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Table 2 Initial cost survey for different systems

From: Multicriteria decision-making tool for investigating the feasibility of the green roof systems in Egypt

System

Company 1

Company 2

Company 3

Average Price

NFT

225,000

250,000

265,000

972 EGP m−2

DWC

28,000

30,000

33,000

124 EGP m−2

SB

82,000

85,000

90,000

105 EGP m−2