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  1. BrianIreland

    Minimum Gradient of Foul Rising Main

    I am trying to find the minimum slope (gradient) for a rising main (sewage). I presume that slope "up" or "down" is irrelevant as I am worried about both the location of air valves and scour (washout) valves. While I'm at it, any maximum gradient? Also, are scour valves required at all low...
  2. BrianIreland

    Design of Manhole >6m depth

    I am designing a manhole with a depth of 8m. Is there any special considerations I should be aware of? does it have to be a huge chamber (& what is a rest chamber)?
  3. BrianIreland

    Basic Masonry Bridge Building in Developing Countries

    Thanks All, The info. supplied will certainly help me out a lot (and give me more confidence at the end of the day). Anbesaw: WIll try to get my hands on the Doc. you have recommended. Thanks. CTSeng: A bit like yourself, I found myself getting tired of office work (5yrs) in an Environmental...
  4. BrianIreland

    Question from a begineer

    THere can be two or more outlets. Usually either if a system works in a circuitous way, the additional pipe may be off loading flow to less strained pipes, or (more usual) if a storm overflow pipe is in operation. This works whereby if the flow builds up in the pipe, it is discharged directly to...
  5. BrianIreland

    Proportional Scaling of XY Plot in Excel

    Yakpol, Very interesting Webpage. Nice to see the sharing of information. Keep up the good work!
  6. BrianIreland

    Printing Excel Cells in AutoCAD

    SparWeb, I'm not sure I follow your question but in the past I have used excel data to draw stuff in Autocad. Generally, it's copying commands and lengths, angles, etc. of lines (from excel) and pasting them into the script box of Acad. I have created long-sections of pipes for example purely...
  7. BrianIreland

    Basic Masonry Bridge Building in Developing Countries

    Thanks for the replies. Isntbard:Thanks for the cautionary note. The ground is generally clay and sand! Not Ideal. Wouldn't masonry arches be quite difficult to construct? Even rock is difficult to come by, and I wouldn't be quite sure of driving some of our ten ton trucks over it. I was...
  8. BrianIreland

    Basic Masonry Bridge Building in Developing Countries

    I'm a civil (mainly Environmental Office Work) engineer who has just found myself in Africa building small bridges. What's around are bricks and cement, and the odd steel beams. Having never partaken in this type of work before, I would welcome any tips or comments. I intend to build masnry...

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