S e c t i on 2 - P a ge 7 May 2013 D-Dome TM Rebar Rockbolts (patent pending) #7 (22m) Dimensions and Regulatory Requir ements • see Rebar Rockbolts page for size and r egulatory r equir ement characteristics of D-Dome TM Rebar Rockbolts T echnical Data • the D-Dome TM Rebar Rockbolts pr oduces up to a 60 incr ease in head str ength versus ASTM F432.95 r equir ements Side View Comparison • the D-Dome TM headed r ebar bolt of fers incr eased security against r oof loading • please contact a local sales r epr esentative for a sample pr oduct and to arrange for a trial r egular head for comparison D-Dome™ head for comparison T raditional headed r ebar bolt loaded to 32,000 lbs D-Dome TM headed r ebar bolt loaded to 54,000 lbs www .dsiundergr ound.com