S e c t i on3 - P a ge 1 0 May 2013 Installation Guidelines • 28mm hole diameters a re pr eferr ed. • Hole depth is critical. Hole depth should be appr oximately 155mm shorter than the bolt length. • This allows for suf fcient tail to ft accessories, r oof plate, collar/wedges T ensioner Unit. • After insertion of the chemical anchors the bolt is r otated thr ough the anchors while pushing the bolt, fully , to the back of the hole. • It is important to follow the chemical manufactur ers r ecommended mixing and hold times as printed on the chemical anchor cartons. DO NOT OVER MIX. • The tensioner unit is connected to the HI-TEN Strand Bolt and tension applied. • For further details r efer to DSI’ s T ensioner Unit user instruction guide. Standar d Lengths Packaging • Standar d HI-TEN Strand Bolts lengths range fr om 4100 to 8100mm. • Collar/wedge assemblies a re supplied separately to the bolt. • Non-standar d r equir ements a re available by negotiation. HI-TEN Strand Bolt General Featur es • The DSI HI-TEN Strand Bolt is a cable designed to be installed as a long r ock bolt which is capable of being post-tensioned at the face, orout-bye, to loads of up to 27 tonnes using the DSI T ensioner Unit. • The HI-TEN Strand Bolt is manufactur ed fr om 21 wir e strand having a 12mm squar e, for mixing chemical anchors, welded to one end ofthe strand. • The HI-TEN Strand Bolt has a special collar and segmented wedge, which can sustain collar loads of between 57 and 60 tons. • The HI-TEN Strand Bolt is designed for high pr e-tensioning using a point anchor system. • If full encapsulation is r equir ed, extra slow speed chemical anchors of 20 minutes set time ar e available. • The HI-TEN Strand Bolt can also be ef fectively used with cementitious gr outs. • The HI-TEN Strand Bolt concept allows a longer than seam height bolt to be installed at up to 30° fr om the vertical at the face, or out-bye, to supplement existing strata r einfor cement. Compatible domed plates ar e available to be used with the HI-TEN Strand Bolt. • The HI-TEN Strand Bolt system is patent pending. Physical Pr operties Y ield Str ength 108,000 lbs Ultimate T ensile Str ength 124,000 lbs Uniform Elongation 3-4Mass Per ft 1.90lb Cable (Strand) Diameter 0.9" www .dsiundergr ound.com