how do you figure up lighting?

[jethrob]

Saw these in a local ad.

I'm thinking of returning the 8' Lowes fixtures in favor of either the wal-mart 4 footers or the rural king 4 footers

 

[Stevie-Ray]

I have a 30x48 and put up 25 4 FT. twin tube T8 $10.00 Wal Mart cheap lights. 5 rows of lights with 5 lights in each row. The 5 lights are spaced evenly along 30 feet. and the rows are spaced 8 ft. I couldn't be happier. It comes out to around 96 lumens per foot if I remember right.

I have far less lighting in a 24x48, but it is fine for me so far, and will be even better when the white walls go up. There are only 13 4' twin T8s in mine and the pic below shows the brightness when dark outside. I am going to add a circuit to mine for further flexibility. These are all on one 15A circuit. If I ever want direct lighting for detail work the extra circuit will come in handy.