SanJuan EZ-Truss

Characteristics

The San Juan EZ-Truss is a new bar-cable truss system. It consists of two resin encapsulated roof bolts, THREADBAR ^®, two truss couplers, two lengths of strand with wedge and barrel assemblies pre-seated on one end, a center “dog-bone” style transition coupler, and two sets of wedges used to tension and seat the cross member after installation of the truss. When the cross member is tensioned, the resultant force introduces compressive forces into the mine roof, effectively decreasing the span of rock that is in tension in the mine roof.

• DSI’s SanJuan EZ Truss combines ease of installation with superior support performance
• Safe installation from the bolter without exposure to unsupported roof at any time
• Simple design: Less parts than similar truss systems
• Cast transition coupler allows the two opposing tension members to align themselves when tensioned
• No extra wedge barrels are necessary because wedge sets are seated into the transition coupler

Installation

The truss shoe and the inclined bolt can be installed first and separately from the truss. A piece of 0.6" cable is inserted into the end of truss shoe automatically engaging the cable grip wedges. This can be done without leaving the protection of the bolter. Then both cables are fed through the cable truss coupler in the middle. Wedges are installed into barrels against the cable truss coupler and stressing may commence using a hydraulic tensioning unit. The truss shoe is designed to accommodate #7 or #8 bar and angles between 45 and 60 degrees to the horizontal.

Equipment

• Apart from the SanJuan EZ-Truss, DSI also offers other truss systems such as bar slings, cable trusses, and cable slings
• As an additional service, DSI offers professional support during installation worldwide