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  1. brf007

    Corrosion of Marine Bollard Bolts

    thread321-193907 Did an inspection of some bollards yesterday and every bolt was damaged by corrosion to various degrees? I'm thinking of stainless steel bolts for the remeidial spoecification? Has no one else thought of this? Surely not!! I've done an online search without success of...
  2. brf007

    Properties of re-cycled concrete

    I'm in the process of designing a bulkhead wall to contain recycled concrete rubble. Has any one got any idea of the friction angle of recycled concrete. Intuition indicates 35 degrees. Am I being overconservative? Would appreciate some comment. Thanks Bruce Forbes
  3. brf007

    Coal Handling

    Anyone got any data on the friction angle of raw coal. I'm designing a coal bunker wall for a cement works. I'm assuming 35 degrees, conservatively. Maybe 40 degrees?? Would appreciate some comment. Thanks in anticipation Bruce Forbes
  4. brf007

    Green Waste Mulcher Design

    I have been approached by a waste process operator that mulchers / shreds green waste up to 100 mm diameter, down to a maximum size of 100 x 20 mm. The mulcher has not been well designed and requires modification to opertae more efficiently. Would appreciate advice or guidance on where I can...
  5. brf007

    Stormwater Vortex Separator

    Currently involved in a project where we wish to separate out coarse particles of metal from stormwater runoff. One proposal is to use a 'Hydrodynamic Vortex Separator'. I appreciate the principle of this type of system, however, I have not had any experience with them. Can anyone offer...

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