Concrete PSI & Exposure Planning Guide
Organize strength, exposure, placement, and loading questions before discussing a concrete mixture with a producer or designer.
Editorial review: 2026-09-29 · How we review technical content
Key takeaways
- Create a decision checklist for selecting and communicating concrete requirements without inventing a universal PSI recommendation.
- It intentionally does not output “use 4,000 psi” as a universal answer. Adopted code, drawings, specifications, local practice, producer recommendations, and exposure requirements govern.
Concrete PSI & Exposure Planning Guide
Create a decision checklist for selecting and communicating concrete requirements without inventing a universal PSI recommendation.
What this calculator does
Create a decision checklist for selecting and communicating concrete requirements without inventing a universal PSI recommendation.
The tool emphasizes that compressive strength is only one mixture requirement and flags exposure, wear, and structural conditions that often add durability or performance requirements.
How to use the result
It intentionally does not output “use 4,000 psi” as a universal answer. Adopted code, drawings, specifications, local practice, producer recommendations, and exposure requirements govern.
How this calculator works
The planner uses application and exposure questions to identify issues that must be resolved before ordering; it deliberately avoids outputting a universal “correct PSI.”
Specified compressive strength can be only one mixture requirement. Freeze-thaw, deicers, permeability, abrasion, air, w/cm and structural design can govern simultaneously.
Input checklist
- Application: Enter the project-specific application.
- Freeze-thaw exposure: Enter the project-specific freeze-thaw exposure.
- Deicing salts: Enter the project-specific deicing salts.
- Abrasion/wear: Enter the project-specific abrasion/wear.
- Specified strength known?: Enter the project-specific specified strength known?.
Worked example
A driveway exposed to freezing and deicing salts needs durability considerations beyond simply ordering a higher compressive-strength number.
Field checklist
- Start with drawings/specifications when available.
- Tell the producer the actual application and exposure.
- Confirm air, w/cm, strength, slump/workability, and aggregate requirements as applicable.
References & further reading
- ACI SPEC-301-20 — Specifications for Concrete Construction — Reference specification used when incorporated into project specifications.
- NRMCA Concrete In Practice (CIP) — Industry education covering common concrete field problems and practices.