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    krishnasagar473's Avatar
    krishnasagar473 Posts: 3, Reputation: 1
    New Member
     
    #1

    May 29, 2009, 10:28 PM
    What is risers . Its how many types of risers .can explain briefly
    Dear sir can u explain please
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
     
    #2

    May 30, 2009, 04:05 AM
    http://www.americanaldes.com/Editable/PDFFiles/Ventilation%20Solutions/Controlling-Stack-Effect.pdf

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