Inspection

Question 1

What is a latent defect and an inherited defect?

Question 2

How do you inspect a portfolio and why?

Question 3

Hierarchy of risk control

Answer 3

1. Elimination
2. Substitution
3. Engineering Controls
4. Administrative Controls
5. PPE

Question 4

What are the 4 things to consider for an inspection ?

Answer 4

1. Consider your personal safety
2. Inspection of the local area
3. External Inspection
4. Internal Inspection

Question 5

What are the 4 types of foundations?

Answer 5

1. Trench or strip footings - generally used for residential dwellings, for walls and closely spaced columns
2. Raft - slab foundation over the whole site
3. Piled - long and slender reinforced concrete cylinders (piles) in the ground
4. Pad - slab foundation system under individual or groups of columns

Question 6

Types of damp?

Answer 6

• Penetrating damp
• Rising damp - goes up to 1.5m
• Condensation
• Dry/Wet Rot

Question 7

Common causes of defect?

Answer 7

1. Movement
   * Subsidence
   * Cavity Wall tie failure
   * Settlement issues
   * Thermal expansion
   * Shrinkage caused in drying out process
2. Water/ damp
   * Penetrating damp
   * Rising damp - goes up to 1.5m
   * Condensation
   * Dry/Wet Rot
3. Defective/ deterioration of building materials

Question 8

What is deleterious materials and the types?

Answer 8

Materials that can degrade over time causing structural issues. Example are:
* RAAC (Reinforced autoclaved aerated concrete)
* Calcium Chloride
* Woodwool Shuttering
* High alumina cement

Question 9

Hazardous Materials?

Answer 9

Materials that can harm health. Examples
* Asbestos
* Radon Gas
* Lead piping/paint

Question 10

Types of invasive plants?

Answer 10

a) Japanese Knotweed

b) Giant hogweed

c) Himalayan balsam

d) Rhododendron ponticum

e) New Zealand pygmyweed