When determining the size of a water tender/tanker, a department should consider which factor?

• A. Availability of radios
• B. Number of firefighters
• C. Bridge weight restrictions
• D. Typical weather

Answer: (C)

Sizing a water tender is driven by weight on the road and whether the routes it will use can handle that load. Water adds significant weight, so the full load must stay within the posted bridge and roadway weight limits along the anticipated travel paths. In practice, you calculate the gross vehicle weight by adding the truck’s empty weight, the tank’s weight, and the water payload, then verify that this total won’t exceed any bridge or road limits on the routes you expect to use. If a bridge along the route cannot support the full load, you either reduce the water carried, use a lighter apparatus, or plan alternate routes. Radios, the number of firefighters, and typical weather do not determine the necessary tank size in the same way weight restrictions do; they influence other aspects of operations but not the fundamental physical constraint of crossing bridges safely with the loaded vehicle.