The exact value would have been 6 Г— 9.2 = 55.2 gallons. Sherman now knows that he has about 54 gallons of water in his hose lay. Sherman has used 54 gallons of water to charge the hose lay. Typical rough estimations involve only one multiplication or division step, and usually this math can be done in your head. This may or may not need to be done on paper. Use the rounded value of 9 gallons per 100-foot length of 1-1/2-inch hose. The exact tables indicate that a single 100-foot length of 1-1/2-inch hose holds 9.2 gallons of water ( Table 3.1). Step 1.В Find the appropriate conversion/estimation in Table 3.1. He needs to estimate the volume of water in this trunk line. His crew has a trunk line of 6 lengths of 100-foot, 1 & 1/2 inch hose. These rounded values are easier to remember.Д®xample 2В - Sherman is out on a fire.

In the field, the conversion value can be rounded to 9 gallons when doing rough estimations/calculations. For example, from Table 3.1В we see that 100 feet of 1-1/2 inch hose holds 9.2 gallons of fluid. Sometimes estimations or approximations are useful, such as for problem-solving in the field, especially when without a calculator. The capacity of a 100-foot length of 1-inch diameter hose is 4 gallons. Step 5.В Set up the cancellation table so all units will cancel, except the desired unit, in this case gallons. Convert the 100-foot hose length to inches. Step 3.В Convert all measurements to the same units. Step 1.В Use the equation for determining the volume of a cylinder. How many gallons of water are in that length of hose? The volume of a hose can be computed using the equation for volume of a cylinder in Section 3.1.Д®xample 1В - A 100-foot length of 1-inch diameter hose is charged with water. The hose diameter is usually given in inches, with length in feet.

The volume of a hose allows an estimate of how much water can be delivered to the fire and is important in firefighting.

72 in 1 foot