What is FM Floor ? What Is Levelness(E) and Flatness(F)Of floor ? DM floor ? FM1 FM2 FM3 .

In this Video Discussed about Levelness and flatness of Floor .
1)what is FM Floor and Type of FM Floor?
2)what is FM2 FM1 floor ?
3)what is the reach Truck and side Shift ? #Concrete society #fm2 #laser #flooring #vdf