'I'll Just Pour a 4-Inch Slab' Is Not Engineering
A slab supporting screen enclosure columns, pergola posts, or a heavy outdoor kitchen needs to be engineered specifically for those loads. A generic 4-inch slab with standard rebar may be adequate — or it may not. A PE calculates which one applies to your project.
Thickened Edges Are Required When Posts Bear on the Slab
When a screen enclosure, pergola, or patio cover has columns or posts that sit on the slab's edge, that edge needs to be thickened into a footing. Without this, the slab edge can crack or fail under the concentrated post loads.
Florida's Sandy Soil Requires a Specific Approach
Sandy soil has lower bearing capacity than clay or rock. The slab must be designed for your soil's actual bearing capacity — not a textbook assumption. In some areas, additional compaction or soil treatment is required before pouring.
Control Joints Are Planned Cracks — All Concrete Cracks Eventually
Concrete cracks as it cures and expands and contracts with temperature changes. Control joints are engineered weak points that direct the cracking to specific, less visible locations — rather than random cracks across the surface. Their location and depth are specified in the engineering.
Florida's High Water Table Affects Everything Below the Slab
In many parts of Florida, the water table is just feet below grade. This affects what goes under the slab — the sub-base design, vapor barrier specification, and drainage approach. Skipping this analysis leads to moisture problems above the slab.
A Slab Without PE Drawings Creates Problems for the Structure Above
Every structure we engineer — screen enclosure, pergola, outdoor kitchen — requires the slab below to be designed for its specific loads. When the slab and the structure above are engineered together, everything works. When they're done separately without coordination, there are gaps.
⚠️ 'Monolithic Slab' Is Not a PE Specification
Many contractors say they'll pour a 'monolithic slab' without providing engineering drawings. A monolithic slab is a construction method — not an engineered specification. Thickness, rebar, and thickened edge dimensions must be calculated by a PE for your specific loads and soil conditions.
