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Old 08-03-2009, 01:58 PM   #1
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Adding Stairs To A Deck


We currently have a deck that needs the stairs replaced. there is one stair at each of the of the deck and it is 48 inches wide. the heigth of the deck is 16 inches. I went to my local hardware store and discovered the pre cut risers. I am guessing that I would just cut the riser to fit. However, I am unsure as to how to attach it to the deck. are there brackets that i can use and how many risers will i need for a stair of that width?

WBNC

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Old 08-03-2009, 02:02 PM   #2
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Adding Stairs To A Deck


Do you have a picture of the existing stairs?

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Old 08-03-2009, 02:08 PM   #3
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Old 08-03-2009, 02:12 PM   #4
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Adding Stairs To A Deck


Well that's interesting

If the distance to the top of the deck is 16" then you really only need one step
Split the distance in 1/2
So the top of the step should be 1/2 to the deck
Then the ground is the last step
I'm not sure I'd even buy stringers for this

Just build a box frame
Use a metal angle "L" bracket to attach the box to the deck
Then put the top of step on to cover the top of the box
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Old 08-03-2009, 02:16 PM   #5
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Adding Stairs To A Deck


not sure if my wife would like the look of a box frame...

LOL!!!
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Old 08-03-2009, 02:19 PM   #6
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Adding Stairs To A Deck


The box frame will look just like a step once the top pieces are on

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Old 08-03-2009, 02:25 PM   #7
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Adding Stairs To A Deck


ok

now i see where you are going with this. and if the concrete is not level, i would just shim it up?
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Old 08-03-2009, 02:34 PM   #8
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Adding Stairs To A Deck


If the top of the step needs to be at 8"
Subtract the height of the step "decking"
That is what you need for the box frame
I actually use the heavy duty PT thick stairs 1.25" thick
One piece instead of 2 pieces

If you use 2x8 PT you could cut the frame at a slight angle to correct the concrete
Or use 2x10 PT & cut down if a bad angle

Shimming might be a little unstable

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Old 08-03-2009, 02:40 PM   #9
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ok

so at this point my frame would be 8 inches high, 48 inches wide and standard stair depth so about 12 inches?
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Old 08-03-2009, 02:48 PM   #10
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Adding Stairs To A Deck


The single piece step I use is 10" front to back, so the frame would be 9.25" wide
If using the reg decking then it would be around 11.5", so about 10.75" wide for the frame
You want about a 3/4" overhang on the front of the step
You also want support pieces inside the box to support ther steps
Either one in the very middle for the thick single step
or 2 spaced apart - 16" & 32" to support reg decking pieces as stairs
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Old 08-03-2009, 02:52 PM   #11
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ok

we will give that a shot and see how it goes....

thanks

WNBC

if you get a chance, look at my sealing cedar siding thread...

Last edited by WBNC; 08-03-2009 at 03:11 PM.
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Old 08-03-2009, 03:55 PM   #12
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Adding Stairs To A Deck


one more thing

since the height of the box will be 8 inches, that will bring it to roughly the bottom of the boards on the side of the deck. i would like to attach this to the bigger of the two boards shown in the photo. you mentioned L bracket. can you explain how i would do this?
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Old 08-03-2009, 04:41 PM   #13
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Adding Stairs To A Deck


I use simpson strong tie brackets - galvy to last
Screw it into the existing deck board 1st
--upside down orientation from this picture
The box should just slide under the piece sticking out
Then screw the barcket into the top of the box frame
I'd use one every 16"

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Old 08-03-2009, 04:56 PM   #14
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sweet!

thanks
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Old 08-03-2009, 10:40 PM   #15
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Adding Stairs To A Deck


I don't mean to be a code-spewing funsucker here, but with a 16" total rise you need three rises. 7-3/4" is the max nowadays, so two 8-inchers won't get it.

That being said, what was there before was abhorrent and anything is an improvement!

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