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Mono beam stairs
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michel melon
Belgium

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June 18, 2021 - 7:01 am
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Hy Duayne,

 

This would certainly be enough for a wooden beam which will be your solution as SD cannot provide a boxed metal beam with step holders. It is always advised to add a support around the centre of the beam to counter bounce. Another solution would be to enlarge the base of the beam so that here the bounce effect is cancelled too but it requires much more material than a single support but is aesthetic the better option. 

 

Just to give you an idea here is another version of that stair 

 

regards

Michel 

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Duayne Naugle

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June 18, 2021 - 3:49 am
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Central cut stringer 

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michel melon
Belgium

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June 14, 2021 - 7:57 am
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Hi Duayne

 

Usually, it is around 5 inches thickness and 8 inches width. I would definitely set a support to rule out bounce. Please send us your stair drawing when done so that we can have a closer look. 

 

regards

Michel 

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Duayne Naugle

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June 14, 2021 - 2:57 am
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I have been asked to design a curved stairway with a mono beam , the height is 124”  , it will have 17 risers and 16 treads. ,  before drawing it up I would like to ask a few questions that can hopefully someone can answer, 

 how thick and wide should the mono beam be if built out of wood , is it ‘s size dependent on the total width of the stairs which is to be 48” 

this is a big stairway. , would I need some support from the floor to the middle of the mono beam to take some bounce out of it

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