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Recent content by mmettler

  1. mmettler

    Coal Belt Conveyor Truss Deflecton

    There is a horizontal truss for both the top and bottom chords. Whether they are adequate would require an analysis.
  2. mmettler

    Coal Belt Conveyor Truss Deflecton

    andysines Thank you for your responses. I am still trying sort out when exactly the reported truss deflection was measured, mainly were they conveying coal on the belt at the time of the survey. When I reviewed the conveyor last Thursday, the truss deflection was visible with no coal being...
  3. mmettler

    Coal Belt Conveyor Truss Deflecton

    hokie66: Understood and for last couple of years the conveyor operates as intended. The deflection observed is bothering the mine's engineer and he is looking for peace of mind as well as any advice regarding repair or replacement. I was curios if there is a standard or guideline for...
  4. mmettler

    Coal Belt Conveyor Truss Deflecton

    paddingtongreen: My main questions are what standards and guidelines exist for servicibility (deflection) limits for trusses supporting material conveyors and is span/241 an unreasonable amount of in-service deflection? It shall be noted the deflection observed appears to be permanent.
  5. mmettler

    Coal Belt Conveyor Truss Deflecton

    I am working with a coal mine that has been in operation for approximately 4.5 years. The conveyor that originates near the mine portal runs horizonatally along the ground and then extends up to a stacking tube structure at a fairly steep incline. The conveyor was constructed of steel box...
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