winder stairs.

notme76

can anyone give me some wisdom on winder stair layout? need to add a set going into a basement.

BigJim

Are you talking about full spiral stairs or stairs that make a 90° with winders? We need a little more info.

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Jim

notme76

a 90' turn...something similar to this

Attached Thumbnails

 

sixeightten

That is not code compliant. They can't come to a point like that. From the narrow side, the tread must be 9" deep at 12" in,

Joe Carola

This guy doesn't care about code. He says it on the other forum. That's why he's here.

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Joe Carola

sixeightten

Thought it sounded familiar. I answered the same way, so at least I am consistent.

notme76

that was just a pic example i found on the net, i'm looking for help in designing, laying out a set of these... at around a 36" +- width... someone must be familiar with building these they were quite poplular in older homes

Joe Carola

Everyone is familiar with them and building them to code. Problem with you is that you said on the other forum...you're not doing them to code. So why do you keep asking about them?

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notme76

3 winder stairs are code compliant where i am. so if u can help with the layout why dont you?

Joe Carola

Because on Contractor Talk forum you said code wasn't an issue and you no one agreed and wouldn't respond. Now you come here and say code is an issue because your not getting any answers.

Good luck.

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Gary in WA

R311.7.4.2 Tread depth. The minimum tread depth shall be 10 inches (254 mm). The tread depth shall be measured horizontally between the vertical planes of the foremost projection of adjacent treads and at a right angle to the tread's leading edge. The greatest tread depth within any flight of stairs shall not exceed the smallest by more than 3/8 inch (9.5 mm). Consistently shaped winders at the walkline shall be allowed within the same flight of stairs as rectangular treads and do not have to be within 3/8 inch (9.5 mm) of the rectangular tread depth.

Winder treads shall have a minimum tread depth of 10 inches (254 mm) measured between the vertical planes of the foremost projection of adjacent treads at the intersections with the walkline. Winder treads shall have a minimum tread depth of 6 inches (152mm) at any point within the clear width of the stair. Within any flight of stairs, the largest winder tread depth at the walkline shall not exceed the smallest winder tread by more than 3/8 inch (9.5 mm). From: http://publicecodes.citation.com/ico...011_par011.htm


Move around on that site with the "previous section/ next section" buttons for more info.


Gary

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Millertyme

One way to do it is frame a series of boxes on top of each other.the straight section can be framed conventionally. Find out what your rise is and do a layout on the wall first.

notme76

my total rise is 97 1/2" what i've come up with is 11 runs 12 rises at 8 1/8th a bit high maybe but i have limited head room to deal with if i go beyond 11 otreads

BigJim

If you didn't have problems with your head room it would be 13 risers at 7 1/2 inches. I don't know what your run is so I can say there other than code width of the treads.

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Jim

notme76

run is around 113" b4 i run into headroom issues.. i'm messing with different layouts for the winders, have a 36" square and a 40" square layed out now trying to figure out my best options