http://www.dot.state.oh.us/divisions/constructionmgt/specifications/2008cms/500/514.htm - 221KB - zoliva - 4/20/2009
http://www.osha.gov/dts/osta/otm/otm_v/otm_v_3.html - 104KB
http://www.dot.state.oh.us/divisions/constructionmgt/2010spec/2010files/2008_with ss800 04272009.docx - 2MB - Robert Jessberger - 5/1/2009