抄録
Next generation waterproofing specifications were discussed in the paper. Much amount of greenhouse gas emission and much cost during service life of 100 years were pointed out through the LCCO2 and LCC calculations of waterproofing membranes renovated by the present specifications. For reducing them, two types of specifications for future waterproofing system, such as an envelope type specification of requiring very few times renovation and a built-in type specification of not requiring renovation, were proposed. The calculated results for the proposed specifications by the new concept show much amount of reduction in LCCO2 and LCC.
