Sinusoidal shaped member units and support member units are parts that form pre-stressed assemblies having flexural properties. Sinusoidal shaped members are relaxed material members that have been elastically deformed. Support members maintain the elastically deformed state of the sinusoidal shaped members. The sinusoidal shaped members and support members are organized into pre-stressed curvilinear assemblies containing stored elastic potential energy that is equal to the work done by the forces that deformed their pre-stressed structure. The assemblies' sinusoidal shaped members and support members are adapted to use materials having exceptional mechanical properties and flexural strength. This includes nano-composites. The assemblies' pre-stressed state enhances its mechanical, electrical and structural performance. The size, number, density and possible geometric configurations of the sinusoidal shaped member units and support member units within an assembly/structure is vast. Products of this sinusoidal building system have mechanical and structural applications and can be manufactured using an automated process.