In this paper,expansion additive(UEA) and fly ash are added in the concrete.The self water-proof configuration and construction technique without any cracks are used in the basement of office block.Between the first axes and second axes,the position which is later-concreted zone,called as "expansion reinforcement belt",where expansion additive dosage is 12 percent of all cementitious materials and almost 10 to15 percent of temperature reinforcing steel bar is increased.The steel wire gridding with 5 millime...