Key differences are: In PEB system the complete steel building package is delivered to site from a single supplier as a fully finished product. This includes the structural steel, cladding system and building accessories. Site erection is fast and simple - just bolting together the various building components as per the erection drawings provided. No site fabrication or welding is involved. Due to this, quality is far more superior and a large chunk of time is saved in comparison to conventional steel construction methods.
PEB system is highly efficient in design due to synergy between building components. Primary members are made of tapered built-up sections and roof/wall secondary members from cold rolled sections designed as continuous beams. High strength steel is used and all structural elements are fully optimized by the proprietary computerized design program. This leads to significant reduction in dead load reactions to foundations.