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Arrow XT™, Enforcer™, Impel® or Velocity®
Detroit Diesel DD13, Cummins ISX 12 or ISL
Quint, Texas Chute Out (Side Stacked Hosebed), No Pump/No Tank
Single set of outriggers & one downrigger
18’ / 13’ short-jacked
115’ to 200’ max (depending upon body style)
1,000' of 5" or split load 700' of 5" & 600' of 3" hose
Issued and pending
Pierce Ascendant™ 107’ Heavy-Duty Steel Ladder – New Body Configurations
107 feet, 500 gallons, 750 lb tip load, on a single rear axle; is available on the Enforcer™, Arrow XT™, Impel® and Velocity® custom chassis on the Quint, Texas Chute Out/Side Stacked Hosebed, PUC® pump, and No Pump/No Tank body configurations.
Arrow XT™ Ascendant™ 107' Ladder, No Pump No Tank
∙ True tuck company configuration
∙ Up to 200’ of ground ladders in the rear
∙ Large ¾ transverse compartment in place of the pump
Enforcer™ 107’ Ascendant™ Ladder with PUC™ pump
∙ Available on both the Quint and Texas Chute Out body styles
∙ Standard 115’ or up to 200’ of ground ladder storage
Yes, an apparatus with the Ascendant 107’ ladder can be set up on varying grades with the vehicle in either the uphill or downhill position. The product is designed to be operated on a 12% uphill slope and a 9% downhill slope while meeting all NFPA stability requirements.
Comparative braking studies demonstrate the 56,000 pound Ascendant stops 50 feet shorter than a 72,000 pound 105’ tandem axle aerial.
So you may ask, how can a truck with two axles (one front axle and one rear axle) stop in a shorter distance than a truck with three axles (one front axle and two rear axles) which has more brakes?
During heavy braking, weight is transferred from the rear axle to the front axle. We can feel this effect on our bodies as we are thrown against the seat belts. Because a deceleration force acts at the center of gravity of a vehicle, and because the center of gravity of the truck is located somewhere above the ground (the center of gravity on an aerial is even higher) weight will transfer from the rear axle to the front axle in direct proportion to the rate of deceleration. In so many words, this is the effect of weight transfer under braking which can be as high as 70% or more and is why most vehicles have larger front brakes.
When it comes to aerials, the center of gravity is much higher and the weight is much greater than an automobile, consequently the impact is also greater.
In the case of a 56,000 pound Ascendant, over 39,000 pounds (70% of 56,000 pounds) of force can be on the front brakes. Compare that to a much heavier tandem axle aerial weighing 72,000 pounds which could apply 50,000 pounds to the front brakes. Consequently, the heavier vehicle will take longer to stop and exhibit higher brake and tire wear, increasing its cost to the owner over time.
Furthermore, all rear tires, brakes, axle, and springs on the Ascendant are rated for 33,500 pounds continuous duty (not intermittent use like the 35,000 pound rear axle).
Additional non-value added weight is not a friend to brake performance.
The Ascendant provides firefighters with 107’ of vertical reach and 100’ of horizontal reach without compromising on water capacity, performance, or safety. The Ascendant is rated at a 750 pound (dry)/ 500 pound (wet) tip load capacity with an additional 100 pound equipment allowance. It can flow up to 1500 gpm and is capable of a store front blitz feature as standard.
The Ascendant ladder was launched at FDIC 2015 and has received high praise from the industry. The 107’ Ascendant is the most popular new aerial product offering in the history of Pierce with over 100 being sold and over two dozen in service in just a year and a half.
We knew that “seeing is believing” with a revolutionary product such as the Ascendant which is why we’ve had 12 field units touring the country since launch. These Ascendant field units have logged over 180 hours of aerial operation.
The Ascendant is purpose built using proven engineering practices. The Ascendant ladder is not a new ladder structural design as lattice design aerials have been around for well over 100 years; it is simply an optimized design structure.
The design, strength, and durability of the Ascendant ladder have been rigorously tested. The aerial passed all NFPA structural and stability testing requirements prior to its launch and since that time, Pierce’s Research and Development team successfully completed a fatigue test, lifting a 750 pound tip load weight plus 100 pounds of equipment load, a total of 130,000 cycles at full extension. To put 130,000 cycles into perspective, that’s simulating approximately 17 cycles at rated tip load per day, every day, for 20 years.
Yes, the Ascendant is a heavy-duty steel ladder at a 750 pound (dry) tip load, 1500 gpm water flow, 2:1 safety factor and 1.5:1 stability. The Ascendant has been purpose built using proven engineering practices. The Ascendant design has been optimized to place material where needed and eliminating material where it is not necessary. Using a third party, Pierce certifies every aerial to the stringent UL Type I requirements and every single vehicle to NFPA compliance requirements.
In comparison, using the “when in doubt, make it stout” philosophy can add up to 20,000 pounds of unnecessary weight, adds non-value costs, drives up cost of ownership (tires, brakes, wear on major driveline components), increases stopping distances, and adds to initial acquisition costs.
The 107’ Ascendant is available on the Enforcer, Arrow XT, and Velocity custom chassis with either a big-block or medium-block engine as well as the Impel custom chassis with a medium block engine providing fire fighters flexibility and a wide range of chassis options to meet their department’s needs.
In total, with water and foam, the 107’ Ascendant on a 33,500 pound single rear axle can accommodate an impressive 500 gallons with 2,500 pounds of equipment, full hose compliment, and a big block engine (if desired). The 500 gallons can be configured on any of the custom chassis offerings for the Ascendant ladder (Enforcer, Arrow XT, Velocity or Impel).
The 107’ Ascendant heavy duty ladder is available on a wide range of body styles providing fire fighters flexibility and a wide range of options to meet each department’s needs.
The Ascendant is available with a quint style body, a Texas Chute Out style body for departments desiring a side stacked hose bed, and a true truck company body style with no pump or tank. Compartment space varies, ranging from 144 cubic feet to 306 cubic feet depending upon the body style selected. This compares to a typical tandem axle quint at approximately 165 cubic feet.
Pierce calculates compartment space by measuring the volume of the body compartments and excludes air bottle compartments, ladder storage chutes, and hose bed space in these calculations. Additionally, the Ascendant is available with our exclusive Pierce PUC pump for departments that desire increased compartment space, maneuverability and serviceability.
The Ascendant meets and in most areas exceeds NFPA 1901 requirements for a quint with up to a 2,000 gpm pump, a 500 gallon water tank, capacity for 1000’ of 5” hose, a 107’ heavy duty ladder device, and up to 200’ of ground ladders.
• 107’ vertical reach
• 100’ horizontal reach
• 750 lb tip load dry
• 500 lb tip load wet
• 1500 gpm flow
• 35 mph wind operation / ¼” ice
• Store front blitz (30° vertical nozzle angle)
• Below grade operation (-10°)
• 100 lb of additional equipment allowance at tip (no deduction for rung lighting)
• Heavy-duty high-strength steel