Investor Presentaiton
Clean-up Cost of Residential Building: Methodology
It is assumed that all inundated buildings not requiring repair will incur
clean-up costs.
Clean-up costs mainly involve disinfecting building premises and minor
repairs including cleaning of the floor, whitewashing walls etc.
■ Based on field surveys, Clean-up costs are assessed to be around Tk. 500
for jhupri, kutcha and semi-pucca structures, and Tk. 1000, Tk. 2,000 and
Tk. 4,000 respectively for EWS, MIG, and HIG buildings.
■ The building clean-up costs are then extrapolated to 2050 costs.
Damage of Residential Property: Methodology
Extensive residential property damage is caused by sudden & prolonged
flooding, especially if household property cannot be moved to upper floors.
Building Blocks:
The damage to residential property is estimated based on the total
property exposed to inundation in the first floor times a property damage
factor.
The estimate of residential property is based on the household income in
Dhaka. In particular, it is assumed that the value of the property owned
depends on the savings accumulated in each income category over a 5
year period. Savings rate differs across income groups.
■ The property damage factor is based on the depth and duration of flooding.
Based on observation, it is assumed that a maximum of 33% of household
property will be damaged if buildings are submerged for 10 or more days
with inundation depth > 1.5 m with proportional decrease for fewer days of
inundation. The corresponding maximum damage for depths 0.75 m - 1.5
m and 0.25 m - 0.75 m are assumed to be 25% and 20%.
08/12/2016
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