Hi Gary, et. al.

This was the shop floor in my Junior High School. I'm not sure of the 
underlayment, but the end grain was a common method circa 1964.

Mike Duchaj

Gary Curtis wrote:

>He took ordinary 2x4s. Cut the timber into 2-inch blocks. The blocks were
>laid down right over the concrete slab, with only  a 6 mil plastic moisture
>barrier. 
>
>The blocks are laid down as a parquet, end down, so the top view is a 3.5x2
>inch matrix of wood. The depth is also 2". There is no need for sleepers
>along the side, only some shimming to keep the assembly tightly knit. No
>pressure treated lumber, no glue, no waves, no buckling or sagging (that
>would be waves), no cold feet, no collapsing under the weight of heavy
>machinery.
>
>
>
>It just occurred to me that this would be ideal for a shop with a sloped
>subfloor. Just taper the cuts of 2x4 blocks.
>
>  
>

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