The weight of a steel construction beam with an industry designation of W12 x 22 is 19 pounds per foot. To determine the weight of a 4.0-meter-long beam, we first need to convert the length from meters to feet.
1 meter is approximately 3.28084 feet. Therefore, a 4.0-meter-long beam is:
4.0 meters * 3.28084 feet/meter = 13.12336 feet
Now, we can calculate the weight of the beam:
Weight = Length (in feet) * Weight per foot
Weight = 13.12336 feet * 19 pounds/foot = 249.34384 pounds
So, a 4.0-meter-long W12 x 22 steel beam weighs approximately 249.34 pounds.