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  1. Coalhouse

    vba excel register udf not working

    Hello. I am doing a udf. but I want the udf to provide some help, guidance on the arguments. it does not work. i have excel 365. Not that the addin works but I can not get the argument help to display appropriately. I tried everything. Pls help. Sub RegisterUDF()...
  2. Coalhouse

    EN 13480 calculation

    question to whomever may be willing and able to help. Within EN 13480-3 equations 6.1-1 and 6.1-3 for minimum required wall thickness without allowances/tolerances. The equations (6.1-1 or 6.1-3) depends on Do/Di. is Di related to the minimum thickness calculated? Or Di is the chosen wall...
  3. Coalhouse

    rusty beam very rusty

    Hi. I have found this very rusty beam. what can I do to treat it? regards, https://files.engineering.com/getfile.aspx?folder=dd9e8b88-f34f-42db-abb3-83f70ab89cfc&file=WhatsApp_Image_2022-02-12_at_13.36.36.jpeg
  4. Coalhouse

    how to prove, practically, the depth of a foundation footing made by a builder

    Hi. I would like to know what are the most economic and approved method to prove the depth of a concrete foundation?
  5. Coalhouse

    foundation pad not deep enough

    Good Morning. I am asking for a friend. a builder who took the freedom to not do as per the structural engineer design. The foundation pad should have been excavated with 1.25m depth. However, it seems like building control can only see on the photo 0.6m deep and brought this out to the...
  6. Coalhouse

    Brand new air cooled chiller £60k out of order within 10 days

    Hi, we have just bought a brand new air cooled chiller. within a few days and on the hottest day of summer, the discharge pressure relief valve failed. The manufacturer stated that vibration caused the valve to fail...it has been out for the past 30 days. My questions are: could it be a...
  7. Coalhouse

    steam carry over in hrsg

    hope you are all well, thanks for your answer one of the specification I am working on states that the minimum carry over from steam will be 0.04% for HP 0.03% for LP 0.02% for IP. my questions are below: where does this figure comes from (empirical or first principle) What drive this...
  8. Coalhouse

    circulating fluidized bed combustion

    Good Morning, could you please tell me what is the difference in design between the FW and Alstom Circulating fluidized bed boilers. Regards,

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