Engineering sketches and drawings are the building blocks of technological design and production. These visual representations act as the means for organizing the design to production process, hence serving as a "social glue" both between individuals and between groups. The author discusses two main capacities such visual representations serve in facilitating distributed cognition in team design work As conscription devices, they enlist and organize group participation. As boundary objects, they facilitate the reading of alternative meanings by various groups involved in (...) the design process. The introduction of computer-aided design into this visual culture of engineering restructures relationships between workers in ways that can hamper the flexibility necessary for these crucial capacities to take place. The data are drawn from a study of the daily practices of engineers engaged in redesigning a turbine engine package. The method is participant observation. (shrink)

This article compares two cultures of engineering design, one flexible and interactive, the other rigid and hierarchical. It examines the practices of design engineers who use a mixture of paper documents and computer graphics systems and contrasts these with the practices of workers reengineering their own work process and its technological support system, using predesigned software. Based on the idea from actor network theory that objects participate in the shaping of new technologies and the networks that build them, the study (...) reveals that design cultures are intrinsically tied to the way in which their representations are constructed because such representations—sketches, drawings, prototypes—are the heart of design work; such design tools can engage or restrict participation in the design process; politics in the form of management prerogatives can be built into a design tool, influencing the range of creativity allowed and innovation accomplished in a given sociotechnological setting. (shrink)

This study explores building code negotiation between straw bale advocates’ ecology-oriented values and health and safety values that underlie building codes in general by focusing on how values and ethics are articulated and embodied in practice and discourse in the two states where straw bale building standards were first initiated. The local, contingent nature of interactions, grounded in particular practices, material culture, and written and visual texts in which values were embedded, coupled with organizational factors contributed to strategies for a (...) prescriptive code in Arizona and for a performance code in New Mexico. Examination of situated practice in standards development for unconventional materials that may not fit well with practices based on conventional technologies sheds light on how norms associated with the ethics of safe building are enmeshed in existing practice where they can be taken for granted as ethical absolutes and illustrates the kinds of insights available through paying attention to ethics in practice. (shrink)