount aerial design produces a low overall vehicle height and a short overall length.
Miami Dade (Fla.) Fire Rescue has a new Pierce HD 105-foot aerial ladder with a 750-pound tip load. The unit is equipped with a 1,500-gpm pump and a 500-gallon water tank to give it all the firefighting power of an engine company. The Velocity chassis is equipped with a Pierce Tak-4 independent front suspension for excellent ride and handling.
Anne Arundel
E-ONE CR100 100-foot aerial ladder quint
NFPA tip load of 750 pounds personnel plus 275 pounds equipment
E-ONE Cyclone chassis
Cummins ISM engine
1,250-gpm Hale midship pump
480-gallon water tank
15-kw Cummins Onan generator
Bloomfield
American LaFrance XD 110-foot aerial ladder
NFPA tip load of 750 pounds personnel
American LaFrance Eagle chassis
Detroit Diesel Series 60 engine
Pac Trac tool mounting system
EMS compartment in the cab
8-kw Harrison generator
Miami Dade
Pierce HD 105-foot aerial ladder
NFPA tip load of 750 pounds personnel
Pierce Velocity chassis
Detroit Diesel Series 60 engine
1,500-gpm Hale midship pump
500-gallon water tank
10-kw Harrison generator
Frankfort
Sutphen SL75 75-foot aerial ladder
NFPA tip load of 1,000 pounds personnel
Sutphen Custom chassis
Cummins ISM engine
1,500-gpm Hale midship pump
500-gallon water tank
8-kw Smart Power generator
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