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ramu_se
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Joined: 30 Oct 2017
Posts: 47
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 Posted: Mon Jan 03, 2022 8:44 am Post subject: Tread-rise or freestanding type staircase slope |
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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
General Sponsor
Joined: 17 Apr 2008
Posts: 4853
Location: NCR Faridabad, E mail suraj_engineer@yahoo.co.uk
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| Posted: Mon Jan 03, 2022 10:31 am Post subject: Stair steps? |
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| Is it really engineering question?
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vikram.jeet
General Sponsor
Joined: 26 Jan 2003
Posts: 3367
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| Posted: Tue Jan 04, 2022 5:58 am Post subject: |
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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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Joined: 30 Oct 2017
Posts: 47
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| Posted: Tue Jan 04, 2022 7:05 am Post subject: |
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| Thank you sir.
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sspawar
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Joined: 05 Jun 2009
Posts: 1196
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| Posted: Wed Jan 05, 2022 8:14 am Post subject: Re: Tread-rise or freestanding type staircase slope |
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| 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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Joined: 05 Jun 2009
Posts: 1196
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| Posted: Thu Jan 13, 2022 7:50 am Post subject: |
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Find an example of Tread and Rise of a ladder for different heights
Warning: Make sure you scan the downloaded attachment with updated antivirus tools before opening them. They may contain viruses.
Use online scanners here and here to upload downloaded attachment to check for safety.
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Download |
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Rise n Treads of a ladder for dufferent ht..pdf |
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550.56 KB |
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