Concrete composition, reinforcement, pre-/post-tensioning and factor of safety

What this note covers

1. Concrete is a composite whose constituents have different jobs
2. Reinforcement works through compatibility and load transfer
3. Pre-tensioning introduces compression before service loading
4. Post-tensioning changes the sequence and anchorage
5. Laminates arrange material direction as part of the design
6. A yield-based factor of safety is one defined check
7. Worked prestress service check: compression before tension
8. Worked factor-of-safety chain: load, area and yield criterion

8 sections · 10 key terms & formulas · 6 common mistakes