Deck floor down

[Autotech]

M180 or any one else give me a idea on how to find 33 degree angle for stairs. This is my first rodeo so don't get to technical.Hope to have steps built before school starts back.

 

[captmello]

Re: Deck floor down

You don't need an angle to do the stairs, You just need to calculate your height, and divide the height by the number of rises you'll have in your staircase.

eg.

Height = 100"
number of rises = 14
calculated rise height = 100/14=7.3"

Maximum rise height by code is 7.75"
Minimum tread size is 10"

Your tread size is whatever you want it to be. I usually cut mine @ 10.5" This allows for two 2x6's or 5/4 decking pieces per step with a little overhang.

Your staircase will be tricky to figure so take your time. Measure twice...

Hope that helps.

 

[sasto]

Re: Deck floor down

I bought step risers at HD, already to go.

 

[45Auto]

Re: Deck floor down

If you really need exactly 33 degrees, you can use trigonometry to figure it out. Opposite side divided by adjacent side is the tangent of the angle.

Bottom line is multiply the desired height by 1.54 to get the length of the horizontal run.

 

[Autotech]

Re: Deck floor down

Cmello
i am thinking i will have two(2) landings one 9 '. From deck floor and one 8' below that with about 5 or 6ft to the ground. So ease of accension is important to me. Not getting any younger:d. Every thing i've read says 33 degrees with 7.25 riser is most comfortable. Will build landings tommorrow and start on steps after that. Never built anything with this many steps before. Thanks for the help.
here is pic from the ground.

 

[captmello]

Re: Deck floor down

Having the landings makes it easier to figure the stringers.

The stair can dictate where the landings are positioned even though you build the landings first. And it gives you some "fudge room"

7.25" rise/ 15 rises = 108.75 (9.06")

I would build my landings equal distances or in multiples of 7.25 so that the rise height is consistent throughout.

You need to be in increments of 7.25". Otherwise you end up with a short or long step at the top or bottom of each set of steps.

I would build the first two landings each 108.75 inches lower than the preceeding landing, and then with the final set of steps, you can adjust the bottom later with landscaping etc.

10.5" treads * 14 treads = 147"

You have one less tread than rises because the last rise is up to the main level. So for calculating the distance out from the main level you get 147", however you want to tuck the landing in under the steps so I would give 16 to 20 inches of overlap for the stringers to rest on.

This would put the landing roughly 127" - 131" out from the face of the main level. If you go with a larger tread these numbers will change.

Draw it out if it helps. Remember the top step is up onto the deck so the top of the stringer will come in 7.25' + tread board thickness below your deck. I assume your using treated 2x12's for stringers?

 

[captmello]

Re: Deck floor down

I just happen to be cutting stringers on friday Here's some pics of the stairs and stringer cutoffs.

I tape the measurements on my square to make it easier to reposition

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These steps are made to take 3 2x6s for about 16.5 tread depth and are over 6 feet wide, but its the same idea. I'm not sure why I didn't get a finished pic. I guess I just wanted to get out of there and get on my boat, which I did.

 

[Autotech]

Re: Deck floor down

Capmello
108.75 is what I needed from landing to landing didn't know how to figure it out. I will still have some room to play to the ground because that will be concrete later in the build. Will get back to you later on that. Yep using 2x12x16 treated on the stringers with 5/4 decking as steps. I'm in way over my head but thanks to iboats folks I just keep on kicking to keep my head out out the water. Tape on square is a cool trick to never seen that before. I've learned every trade has its tricks to make life easier.

 

[captmello]

Re: Deck floor down

Tape on square is a cool trick to never seen that before. I've learned every trade has its tricks to make life easier.

Just makin' it up as I go.

Looks like a fun project. What are the dimensions of your building?

 

[marlboro180]

Re: Deck floor down

Auto-

7.25 x 11 ( rise over run) is really just a good guide. It is not a code requirement. That is really just considered to be an architecturally correct step, as it is a comfortable one.

Check out this for a good read, it will tell you a lot more than I can convey to you in words.....http://docs.google.com/viewer?a=v&q...PeGOVb&sig=AHIEtbR0YY39ASIfAoV4PTi-UW8OHZonBQ

another link,stair calculator for the noobs:
http://www.ez-stairs.com/stair_calculator/

The tape idea on the framing square is a good one, but have you tried these??http://209.18.78.11/imgs/OR01/OR01-

OR01-6245179_xl.jpg?hei=248&wid=248&op_sharpen=1&resMode=sharp&op_usm=0.9,0.5,0,0

http://www.sears.com/shc/s/p_10153_12605_SPM215330455P?prdNo=14

Marlboro

P.S. 108.75 equals 7.76 rise., giving you 14 steps.

 

[TiredoleBoy]

Re: Deck floor down

One more thing to add, I like to take a small section of wood and clamp it to the square. Line it up with the measurements on the square and then this acts as a guide to just place on the wood and mark the rise and run.

 

[captmello]

Re: Deck floor down

Auto-

7.25 x 11 ( rise over run) is really just a good guide. It is not a code requirement. That is really just considered to be an architecturally correct step, as it is a comfortable one.

Check out this for a good read, it will tell you a lot more than I can convey to you in words.....http://docs.google.com/viewer?a=v&q...PeGOVb&sig=AHIEtbR0YY39ASIfAoV4PTi-UW8OHZonBQ

another link,stair calculator for the noobs:
http://www.ez-stairs.com/stair_calculator/

The tape idea on the framing square is a good one, but have you tried these??http://209.18.78.11/imgs/OR01/OR01-

OR01-6245179_xl.jpg?hei=248&wid=248&op_sharpen=1&resMode=sharp&op_usm=0.9,0.5,0,0

http://www.sears.com/shc/s/p_10153_12605_SPM215330455P?prdNo=14

Marlboro

P.S. 108.75 equals 7.76 rise., giving you 14 steps.

There are 15 rises in that 108.75 which is 7.25 per rise. 14 steps in the stringer, is correct.

I use the 10.5 size because it takes two deck boards or two 2x6's just right, not because it's required. In fact I would consider a wider tread for such a large staircase. Maybe go out and try some different sets of steps, bring your tape measure.

The steps I was building last week where cut to a 16" tread. Took three 2x6s and walks very nice.

 

[Autotech]

Re: Deck floor down

I dont think I like this this but its what I got.

Think I need at least 8' between steps and top plate on deck so tall folks won't bump a noggin: best I can get is 6'7". Marked a 2x4 with steps and nailed it up just to check man that sucker is steep closer to 40 degrees than the 33 I was looking for. Built a landing squared it up and dont think I will need a second landing. Lower 2X4 on the ground level is more like the incline I wanted. any suggestions or is this what I have to live with..

 

[Autotech]

Re: Deck floor down

Just makin' it up as I go.

Looks like a fun project. What are the dimensions of your building?

40 x 24 on main level and 12X32 on porch and 12X32 on deck .Wanted a bigger porch but money weeeelll you know the rest of the story.

 

[captmello]

Re: Deck floor down

I dont think I like this this but its what I got.

Think I need at least 8' between steps and top plate on deck so tall folks won't bump a noggin: best I can get is 6'7". Marked a 2x4 with steps and nailed it up just to check man that sucker is steep closer to 40 degrees than the 33 I was looking for. Built a landing squared it up and dont think I will need a second landing. Lower 2X4 on the ground level is more like the incline I wanted. any suggestions or is this what I have to live with..

Only thing to do is lengthen the tread, but I see you're running out of room at the top. One inch of tread length equals 14 inches in overall length. 28 inches for two more inches of tread, 2x6 and a 2x8.

If your really not sure, go walk some steps and see what you're comfortable with.

I would also not change the dimensions from one set of step to the other. Keep it all the same. You get in a rhythm going up and down stairs.

 

[marlboro180]

Re: Deck floor down

Auto-

Can you move the upper part of the stringer to the left one more joist cavity? That will leesen yer slope just a bit, and give you a bit more head clearance. You need to have 6 foot eight head clearance minimum, measured from the tread noses ( draw a line along the treads, ) in a vertical line perpendicular to the treads. Clear as mud? - think a big T- square, set on the treads....then up at an angle back, 6 foot eight on the backside of the slope, up towards yer joists above...

 

[Autotech]

Re: Deck floor down

Ok how does this look for a rookie carpenter. had to use 7.25X10 on to make the steps come out right. Tomorrow is the real head banger. Going from landing to Deck.

 

[marlboro180]

Re: Deck floor down

Looking good there!

You may want to make sure you have a good connection where the stringers attach to the deck. I can kinda see the connection you made there, kinda looks like it is just screwed into the side of the joists , which in a long run like that, may not suffice in the long term. A suggestion - If you cannot get any of the simpson hangers in there, you could add a kicker (a couple 2 x 6s) strung between the poles, bearing the stringers on that as well. - Maybe I missed em in the photo though....

When you cut the stringers for the upper set, dont forget to discount the thickness of the tread on the bottom step!

You are doing fine- Sure gonna feel different to just walk up to the main floor though ! I know that always feels like a turning point when putting a house together. No more needing the lift and ladders to get up there... sweet!

Here is my head scratcher- gotta finish the balusters and handrails on this in Sept.- all steel. I hope I can, otherwise Mrs M is gonna keel me. just thought Id share....

 

[captmello]

Re: Deck floor down

Lookin' good.

 

[Autotech]

Re: Deck floor down

M180 those stairs make mine look like Ned in the first grade. Bet that did take some head scratching. Looks good though.
Thanks for your and Captmellos help Ive come a long way since. This

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