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helpless handyman 11-21-2006 09:59 PM

Building stair help.
 
Hi all,

I am doing a renovation on this old house I purchashed. The house was demo, and the stairs leading to the second floor are bad. I would like to get help on building a new set of stairs. I know I will probably need 2 X 12's. I need help on figuring out the riser and the steps, and the best way to cut the 2 X 12's. Thanks!

AtlanticWBConst. 11-22-2006 07:12 AM

No a simple answer to your question.

You can try looking up:

"Designing stairs and laying out stringers" at Hammerzone(dot)com.

Also, check with your local building department, to find out what your local code stipulates as to minimum and maximum for riser heights and tread widths.

helpless handyman 11-22-2006 07:46 AM

Thanks anyway, but no luck on that site!:no:

redline 11-22-2006 08:55 AM

What is to total rise? (vertical measurement from first floor to top of second floor)

What is the total run? (hortizontial measurement from where first step starts and last step ends)

Blocklayer 11-25-2006 11:15 PM

This online stair calculator might come in handy. Don't forget to check the 'Show Headroom' box
http://www.blocklayer.com/stairs/stairseng.aspx

And as AtlanticWBConst said:
check with your local building department, to find out what your local code stipulates as to minimum and maximum for riser heights and tread widths.

joasis 11-26-2006 03:33 AM

Is there a reason you are changingthe design? If you didn't, the existing stairs (stair stringers) can be duplicated. If not, the above advice is dead on, and keep in mind the comfort level of climbing stairs, which is why it is a nearly a standard to have 7 inches of rise (step) and 11 inches of run (tread).

helpless handyman 11-26-2006 05:23 PM

Thanks to all you guys, I got a rise of 110 1/2", run is 112". I am not changing the design, but changing the stairs. They are over 75 years ols, and I think they had there days. They are all wobblie and slanted. What's the best way to cut them? Circular saw and finish with a hand saw? Also what can I put on the sides of the stringer, once cut so they look nice? Thanks guys!

joasis 11-26-2006 08:13 PM

I don't think you will be happy with the calculations.....standard stairs are based on 7/11...or 7 inches of rise to 11 inches of run, as stated before. The rise and run you are quoting gives you an angle of 44 degrees or so...really steep. Is there any way you can expand the run by doing a landing anywhere? With the total rise at 9+ feet, perhaps you can get 3 steps up, turn 90 degrees left or right and continue up with a comfortable stair...see what I am getting at? Pictures of what you have would help.

helpless handyman 11-28-2006 02:55 PM

Thanks joasis,

I have some room there, not much but if I need to use, then I will have too. How much more room will I need to get a set of comfortable stairs? Thanks so much.

helpless handyman 11-28-2006 06:45 PM

Okay here we go joasis, I checked the measurements today, and it's 111 1/4 " from bottom to top, and the run is 108". I measured the steps that are there are 6 3/4 rise with a 1 inc thread, and the run is 9 1/2 inc. They are 13 steps total. All help is Greatly Appreciated. Thanks

redline 11-28-2006 07:27 PM

will this help?

http://www.inspectusa.com/calc/stair...n_stringer.htm

redline 11-28-2006 07:37 PM

Can you add one more step to the bottom?

Bonus 11-28-2006 08:13 PM

Those numbers don't work out, are you sure? What is the distance from tread surface to tread surface? How deep is the tread (from front to back), with how much overhanging the next tread (nose)?

You've got the total rise being greater than the total run but each rise is less than each run?

joasis 11-28-2006 08:19 PM

Something is wrong with the numbers, check again.....and think about it this way. The last run is the top landing. It may help if you post the exact opening of the stairway (above you), and the maximum run length, measured from the top landing vertically down (plumb), and then out to the bottom landing. Make sense? And, incluse actual headroom. If you lengthen the run without headroom, it won't help, besides being non code compliant...and building inspectors are not cool with things like that.

helpless handyman 11-30-2006 09:25 PM

Okay guys,

I went over the measurements today again, just remember these are stairs in a 75 year old home. From top of landing to bottom of landing, it measured 110 1/4 inches on subfloor to subfloor. I am going to add 3/4 inc wood floor upstairs, and I need to add 3/4 plywood plus 3/4 wood floors downstairs. Total run is 109 inches, from where stairs starts, to where stairs finish. The height of each stair is 6 3/4 inc in height, with a 1 inc thread making the total height of rise 7 3/4 inches. The treads are 9 1/2 from beginning to end including overhang. They are a total of 13 steps, these steps are not normal steps, and this is why I want to redo them. Thanks guys, all help is Greatly Appreciated.


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