Stair stringer questions

[isuhunter]

My dad and I are working on a deck build and I've come to the point of framing my stairs. I want a comfortable step as there will be ~14ish steps. I thought there would be now better crew than this to get advice on cutting my stringers...

Considerations:
3/4" toe kick, 3/8" gap, 5 1/2" trex, 3/8" gap, 5 1/2" trex (with 1/2" overhang) should give me a total tread depth of 12"

I'd appreciate any feedback

 

[wrenchguy]

With those gaps and overhang your carriage cut should be 11 1/4". Forget toekick, it'll cancel out every rise on its own. Sketch it out.

 

[isuhunter]

With those gaps and overhang your carriage cut should be 11 1/4". Forget toekick, it'll cancel out every rise on its own. Sketch it out.

Even when wanting to run the toe kick all the way down so there is a gap for water?

 

[wrenchguy]

Yes, Your tread board and gap total is 11 3/4. right? You want a 1/2 overhang. right? Your gonna put a riser board on every rise cut. right? Sketch it out.

 

[isuhunter]

Yes, Your tread board and gap total is 11 3/4. right? You want a 1/2 overhang. right? Your gonna put a riser board on every rise cut. right? Sketch it out.

THANK YOU! Sketching was key!

 

[Skiff Builder]

Plug your numbers into this calculator to check your work. With trex, I space stringers no more than 12"oc, especially on long runs.
Do you plan on a good footer for the strigers?


http://https://www.blocklayer.com/stairs/stairseng.aspx

 

[isuhunter]

Plug your numbers into this calculator to check your work. With trex, I space stringers no more than 12"oc, especially on long runs.
Do you plan on a good footer for the strigers?


http://https://www.blocklayer.com/stairs/stairseng.aspx

Trex recommends 9" I'm thinking I'll stick with 9"

I plan on pouring a small pad with footings.

 

[firebirdparts]

Looks like you're well on your way. Nice calculator. I guess the tricky part is getting the top and bottom steps the same height as the rest. The rise on the bottom one is short.

Sometimes I don't like how people cut the stringer off at the top stringer step. This is okay as you have it sketched, but sometimes people do it in a way that's really not okay, and it's not necessary. You can let it run on up under the deck if there's anything up in there to attach to. As it is, I guess you'll be lucky to find lumber long enough to do the minimum.

 

[wrenchguy]

Use LVL's, after cutting/fitting use 2 coats wood penetrating epoxy on all surfaces. "Last long time", and expensive.

 

[Skiff Builder]

Originally Posted by Skiff Builder View Post
Plug your numbers into this calculator to check your work. With trex, I space stringers no more than 12"oc, especially on long runs.
Do you plan on a good footer for the stringers?

Trex recommends 9" I'm thinking I'll stick with 9"

I plan on pouring a small pad with footings.

Wow 9" oc stringers- gotta go with what they tell you. How wide are the stairs to be? You'll get a good workout with the saw on all those. You must be using Select ,Escape, or Enhanced with the scalloped bottom?

Are you placing intermediate posts and girders under stringers?
Enjoy your build.

 

[K'ledgeBldr]

Start at page 20-

https://awc.org/pdf/codes-standards/publications/dca/AWC-DCA62015-DeckGuide-1804.pdf

If you're going to do it- do it right the first time!

 

[The Cobbler]

I agree the blocklayer.com stair calculator is great .

 

[rburke65]

I have seen 12” joists and trex decking......you can still see the bowed decking with the summer heat.

 

[Viper98912]

Are you getting permits for this build? If yes, check your permit requirements first! You may find that your local government entity issuing the permit has specifics for depth of run (where you step) and the amount of rise - I know mine did

 

[safnd2021]

Are you getting permits for this build? If yes, check your permit requirements first! You may find that your local government entity issuing the permit has specifics for depth of run (where you step) and the amount of rise - I know mine did

 

[Corrsa]

My dad and I are working on a deck build and I've come to the point of framing my stairs. I want a comfortable step as there will be ~14ish steps. I thought there would be now better crew than this to get advice on cutting my stringers...

Considerations:
3/4" toe kick, 3/8" gap, 5 1/2" trex, 3/8" gap, 5 1/2" trex (with 1/2" overhang) should give me a total tread depth of 12"

I'd appreciate any feedback

Have the same problem right now. The attached image in your message is very small, I can hardly see the numbers, but you can put your sizes in this calculator https://concalculator.com/stair-calculator/ and it will show a simple drawings with all the sizes. Check the attachment