Top 20 accessed subjects
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1. Batching by volume - DIY
2. Consistence tolerance - slump test
3. Detailing symbols (previous & current)
4. Basic properties
5. Slump test
6. Bleeding and segregation
7. Floated and trowelled finishes
8. Screeds – general
9. Characteristic strength
10. Carbonation of concrete
11. Cold Joints
12. Time limit between placing fresh concrete layers
13. Masonry - Densities
14. Surface finish specification
15. Friction between elements
16. Pre-tensioned concrete
17. Honeycombing of concrete.
18. Water absorption limits on aggregates
19. Design working life
20. Importance of aggregate grading
