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    aathithiya's Avatar
    aathithiya Posts: 11, Reputation: 1
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    #1

    Aug 28, 2012, 12:31 AM
    Calculate the Riser requirements
    How do you calculate the Riser requirements for Grey Cast iron castings?
    Can we be able to calculate for a block of size diameter 500mm and height 300mm
    joypulv's Avatar
    joypulv Posts: 21,591, Reputation: 2941
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    #2

    Aug 28, 2012, 01:46 AM
    Can you please explain further what you are building? I can't picture what sort of 'block' you are talking about.

    In the US, "the maximum riser height shall be 7¾ inches (196 mm). The riser shall be measured vertically between leading edges of the adjacent treads. The greatest riser height within any flight of stairs shall not exceed the smallest by more than 3/8 inch (9.5 mm)."

    500 mm x 300 mm = 19.7 inches x 11.8 inches

    I recently built steps for myself with a rise of only 5" - just right for a little old lady.
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
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    #3

    Aug 28, 2012, 05:30 AM
    This riser has nothing to do with stairs, it is the supply cavity for metal casting. This is an engineering question best answered by a professional. Doubt you will find an answer here.
    joypulv's Avatar
    joypulv Posts: 21,591, Reputation: 2941
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    #4

    Aug 28, 2012, 06:08 AM
    (I wondered, but couldn't resist bragging about my 5" high steps.)
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
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    #5

    Aug 28, 2012, 12:11 PM
    Quote Originally Posted by joypulv View Post
    (I wondered, but couldn't resist bragging about my 5" high steps.)
    The way you answer questions, I would have guessed bigger and younger.
    joypulv's Avatar
    joypulv Posts: 21,591, Reputation: 2941
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    #6

    Aug 28, 2012, 12:53 PM
    I wish, but I'm 65 and 5'1 and shrinking fast.
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
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    #7

    Aug 28, 2012, 01:47 PM
    Quote Originally Posted by joypulv View Post
    I wish, but I'm 65 and 5'1 and shrinking fast.
    Well I've got you beat, 71, 6 ft and shrunk 1" last year. At least you're not "shrinking Violet ".
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #8

    Aug 30, 2012, 03:42 PM
    Unlike Joy when I first saw the heading I thought we were discussing plumbing raisers.
    Interesting question but I don't think the OP gave out enough information to answer it.
    By raiser are you referring to a supply cavity?
    Can we be able to calculate for a block of size diameter 500mm and height 300mm
    And this is all that will being stored in this " supply cavity?
    This sounds like a question form the UK. Cheers, bTom
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
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    #9

    Aug 30, 2012, 04:40 PM
    Quote Originally Posted by speedball1 View Post
    Unlike Joy when I first saw the heading I thought we were discussing plumbing raisers.
    Interesting question but I don't think the OP gave out enough information to answer it.
    By raiser are you referring to a supply cavity?
    And this is all that will being stored in this " supply cavity?
    This sounds like a question form the UK. Cheers, bTom
    Note "grey iron casting " Foundry issue. Brian
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