Building Design + Construction ranks the nation’s largest AEC firms in their Giants 300 Report. Data is based on self-reported information by the firms. OLA was ranked 71 in the Top Engineering Firms. See the full list of top engineering firms here. OLA also ranked in different building sectors including: 65th in office engineering firms, 46 in top multifamily engineering firms, 66 in top healthcare engineering firms, and 39th top k-12 engineering firms.