Use H section steel to make the beam, the span of 8 meters, the floor slab, what's the minimum H steel? What's the model?
Choose H250X100X4X6, and if there is no snow in the south, the web can be used. 220 is the ultimate limit
Look, how many objects do you want to lift? If it's 5T, it should be OK. If it's 10T, you have to use 30H steel.
It is recommended to use 300*200*8*12HM H steel
