Page 64 - Calculating Agriculture Cover 20191124 STUDENT - A

5-2 Measurements CH 5]

Federal and State regulations and laws. Federal law controls maximum gross vehicle weights
and axle loads on the Interstate System. Federal limits are 80,000 pounds gross vehicle
weight for double axel, 20,000 pounds on a single axle, and 34,000 pounds on a tandem axle
group.
The trailer may hold 48,000 pounds, but if the road can only carry 32,000 pounds then
the excess weight develops ruts in the dirt, asphalt or concrete of the road. By law, the
trucker is required to lower the amount of his load to accommodate the load capacity of the
road being traveled or take a route on roads that can accommodate his load weight.
The total weight is also important for the stress on the metal of the truck and its engine.
Get behind a truck going up hill and their speed slows down, and when you are behind a
struggling truck you experience stress as they plod on to their destination, while impeding
your travel speed.
Measurement is interpreted to mean the action of measuring something; the something
can be measured by its value, size, length, or volume or amount as established by a
measuring system, and/or the units of measuring as established. The values expressed are
made meaningful by quantifying into specific units. Measurements act as labels which make
those values more useful in terms of details. For example, instead of saying that Steve
denominate Applegate is a cattle rancher we specify a measurement and specify that Applegate has 1,200
number : a number head of cattle on his ranch, or this could be expressed as 1,200 acres with 10,000 acres
(such as 7 in 7 feet) leased.
that specifies a The numbers used in defining the units of measurement are denominate numbers; that is
quantity in terms of given a name to, so their use is defined. The word denominate is derived from the Latin word
a unit of nomen, meaning "name." A denominate number is a type of concrete number with a unit of
measurement.. measure attached with it. For example, "5 inches" is a denominate number because it has the
unit inches after it. The following are more examples of denominate numbers because in each
case the measure of quantity is named: 12 hours 6 minutes, 45 degrees, 8 liters, 8 feet, 12 dozen,
25 grams, 48.6 grains, 6 square meters, 640 acres, 256 hectares, 3 yards, 3 meters, 5 inches or
12 centimeters.
Standard units of measure are expressed in either English or metric terms, both being
quantifiable language that illuminates the understanding associated with an item as its
measurement. For example, when expressed in English units as in the United States the
measurements could be in inches, feet, and yards or pounds, tons, bushels or acres. For
metric the terms could be centimeters, meters, and Kilometers, or kilograms, kilos, tonnes, or
hectares.
In the United States the customary units is the English system of measurement, whereas
the rest of the world now uses the metric system for measurement.
A unit of time is measured as the second being the base unit, which is defined using the
element cesium as an atomic clock for time that makes just over 9 billion oscillations per
second. 60 seconds to the minute, 60 minutes to the hour, 24 hours to the day, 7 days to
the week, and so on.
Comparing the English system and metric system for linear measurements, the English
1
system includes the inch (in) which is / 12 of a foot; foot (ft) which consists of 12 inches, the
yard (yd) which is 3 feet or 36 inches, and the mile (mi) which is 5280 feet, 1,760 yards, and
63,360 inches. The units of length on the metre (meter) scale is millimeter (mm) which is
1/1000th of a meter; the centimeter (cm), which is 1/100th of a meter: the kilometer (km)
which is 1000 meters.

U.S. Units of Measurement

Table 5.1 identifies the units of measure commonly used in the United States.
These standard units of measure are used as multipliers or divisors to change U.S.
measurements to smaller or larger units of measure. Follow these rules:

1. To express a U.S. measurement in a smaller unit of measure, multiply the measurement
by the number of units contained in one of the larger units.
2. To express a U.S. measurement in a larger unit of measure, divide the measurement by
the number of units needed to make one of the larger units.

Example A: Change 10 weeks to days.

Solution: 10wks x 7days/wk = 70 days

Copyrighted Material