Walls made from I Beams are both, extremley durable and warm. It practiacally eliminates the issue of linear cold bridging and the warping issues with traditional timber stud walls.
Floor constructions with I-Beams allow longer spans without supporting walls or thickening the Joists. They can also eliminate a lot of dimensional deveation which often causes squeeking floors as well as beam deflection causing cracks in plasteboard joints on ceilings.
I-Beams can be used as the perfect rafter due to their stabilty and strength. They can be used in all types of roofs, from flat roof to hip roofs.