CIB W116—Smart and Sustainable Built Environments - Test Input

Table 2: Economic impact of flood on households
N frequency percentage N Frequency Percentage
10,000 – 100,000 19 59.38 10,000 – 100,000 1 5.26
FLATS
DUPLE
100,000 – 200,000 4 12.5
X
100,000 – 200,000 6 31.58
200,000 – 300,000 1 3.13 200,000 – 300,000 2 10.53
300,000 – 400,000 1 3.13 300,000 – 400,000 3 15.79
Above 400,000 7 21.88 Above 400,000 6 31.58
Total 32 100
Total 18 100
Mean damage= N1557,656
Mean damage=272,500
Source: Field survey 2007
The average loss or damage on property caused by the flooding in flats is N157,655.25 while that of the
duplex is N272,500.00. This could be explained by the fact that people staying in the duplex area are
richer and have more valuable assets. The figures above indicate the economic impact of the flooding in
the study area due to lack of green design. This is also adverse to environmental sustainability. The total
cost of flood related damage on their asset is N338,248,755 (N240,345,000 for duplex houses and
N97,903,755 for flats).
Table 3: Preference Hierarchy for Building Services/Component (Residential Development)
Variables Relative Index Ranks
Constant Electricity 0.912 1
Reliable Water 0.900 2
Amount of space 0.899 3
External/internal design 0.849 4
Window type/ventilation 0.771 5
Floor finishing 0.752 6
Natural lighting 0.744 7
Wall finishing 0.723 8
Security 0.721 9
Mobile phone reception 0.716 10
Parking space 0.708 11
Toilet quality 0.708 12
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