建筑投资 meaning in English

building investment
construction investment

Because of over investment and long construction period in tall building , design staff makes great efforts to give an optimization design in order to achieve the best structural layout and practice economy all the time
高层建筑投资大、建设周期长，对其进行优化设计以期获得最优方案并节约投资，一直是结构设计人员所努力的方向。
. because of overinvestment and long construction period in tall building , design staff make great efforts to give an optimization design in order to achieve the best structural layout and practise economy all the time . but on account of hugeness of design variable , constraint condition and computational complexity , the achievement of structural optimization for high rise building in engineering had droped behind the progress of theory out and away in recent years
高层建筑投资大，建设周期长，对其进行优化设计以期获得最优结构方案并节约投资，一直是结构工程师所努力的。但是由于设计变量、约束条件、计算量过于庞大的原因，其成果还较少应用于工程实际，目前远远落后于理论进展。