Mega steel trusses is a building invention that allows the weight of a roof to be distributed to the outer walls for better support. Essentially, a truss is triangular in shape, or composed of multiple triangles. This shape gives the building more support and allows the builder to use fewer materials to achieve the same function.
The primary advantage of a truss is that it can be installed quickly and cost-effectively, even without heavy equipment to lift it into place. Most trusses are factory-built, and delivered to the job site as a complete set for the structure to be built. A truss is traditionally leveraged to the top of the wall, and then slid into position and pivoted upright before being fastened in place.
The shape of a triangle allows all of the weight applied to the sides (or legs) to be redistributed down and away from the center. In trusses, this transfers the entire weight of the roof to the outer walls, and has the advantage of allowing the interior walls to be built arbitrarily, or even moved or omitted.
Trusses are an integral part of modern architecture and building. Since they can carry so much weight by themselves, their presence enables builders to achieve maximal economy of materials, easily cover large distances with simple truss meshes, evenly take the load from heavy structures, easily access entire structure, save on expensive materials, and build structures that are accessible for maintenance after initial construction.