S e c t i on 2 - P a ge 4 May 2013 Installation Accessories T andem Anchor • patented • slotted shell base r emoves the chance of sever ely twisted shells with leaves buckled inwar d onto the thr ead • the system incorporates both mechanical (expansion shell) r esin anchorage Other Rebar Pr oduct V ariations • coupled bolts • notched bolts (for bending) www .dsiundergr ound.com