“…The pattern of usage through phases 1-3 shows that the simulation tools have been used at "sometimes", "high", or "very high" extents at all design activities, but they have been used either with little, sometimes or high extents in phase 4 (Figure 2). This pattern is inconsistent with the results of a previous study which showed that IT tools usage was limited at the initial, analytical phase but increased at the conceptual and design production phases (Al-Douri, 2013). They are also inconsistent with the literature which suggests those tools are extensively used at the initial design phase when their influence is potentially the highest and then gradually declines in the following phases.…”