You'll need Denver concrete professionals who account for freeze–thaw, UV, and hail. We specify 4500–5000 psi, air‑entrained mixes (w/c ≤0.45), #4 rebar at 18 inches o.c., Class 6 bases compacted to 95% Proctor, https://murrayzttp405293.liberty-blog.com/38653743/local-denver-concrete-experts