As a part of concept building classes, A site visit was conducted for 3rd year students of MBS SPA at the under construction office complex for petronet LNG limited situated in Dwarka Sector 14.The structure is completely based on Green Building concept and uses advanced steel structure technology. Students explored office building in its technical perspective. In this visit the students were able to know more about advanced steel structure design. They observed inclined steel columns, fly ash bricks, joints of steel structure, hinged supports and the services in the basement of the building.