1. Strength and Stability Questions

2. 1. What are loads on a building – give examples?
2. Which 4 loads should a building be designed to resist?
3. Describe how loads are transmitted through a building – use a diagram to show this.
4. Describe what is meant by the term impact load.
5. Name and describe the test used to check the ratio of water to cement of concrete.

3. 6. What does a compressive strength test do on concrete?
7. Describe what is meant by the term Dynamic load.
8. Describe what is meant by the term dead load.
9. What is strength or stress grading of timber?
10. Describe how the water resistance of mortar is tested.
11. What does BSI mean and why are this and European standards (EN) important?

4. 12. What does the code C25 mean following a strength test on concrete
12. What does the code C25 mean following a strength test on concrete? What is the BSI number?
13. What does the code D30 and C14 mean following a strength test on Timber?
14. What is the minimum strength of a brick? How are they classified? What is the BSI number?
15. How is aggregate classified?
16. Where would you find the strength classification of a piece of timber?
17. A timber framed house requires C30 timber for the frame and D30 timber for the floors what sort of timber would you need to buy?

5. 18. What is the function of the outer leaf / Skin of a cavity wall?
19. What is the function of the inner leaf / Skin of a cavity wall?
20. What is the cavity below ground filled with and why?
21. Explain how wall ties are positioned and the reason they are used in a cavity wall. Use diagrams to illustrate your answer.

6. 22. The leaves / skins of a cavity wall should be how thick?
23. How far apart should each skin of a cavity wall be?
24. What is the purpose of lateral and vertical bracing in buildings?
25. Describe how bracing is used to secure a wall plate and roof truss in position.
27. Without ties and restraints describe what would happen to a wall?