Harper, RichardProcter, RobRandall, DaveRouncefield, Mark2023-06-082023-06-082001https://dl.eusset.eu/handle/20.500.12015/4788This paper presents detailed examples of document use and re-use, through an ethnographic study of the knowledge work associated with road safety audit in a civil engineering consultancy The paper incorporates some detailed observation of practices, conversations, and other activities occurring around document re-use in everyday work. It outlines some aspects of the everyday use and re-use of engineering documents in the practical accomplishment of everyday knowledge work as the first stage in considering how these activities can be technologically supported.endocument useknowledge workethnography'Safety in Numbers': Calculation and Document Re-Use in Knowledge Work10.1145/500286.500322