As with all major projects, there were significant challenges to be overcome. The local climate created an issue for the energy performance of the terminal. Whilst daytime temperatures were extremely high, as dusk fell there was a significant drop in temperature. Such dramatic fluctuations in temperature can lead to building expansion and contraction.To combat this issue, a 300mm void was stipulated between the steel standing seam system and the moulded concrete shells. These were also insulated and protected by a single-ply weatherproof membrane. As a further measure of protection, several 50mm holes were drilled into the centre of each dome to encourage convection and prevent over-heating.