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  1. fred181

    Control valves and velocity

    When evaluating a control valve for high velocity, at what cross section are you calculating the velocity? I have always calculated at the valve exit. This is a steam pressure reducing application. I am evaluating a selection made by a manufacturer's rep. The rep uses a term "body velocity"...
  2. fred181

    Slab-on-grade levelness, house settling

    Yes, they are all very much related. I have two adjacent corners of my house that are possibly/likely(?) settling. I have had a engineering tech from a structural firm and an E.I.T. from a geotech look at it. Both have made statements that are demonstrably untrue. I would like to come to a...
  3. fred181

    Slab-on-grade levelness, house settling

    Jayrod12, To be clear, the homebuilder's geotech told me the soil is NOT moisture sensitive. That is, not significantly affected by moisture content.
  4. fred181

    Slab-on-grade levelness, house settling

    The house is almost 5 years old. The cracking in the drywall appeared right at the start of year 4. I acknowledge that anything is possible, but to me the most likely answer seems to be that the house is settling. I've also been told by a geotech that my soil is not moisture sensitive...
  5. fred181

    Slab-on-grade levelness, house settling

    What are common construction tolerances for slab-on-grade flooring for residential? I have a fall of 1-3/8" over ~12.5 ft towards a corner of my house. Despite accompanying cracking in the drywall at this corner, I am told by the Home Builder's engineer, that this is not evidence of...
  6. fred181

    Homebuilder/Engineering firm questionable ethics

    MintJulep, Good suggestion wrt the reports. You are right and ultimately that is the direction I am headed. Just been frustrating trying to get the engineer to answer basic questions about his report, and for the builder to put a critical eye to the report they were given so we don't have...
  7. fred181

    Homebuilder/Engineering firm questionable ethics

    phamENG, appreciate the response. I have no issue with the inspection being completed by someone other than an engineer. I didn't expect an engineer to my house. I am frustrated with both the eng firm and builder for misrepresenting their inspector as an engineer, however. Particularly...
  8. fred181

    grading at house footing, soil strength

    The grading around certain areas of my house slopes upwards, causing water to pool around a structural post supporting a second floor. I have asked the builder to correct the grading since I first moved into the house. After three years, signs of house settling (diagonal cracking in wall...
  9. fred181

    Homebuilder/Engineering firm questionable ethics

    My home is experiencing some settling issues. Since it is under warranty, I am working with the builder through a warranty claim to get it fixed. The builder hired a local engineering firm (a PLLC) to perform the inspection of the house and issue a report with corrective actions. I was...
  10. fred181

    Equivalent Flange Pressure Method

    I understand the equivalent pressure method to be a conservative method for evaluating tendency of a pipe flange to leak, and particularly when using the temperature/pressure ratings lookup as the threshold. That said, for a scenario in which I have a class 250 flanged valve mated with a class...

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