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  1. Rich134

    Air Exchange Rule of Thumb

    Is there a "Rule of Thumb" for the number of air exchanges for a light manufacturing industry? There are no chemicals in the indoor environment. I have gone through Industrial Ventilation: A Manual of Recommended Practice by ACGIH without finding any guidelines that apply to my...
  2. Rich134

    PE for California SPCC

    I hope this message is not in violation of the guidelines. I have read them and I think it is OK. If not, I apologize in advance. I am a consultant and one of my customers has a plant in Fullerton CA. Technically, they don't need an SPCC, but they want one anyway. California requires SPCCs to...
  3. Rich134

    Moment due to wind load.

    Thanks guys. That was exactly what I needed. The API safety factor is 1.5. Good call.
  4. Rich134

    Moment due to wind load.

    Hello to You All I am new to this site and I have a question. I am considering an API requirement for achoring vertical storage tanks. They say that a 100 mph wind will create 18 Lbf per square foot of projected surface. If the moment tending to overturn the tank is below a given level, no...
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