1. Construction Safety Research Center, Department of Civil and Architectural Engineering, Lawrence Technological University, 21000 West Ten Mile Rd., Southfield, MI 48075, USA
2. Lawrence Technological University, 21000 West Ten Mile Rd., Southfield, MI 48075, USA
3. Department of Reconstruction and Projects, University of Baghdad, Baghdad 10071, Iraq
4. Department of Civil and Architectural Engineering, Lawrence Technological University, 21000 West Ten Mile Rd., Southfield, MI 48075, USA