STRUCTURAL COORDINATION & SLAB DESIGN GUIDE
Coordinate anchoring, slab thickness, post-tensioning and footing requirements before concrete is poured to reduce rework, delays and change orders.
Three Structural Coordination Risks to Resolve Early
Slab Thickness
7″ minimum. No exceptions for double-stack systems.
M12 × 160mm anchors need 5″ embedment. A 7″ slab preserves 2″ below the anchor and reduces punch-through risk.
Do not value-engineer slab thickness. Punch-through risk is non-negotiable.
Post-Tension Coordination
Coordinate PT cable locations before installation.
Map PT tendons before anchoring. Coordinate anchor zones early to avoid cable damage, repairs, and delays.
Provide anchor layouts before PT installation. Early coordination avoids field conflicts.
Footing Rebar Density
For triple and quad systems, coordinate reinforcement before final design.
Dense rebar can block anchor access and slow installation. Coordinate reinforcement before final footing design.
Coordinate rebar placement early. Preserve anchor access without compromising structure.
The Cost of Getting It Wrong
Small coordination misses before concrete placement can become major schedule delays, added labor, and structural rework.
Typical schedule delay from slab remediation or post-tension cable repair.
Installation time when footing reinforcement is too dense around anchor locations.
Typical change-order exposure for structural rework across parking levels.
Resolve coordination issues before the pour, not after.
Early Coordination Checklist
Confirm slab thickness ≥ 7″
In all stacker zones before pouring. No exceptions for double-high units.
Map all PT cable paths
Provide anchor layouts to the structural engineer before cable placement.
Coordinate footing rebar density
For triples and quads with the stacker vendor before the footing design is finalized.
Concrete grade C30 minimum
Or as specified by the structural engineer. Verify compressive strength meets anchor pull-out requirements.
Anchor bolt spec: M12 × 160mm
Drill depth ≥ 4″. Verify there are no rebar conflicts at each anchor point.
Weight distribution plan: 4,212.5 lbs per baseplate
Confirm the slab can handle point loads at all stacker locations.
Free Structural Review
Submit your slab plans for a free structural review. We'll identify coordination risks before they become change orders.
Our engineering team reviews your structural drawings against stacker requirements and returns annotated red-lines, typically within three business days.
Before Concrete Is Poured
Catch coordination issues while they are still easy to fix.
No charge. No obligation. Just a technical review before field conflicts become change orders.
Turnaround
3 Business Days
Reviewed By
Licensed Engineers
Deliverable
Annotated PDF Red-Lines
Cost