Level of development (LOD) 400 objects have the required information for definitively defining a list of materials and their quantities for a certain scope of construction work. Generating this information each day and operating LOD400 objects through the plan-do-check-act (PDCA) cycle on a daily basis could provide the quantitative basis for proactive and precise day-to-day field control. However, the high frequency of the cycle and the granularity of LOD400 make the process time-consuming and onerous for a foreman. The contribution of this research is an ontology that enables a foreman to go through the PDCA cycle on a daily basis with LOD400 objects and generate six information items (actual date of work completed, products built, location of products built, quantities of materials installed, number of workers that were on site, and performance metric) after the check step C of the PDCA cycle. The ontology was developed into a software prototype for field experiments and the results show that foremen can go through the daily PDCA cycle with LOD400 objects in 2 min and 47 s on average. The average usability score of the prototype was 95, which falls between “excellent” and “best imaginable” on the System Usability Scale (SUS).

开发级别（LOD）400对象具有必需的信息，用于明确定义特定工作范围内的材料及其数量清单。每天生成此信息，并每天通过“计划-检查-行动”（PDCA）周期操作LOD400对象，可以为主动和精确的日常现场控制提供定量依据。但是，周期的高频率和LOD400的粒度使该过程既费时又费工。这项研究的成果是一种本体论，它可使领班人每天使用LOD400对象进行PDCA循环，并生成六个信息项（完成工作的实际日期，制造的产品，制造的产品的位置，安装的材料的数量，现场的工人数量，和性能指标）。将该本体开发为用于现场实验的软件原型，结果表明，工头平均每天可以在2分钟和47 s的时间内用LOD400对象经历PDCA循环。原型的平均可用性得分为95，在系统可用性等级（SUS）中介于“优秀”和“最佳可想象”之间。