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Recent content by bob116

  1. bob116

    crushed rock footings for 2500kW screw compressors

    Hello, I am involved in the design of foundations of screw compressors of 2500kW (3400 hp). One of the alternatives for screw compressors, because of their lower vibration levels compared to reciprocating, is compacted crushed rock instead of concrete. Screw compressors do not need the huge...
  2. bob116

    clip or bolt hold down for process skid

    I have a number of chemical process skids under my control and they are fixed down to the concrete with an inverted angle which is then bolted down thru a hold down bolt into the concrete. Underside of skid is grouted to the concrete in the vicinity of the hold down. About 3 per side of skid...
  3. bob116

    underlays to concrete: blinding, poly sheet, sand

    Hello all. Can anyone advise the different uses of blinding concrete, polythene sheeting and sand as underlays for various concrete structures poured on ground? This is for Australian conditions.I have always used whatever standard drawings were to hand but now I find myself working for a firm...

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