Lesson Tag: Unit 7

Estimating

Proper planning prior to starting a concrete job will help prevent wasted materials and effort. There are several ways you can estimate the cubic yards of concrete needed for a job, the number of rolls of welded wire fabric, the lineal feet of form lumber, and the number of form stakes needed for a job. …

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Trowel Machine Operations

Marvin Whiteman Sr., invented the first power trowel in 1939. Since that time power floats and trowels have been widely used to finish large areas of concrete flatwork. There are many advantages to power troweling. While a cement mason using hand tools can finish approximately 300 to 600 square feet a day, a power trowel …

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