Leaderboard

The type of footing you have mentioned, is normally used in single-story steel frame structures, where wind effects are pronounced, in order to counter wind uplift. you will need structural design calculations of the apartment building, especially the extension portion, to find out the values of reaction forces used for the footing design. Cross-checking of these design calculations, in the light of relevant provisions of applicable design codes, may lead you to the conclusion regarding adequacy or inadequacy of existing footings. In absence of design calculations, you will have to model the structure for determining critical reaction forces for foundation design, using: - the section and material properties of provided structural members, - applicable structural loads, and - governing design codes & standards. Regards.