\u3cp\u3eIn an interview study among 25 architects we investigated how activities were allocated over time in the design phase of an architectural project. Specifically, linking the literatures about pacing behavior and incubation, we set out to identify patterns related to how the interviewees paced their activity before a deadline. We used two types of materials to stimulate the answers in the interview: 1) standard graphs, developed in previous research; 2) a timeline. Five main themes emerged, that were termed pacing; milestones; multiple projects; deadlines; and quality–time trade-offs. Based upon the results we propose a model that includes overlapping U-shapes of activity, that is, most activity at the start of a project and right be...