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Tread-rise or freestanding type staircase slope

 
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ramu_se
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PostPosted: Mon Jan 03, 2022 8:44 am    Post subject: Tread-rise or freestanding type staircase slope Reply with quote

Dear All,

How to find the slope of tread rise or free standing type staircase


Thank you,
Ramu.


Last edited by ramu_se on Mon Jan 03, 2022 11:08 am; edited 1 time in total
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suraj
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PostPosted: Mon Jan 03, 2022 10:31 am    Post subject: Stair steps? Reply with quote

Is it really engineering question?
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vikram.jeet
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PostPosted: Tue Jan 04, 2022 5:58 am    Post subject: Reply with quote

Tread : Rise  dimensions can be taken from National Building Code of India depending on type of occupancy.

Comfortable tread Rise dimensions are
Tread = 300mm.
Rise = 150mm

For Industrial Buildings above is comfortable but maximum rise to be 190mm  and  minimum tread dim 250mm is insisted.

Yes , working out slope is your prerogative .
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ramu_se
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PostPosted: Tue Jan 04, 2022 7:05 am    Post subject: Reply with quote

Thank you sir.
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sspawar
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PostPosted: Wed Jan 05, 2022 8:14 am    Post subject: Re: Tread-rise or freestanding type staircase slope Reply with quote

ramu_se wrote:
Dear All,

How to find the slope of tread rise or free standing type staircase


Thank you,
Ramu.


Are you talking about ladders. Which are not fixed as stairs.
Ladders Rise tread are always vary wrt the its over all slope with the wall etc.
One ladder can be placed with different height and its laps will be fixed but over all Tan (theeta) =Total Rise/total Run will be different in each case.
But there is limit for safe climbing to avoid slip or topple down back.
Suppose a ladder having 10 steps (Laps). Total length 18 feet. each lap will be of 1.50 feet.
then to rise 15 feet , Sine Theeta = 15/18 -Angle = 56.44 degree.
Now Tan theeta = 1.507 approx you can say for 1 foot tread, rise is 1.51 feet.
Regards
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sspawar
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PostPosted: Thu Jan 13, 2022 7:50 am    Post subject: Reply with quote

Find an example of Tread and Rise of a ladder for different heights


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Rise n Treads of a ladder for dufferent ht..pdf
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