| Masons ranked highest of all construction trades for back injuries with time away from work in 2005 (CPWR Chart Book, 2008). They also have elevated rates of shoulder injuries associated with lifting heavy loads above their shoulders. Use of lighter weight materials, new materials such as Autoclaved Aerated Concrete (AAC), and double open-ended H-block, plus work practices, such as high lift grouting and using lift teams for 12” block have been recommended. However, it is not known whether these innovations significantly reduce injury risk. Researchers at the University of Oregon and Eastern Washington University compared masons laying CMU versus AAC, and use of lift teams with 12” block, to assess differences in shoulder and back stresses. Findings from these studies will be presented in a user-friendly, interactive format appropriate for construction managers and safety officers. |