47. 到目前为止，数字建筑信息建模工具被用于界定技术要求。已利用这些工具进行模拟和分析，在项目中纳入建筑构件、系统和设备，确定性能和成本及设定设计阶段的项目基础；所涉任务包括：
47. Up to now, digital building information modelling tools have been used to define the technical requirements. These tools have allowed for simulations and analyses and inclusion of construction components, systems and equipment in the project, determining performance and costs and setting the project base for the design phase through the following tasks: