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Building Basement Stairs

Bob and Riley are in the basement planning and building a new staircase. Riley explains the "rise over run" rule in designing stairs and measures the dimensions of the area. After a little math, they come up with the measurements needed to cut necessary pieces.

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Building Basement Stairs

computer-generated transcript - may not be 100% accurate

" Originally we had stairs that went from the kitchen area down -- the basement but in the wrong direction so now we've reconfigured it. And as I understand that you got a little bit of problem is. That would we've come down here hit this concrete wall with. Doesn't work so we're going to put anybody out winder yet -- with a winder to step off. The last few steps will wind around in this Iraq hi I think the first thing that we can talk about is how you determine. The that's the sizes here that the height of the -- riser of the staircase and its relationship to the -- right well the basic rule. Is that. Riser question frankly I think somewhere between seventeen and -- and it. You also want to be sure that the rise is never more than eight inches. And given off -- is that you'll probably have one more right annually -- a very important role quite. Those dimensions those ratios have to do with the safety and comfort of the staircase yeah. So let's talk about rise first you determine that in the first thing we'll need now is not total rises and that is the measurement from -- feeling. Always being either rough to rough you know from lord of the floor above -- the right you know. And we have 98 inches. He always want to measure is -- thing either from -- in the rough or from a finished Florida finished floor right but not from one to the other that'll throw you off. That's not a good round number 98. -- right so we know that we want our rise to be around seven inches so they can 98 divide it by seventy how many we have. And it comes out exactly what needs that these. Now how about the dimension from here from. The beginning of the staircase down to the end of that for the concrete as a 130. And a half inches and now we're back we will take. 38. Inches. Which is what we want -- for the platform you could have made header that's about 36 -- made it very negative you can do 38 that's better write -- Yes we have 130 and."

" Half minus the 38 inches for the platform. 92 and a half inches right now we know that out treads would like to be around ten inches so we'll divide that number of -- and telling us that we need nine treads yes so take the nine. Divide it into our run journey through there aptly enough with -- and in the water inches. Plot threads of the nine problem. Knowing that we know we have ten rises okay so the next question is how do you. Cut the stuff OK now that we'll use a framing square. What we have here is some kiln dried spruce two by twelve right. It would just got a couple of inches in from the end you always order your length an extra couple of -- that you've got room reflect on -- stair treads yes thanks guys yet. So we'll hold the a framing square one side which -- the riser is seven inches. And this side. Over here is the thread and a lot. And then just keep on going in that down -- the whole length of the."

" What do you make your first cut great have a problem church bandits burst right aligned. Right well. When we -- then. With the three quarter inch strapping. Which gets -- Right there and that'll become corporate right that's right -- right now we got to cut all the accent no. All right that's likely scenario that he wanted to go all the nonetheless that a -- all right we're almost there now what I want to review is. How we built the winder as it's called down here OK well Lewis's day you have. Square platform that we that it on the bottom the bottom here which is a ninety degree angle. We know we want that divided into three equal so basically it's a thirty degree thirty degree. They'd agree so that you've built three additional boxes went on top of the just stacked one on top job that's all there is doing with that great now nice job."

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