Five tiers. One standard. Specifications referenced from ACI 332, ACI 360R, PCA, and IRC Chapter 4. This is what's actually under your concrete — tier by tier.
All slabs crack. The question isn’t if — it’s when.
Scroll across (or down on mobile) to see how each tier is engineered. The two we build are highlighted.
Both engineered · Choose by use & budget
Four commitments that apply on every job — whether you choose our Better or Best tier.
Engineered to spec, never bare dirt.
4,000+ PSI · freeze-thaw rated.
Saw-cut or tooled, per PCA spacing.
2×#4 bars at every inside corner.
We send you the engineered build-up, line by line, before you ever put down a deposit.
Every inside corner of a slab is a built-in crack waiting to happen. Shrinkage stress concentrates at the corner; the crack propagates outward at 45°.
We place two #4 rebars at 45° across every re-entrant corner, per ACI 360R Figure A7.3.3. Two bars. $8 in steel. The crack never opens.
If concrete is subjected to stress at a re-entrant corner, it will inevitably lead to a crack at approximately 45° from the corner.
— Drew Dudley, P.E. · ACI 360R Figure A7.3.3
ACI 332 (Residential Concrete) · ACI 360R (Slabs-on-Ground) · PCA Guidelines · IRC Chapter 4. Every Lee Design quote includes the engineered build-up in writing — before you put down a dollar.
Free 15-minute on-site visit. Written quote with full spec (base, slab, reinforcement, mix, joints) in 24 hours.
