https://www.123articleonline.com/rss/author/468293/mark-cooperArticles written by Mark Cooper from 123ArticleOnline.comen-usCopyright (c) 123ArticleOnline.com All rights reserved. https://www.123articleonline.com/articles/1545093/strengthening-multi-family-structures-through-seismic-retrofitting Soft Story Wood Frame Buildings: Typically built between 1950 and 1980, these multi story residential properties feature large ground level openings for vehicle parking or commercial storefronts, supporting residential apartments on upper floors.