I was told I did not needed additional barriers.
For the welding/grinding areas, yes, It was suggested. I do plan to do that in the areas where the grinding and welding will be done. I can get aluminum diamond plate panels for around 100.00 each. Or stainless steel brushed panels for a bit more. I will install the floor tiles first before installing them.
I got 20 2-gang boxes. Between single 220volts outlets and 4 110volts outlets. I need to check if that is enough.
For the 110 outlets, I initially thought about a circuit per wall, but it was suggested, on each wall, to have them on different circuits. Pretty good idea.
??? Can you elaborate?