"In terms of rock costs it is 50 % more economical," says Shiau, although on this occasion extra research and testing to allow for this being the first such use of the mixture meant that it only cut costs by about one third.
「單就塊石成本而言，節省近一半」，不過，蕭家勝表示，由於首度以此為工程材料，花了一些研發及實驗費用。所以，就整體工程經費來說，保守估計節省了三分之一。