Can you use #4 stone in exterior conc. slab on grade. I have one supplier who says it is No problem and another who says you cannot use #4 stone outside. He says #4 has more deterious material, because it is not crushed as much.
He says ACI does Not reccommend it outside, but could not quote the section at the time. Has anyone dealt with this problem before.
He says ACI does Not reccommend it outside, but could not quote the section at the time. Has anyone dealt with this problem before.