unintentional deployment of the hose
is. You can meet this requirement with
a cover or cargo netting. Some hosebed
cover choices are hinged treadplate
covers, roll-up hard covers (which are
like a roll-up door lying flat), the standard
vinyl cover, and a combination. I caution
firefighters not to remove and discard the
cover or netting, as the unintentional deployment of hose has resulted in several
When considering hose storage,
consider standpipe packs as well. Some
departments use shoulder packs in high
side compartments, and others install
racks with seat belt straps over the lower
side compartments as a convenient
Ground ladders need to be mounted
as to prevent damage. They should
be supported and not exposed to heat
greater than 212°F. Ladders sticking
in the pump compartment over hot exhaust components have had their heat
exposure labels activated! Some of the
methods of ladder storage are on a rack,
on the beam in an upright compartment behind the upper compartments
on a pumper, and “through-the-tank”
storage. Water tanks can be designed
with an enclosed ladder tunnel with an
access door at the rear of the apparatus.
Also, if you carry a combination ladder,
it can generally be installed upright in a
full height compartment. I usually specify a vertical divider with a hook-and-loop fastener strap to hold it in place.
The body chapter also has requirements for rope anchors and receivers for
portable winches. For winches, the capacity of the receiver must be 2 to 1 over
the straight line pull of the winch rating.
For rope, 9,000-pound straight line pull.
When specifying winch receivers, a
mating 12-volt power source will need to
be in close proximity.
Chapter 16, Fire Pump and
A rated fire pump must pump a minimum of 250 gpm 150 psi from draft.
As stated above, each type of apparatus
has different minimum capacity requirements. If the pump is rated at 3,000
gpm or less, it must meet the following
• 100 percent of capacity 150 psi.
• 70 percent 200 psi.
• 50 percent 250 psi.
• Over 3,000 gpm (formerly called industrial pumps), it must meet the following ratings:
—100 percent of capacity 100 psi.
— 70 percent 150 psi.
— 50 percent 200 psi.
Another requirement involves the
amount of time required to prime the
pump through 20 feet of suction hose.
The pump should achieve prime in 30
seconds or less for pumps under 1,500
gpm and 45 seconds for pumps rated
1,500 and over. Suction can be created
either by a standard electric primer or
the more current air primer.
Sufficient intakes to satisfy the rated
capacity of the pump must be provided.
A minimum of one gated suction inlet
must also be provided. Many purchasers locate a 2½- or three-inch gated
auxiliary suction intake on each side of
the apparatus for convenience. Other locations for auxiliary suctions are a front
suction or a rear suction inlet. These
large-diameter suction inlets require an
automatic relief valve ahead of the operating valve. The same is true of external
intake valves located on the pump’s
steamer connections. These valves are
not to protrude past the running board,
as they are easily damaged if they strike
a fixed object.
Electrically operated master intake
valves built into the pump’s intake have
become very popular. Specify that an air
bleeder valve be in close proximity to
the operating switch. On a long LDH lay,
there is a great deal of air trapped ahead
of the water, which should be expelled
prior to opening the valve into the pump.
Pump modules come in many con-
figurations. The widths of many pump
compartments have been considerably
reduced because of automated controls,
which take up less space on the pump
panel. Other configurations locate the
suction and discharge connections
under the rear of the cab, and the pump
controls are typically located in the first
compartment, reducing the wheelbase of
Discharges to flow the capacity of the
pump must be provided. For pumps of
750 gpm or more, a minimum of two 2½-
inch discharges must be provided. Under
750 gpm, a single 2½-inch discharge is
required. The rest of the pump capacity
can be any configuration the purchaser
specifies. The various size outlets are rated
at different capacities, which follow.
• 2½-inch 250 gpm
• 3-inch 375 gpm
• 4-inch 625 gpm
A permanent waterway piped to the
pump is rated at 1,000 gpm.