Chapter3 Labor， Material and Equipment Utilization
劳动力、材料和设备利用
影响工地生产率的因素
Job—site productivity is influenced by many factors which can be characterized either as labor characteristics, project work conditions or as non-productive activities。
影响工地生产率的因素很多,大致分为劳动力特性、工程工作条件（环境）和非生产性活动。
The labor characteristics include：
劳力特性包含:
Age, skill and experience of workforce
Leadership and motivation of workforce
员工的年龄、技能和工作经验
员工的领导力和动力
The project work conditions include among other factors：
工程施工环境因素包括：
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