Quite possibly one of the more challenging problems for engineers to address on construction projects is thermal movement of piping. There are however solutions to mitigate the risks associated with potential building damage that thermal movement can cause. In this Part One in a two-part series Marcel Ley, Regional Sales Manager Victaulic, explains why flexible grooved mechanical couplings are the solution. Thermal movement is by far one of the more challenging aspects of construction projects for engineers. This is because all materials, including pipes, experience dimension changes as a result of temperature fluctuation and their coefficient of expansion. In fact, there is a 19mm expansion and contraction rate for every 38-degrees Celsius change in temperature for every 30m of common carbon steel pipe. When a system is subjected to excess temperature, it may experience horizontal movement, vertical movement and angular deflection simultaneously. In the instance of horizontal piping, the major obstacle is typically the space constraints around the length and turns of the pipe. For vertical piping, considerations are different and involve dynamic, static and elevation head calcu...