Internal Stair case

[venkyn]

I need few suggestions with regard to Internal Stair Case.

* What is recommended height of each riser?
* What is the length of each stinger, is 11" is what followed?
* how many risers/steps does it come regularly?
* I have attached a sample u shaped staircase, does every landing to be on beam?

Regards,
Venky

[jult]

you can have 2 to 3 step mock up as per your alength available at site. please consider elders in your family and decide. it will give right decision

[blrsiteseeker]

ideal riser - 7" (lower is better, but there are some which are more than this and it is harder on your knees)
ideal width - 3.25' (the wider the better)
ideal tread width - 11" (if the tread width is not big enough for an adult to keep their feet completely on the step while using stairs, it becomes hazardous)

try not to make the stair case too narrow - particularly since you have a U shape, it will become difficult to carry large things (like dresser/bed/cot etc.) up the stairs.

[Darwin]

It should be 1;2 ratio 6 inch to 11 inch is a good dimension , afte laying granite or any stone a one inch extension will be give for tread , width wise 3ft 3 inch is best, but make sure the step connecting Fromm floor and roof should ve deducted and added floor tbickness , 15X 6'6" is the best dimension for stairs .No of risers will be 20 Treads 19

[rjblr]

what would be the idea width of normal internal concrete staircase. Some are suggesting 3' while one person told me 4', which seems to wide for internal staircase.
Appreciate any suggestion?

[Visualizer]

Ideal is 12 inch run (r) and 6 inch rise ( R).
Next best is 11 inch run and 7 inch rise.

The ideal formula is r+R = 18 and r + 2R = 24
Closer to 24 easier it is. So for example if you have lots of space and try to do 15 + 3 then r+2R is 21 and too low similarly 9 and 9 will be 27 and too steep and short.

[rjblr]

Ideal is 12"

Hi Visualizer,
We have thought about 6" rise and 11" tread.
Confusion is about width of the staircase. I see varying numbers from 3ft to 4ft being quoted.
I feel 3ft 6inches should be good. However one person suggested me to have 4ft wide staircase, if possible.
4ft wide may not bee needed and may make look the staircase disproportionate for 1800sft builtup/floor.
Your thoughts please?

[Visualizer]

If suppose you have some other way to take refrigerator, big, 55 inch TV, beds , sofa etc upstairs like a balcony open towards street from where rope and pully can be used to pull up big furniture then 3.5 feet is good else if staircase is only way to tale things up keep it 4.
About rise and run think once more.
Easy staircase is needed in duplex houses as you will be going up and down dozen times in a day. Don't listen to what people say. Giving space to staircase over anything else is good choice.
Taking 10 feet floor height (20 steps) you just need 20 inch more for 6" rise and 12 run. So suppose if you can give 1 feet 8 inch more in total run keep it 6 /12 trust me it is best combo. If you are keeping 11 inch go for 7/11 (American standard staircase).
Space to Staircase is best investment as it is most used space you can compromise with couple of feet in living or drawing room as you don't really use that volume necessarily but stairs are used 100%


My personal experience 6/12 is extremely easy .
I insisted on 6 - 12 whereas Architect was always harping on 7-11 .
In my house GF to FF is 6 - 12 as I forced him to adjust space. However I could not check slab design of top lev roof and architect apathy/mistake and lack on involvement a wrongly placed beam and cut in slab made me go for 7-11 from 1st to roof and I clearly feel difference while going up.

[rjblr]

Thank you Visualizer.
helps a lot. Completely agree with you that stairs gets used very often and therefore its important to make it convenient and safe for people.
Here is one more that I am debating on. We are thinking about using laminate for stairs instead of granite to make it less slippery. I spoke to couple of laminate guys and they said that it works well.
Wondering if you or anyone has given any thought to this?

[Visualizer]

I have gone for internal stairs with CNC cut steel the steps will be 1 inch polished wood plank
Looks extremily good but in hind site not a good design choice due to following reasons.

1. Unlike western countries where whole thing can be factory made with tight tolerances and you can buy from home depot and assemble DIY here it will be hand fabricated and worker might be doing it frst time in life.

Making steel fabricators work as per drawing is difficult. They are used to cut tubes and make conventional steel stairs in shops/ factories and designer stuff is difficult.
laying exact slope for stringer was herculean tasks . As i understand drawings it became my job to check. I only know how many times I measured each flight found some rises 6.25 or.runs 13 or 14 or stringer slope wrong and welder trying to correct in vertical steel plate for step ordered to open weld and reweld innumerable times.

2. I am sorry to say the drawing given by arch himself was faulty i had to check and recheck and ask for corrections.
People in profession of construction smoothly wriggle out and being a house owner you are left to correct. After a week they will appear on scene feng anger on the worker and play good cop -bad cop.

3. Used 5mm steel tubes and plates instead of given 3.5 mm in drawings still flex is there due to excellent tensile strength and elasticity of steel.

Go for conventional material for straircase for which minds of arch/engineers and workers are programmed for years.
Even if drawing is faulty mistri can catch based on hIs experience and apply /suggest corrections or of mistri is making mistake civil engineer/contractor can catch.