As an extension to Wapco-Lafarge Ewekoro I & II plants and on 17.600 m2 land, the manufacturing plant was situated, occupying 160X80m. Using the pre-engineered steel building technology “PEB” as a structural system to solve the issue of the long span of the building width, our design solution successfully reduced the cost of the construction up to 60%, in addition to satisfying a wide range of structural and functional requirements. as well, this structural system solution has assisted to provide more flexibility in the architectural aspect, improve the natural light, and create a healthy environment for the interior spaces.