Mark has worked extensively on office and commercial developments ranging from small complying development certificate and exempt development works to major commercial and office developments. Key to the success of these developments was having Mark involved early on in the design whereby the exit arrangements, travel distances, compartmentation, fire resistance ratings, smoke hazard management etc were all rationalised, adding significant cost-benefit to the project before even getting off the ground. Other design features that required fire engineering assessment were design components such as open stairs connecting multiple levels without full fire separation, atria deign and its performance based smoke extract systems. In order to assess some of these issues, Mark undertook 3D computer fire and smoke modelling to look at the effects of fire and smoke spread in the building, in order to demonstrate that the acceptance criteria for life safety and fire service intervention was satisfied.