- State four likely causes of the building collapse. [4 marks]
- Mention four ways of preventing the illustrated incidence. [4 marks]
- State four criteria for good housing. [4 marks]
- Mention four effects that the collapsed building would have on people living in the area. [4 marks]
- (i) Name two types of pollution that would result from the building collapse.
QUESTION 6
The diagram below illustrates a building that collapsed in a residential area. Study it and answer questions 6(a) to 6(e).
[2 marks]
(ii) Mention two types of pollution that are common in industrial areas.
[2 marks]
Observation
Majority of the candidates responded to this question and their performance was average.
Parts (a), (b) and (c) were well answered by the candidates. However, candidates did not understand parts (d) and (e) correctly.
The expected answers are:
- Likely causes of building collapse
- Use of substandard building materials
- Use of inadequate quantities of materials
- Poor architectural design
- Poor town planning /disobedience to town planning rules/laws
- Lack of supervision by qualified personnel
- Negligence to duties during building construction/poor building foundation
- Poor siting/land topography/soil structure
- Natural disasters/named
(b) Ways of preventing building collapse
- punishment/sanction for builders who circumvent building/town planning rules
- use of quality/standard materials for building
- use of adequate materials/build according to specifications/standard
- public enlightenment/education on the hazardous effect of substandard housing/building collapse
- building on approved site
- use qualified building professionals/named
- building foundation should be solid
(c) Criteria for good housing
- It must be well ventilated
- It must be well sited/located
- It must be adequately lighted
- There must be proper sanitation/sewage/refuse/waste disposal
- It must be accessible to people
- It must be close to social amenities/named
- It should be far from noisy places
- It must be built with standard building materials/named
- It must be built on strong foundation
(d) Effects of collapsed building on humans
- It could lead to injury
- It could lead to outbreak of disease
- It could lead to loss of properties/poverty/debt
- It could lead to high blood pressure/mental/emotional/psychological problem
- It could lead to offensive odour/dust/pollution
- It could lead to poor hygiene
- It could lead to death
(e)(i) Pollution that would result from building collapse
- Noise/sound pollution
- Land/soil pollution
- Air pollution
(ii) Pollution common in industrial areas
- Noise/sound pollution
- Land/soil pollution
- Air pollution
- Water pollution