platapus77
New member
I just poured my slab for my 26'x38' shop (pics to follow when I've made more progress) and everything looks good but have a question about the product description on the load ticket. I asked the concrete contractor for 4000 psi mix with the largest aggregate and stiffest slump that can be pumped. The concrete ticket specified as follows "6.5 C+S20% 1"/PG WR 3". I assume the 6.5 is sack equivalent to psi and the 1" is the rock size. Can anybody decipher the rest for me? Thanks!