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Long PT Stringers Rory 05-08-2009
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Posted by Rory on May 8, 2009, 9:45 pm
Planning on building a set of outdoor stairs at a cottage that will have a
total rise of somewhere between 12 to 15 feet along a steep slope. (Total
rise from the cottage to the water is over 40 feet with a combination of
ramps and stairs.)

The stairs will be approximately 40 inches wide with open risers and 3
notched stringers.

The stringers will likely be over 20 feet, so I am thinking I would glue up
(Gorilla glue?) a stringer that is a PT 2 x 4 and 2 x 8 edge joined (16
footer and 8 footer). The stringers would have a scarf joints at opposite
ends and the 2 x 4 would be on the bottom side of the stringer. (The 2 x 8
would be notched for treads).

I can provide midspan support from underneath.

Other ways of doing this?

Thanks



Posted by RicodJour on May 8, 2009, 10:12 pm
> Planning on building a set of outdoor stairs at a cottage that will have =
a
> total rise of somewhere between 12 to 15 feet along a steep slope. (Total
> rise from the cottage to the water is over 40 feet with a combination of
> ramps and stairs.)
> The stairs will be approximately 40 inches wide with open risers and 3
> notched stringers.
> The stringers will likely be over 20 feet, so I am thinking I would glue =
up
> (Gorilla glue?) a stringer that is a PT 2 x 4 and 2 x 8 edge joined (16
> footer and 8 footer). The stringers would have a scarf joints at opposite
> ends and the 2 x 4 would be on =A0the bottom side of the stringer. (The 2=
x 8
> would be notched for treads).
> I can provide midspan support from underneath.
> Other ways of doing this?

If you can support the run somewhere in the middle, the stringers
don't have to be continuous.

You should consider breaking up such a long flight into two sections
with a landing in between. Every single person who uses the stair
will appreciate it. Landings give people a place to rest (built-in
benches on either side of a landing with a view is particularly nice),
provide a place to arrest a fall, and some codes limit the height of
an unbroken run of stairs.

R

Posted by on May 9, 2009, 8:41 am
> > Planning on building a set of outdoor stairs at a cottage that will hav=
e a
> > total rise of somewhere between 12 to 15 feet along a steep slope. (Tot=
al
> > rise from the cottage to the water is over 40 feet with a combination o=
f
> > ramps and stairs.)
> > The stairs will be approximately 40 inches wide with open risers and 3
> > notched stringers.
> > The stringers will likely be over 20 feet, so I am thinking I would glu=
e up
> > (Gorilla glue?) a stringer that is a PT 2 x 4 and 2 x 8 edge joined (16
> > footer and 8 footer). The stringers would have a scarf joints at opposi=
te
> > ends and the 2 x 4 would be on =A0the bottom side of the stringer. (The=
2 x 8
> > would be notched for treads).
> > I can provide midspan support from underneath.
> > Other ways of doing this?
> If you can support the run somewhere in the middle, the stringers
> don't have to be continuous.
> You should consider breaking up such a long flight into two sections
> with a landing in between. =A0Every single person who uses the stair
> will appreciate it. =A0Landings give people a place to rest (built-in
> benches on either side of a landing with a view is particularly nice),
> provide a place to arrest a fall, and some codes limit the height of
> an unbroken run of stairs.
> R

A place to sit and rest the inevitable cooler would be good.
T

Posted by Craig M on May 9, 2009, 2:12 pm
I have to agree, landings are a good way to break it up, as the knees get
older them stairs get longer and longer
> Planning on building a set of outdoor stairs at a cottage that will have a
> total rise of somewhere between 12 to 15 feet along a steep slope. (Total
> rise from the cottage to the water is over 40 feet with a combination of
> ramps and stairs.)
> The stairs will be approximately 40 inches wide with open risers and 3
> notched stringers.
> The stringers will likely be over 20 feet, so I am thinking I would glue
> up
> (Gorilla glue?) a stringer that is a PT 2 x 4 and 2 x 8 edge joined (16
> footer and 8 footer). The stringers would have a scarf joints at opposite
> ends and the 2 x 4 would be on the bottom side of the stringer. (The 2 x 8
> would be notched for treads).
> I can provide midspan support from underneath.
> Other ways of doing this?

If you can support the run somewhere in the middle, the stringers
don't have to be continuous.

You should consider breaking up such a long flight into two sections
with a landing in between. Every single person who uses the stair
will appreciate it. Landings give people a place to rest (built-in
benches on either side of a landing with a view is particularly nice),
provide a place to arrest a fall, and some codes limit the height of
an unbroken run of stairs.

R



Posted by Rory on May 10, 2009, 9:36 pm
Yes, I know a landing will help make it easier to navigate and a rest is a
good idea. I am 58 and my knees are shot - but we are talking about a long
rise (40 to 50 feet) with a combination of stairs and ramps to the water. So
I am simply trying to come up with something that fits the location - not a
page out of a building code.


>I have to agree, landings are a good way to break it up, as the knees get
>older them stairs get longer and longer
>> Planning on building a set of outdoor stairs at a cottage that will have
>> a
>> total rise of somewhere between 12 to 15 feet along a steep slope. (Total
>> rise from the cottage to the water is over 40 feet with a combination of
>> ramps and stairs.)
>> The stairs will be approximately 40 inches wide with open risers and 3
>> notched stringers.
>> The stringers will likely be over 20 feet, so I am thinking I would glue
>> up
>> (Gorilla glue?) a stringer that is a PT 2 x 4 and 2 x 8 edge joined (16
>> footer and 8 footer). The stringers would have a scarf joints at opposite
>> ends and the 2 x 4 would be on the bottom side of the stringer. (The 2 x
>> 8
>> would be notched for treads).
>> I can provide midspan support from underneath.
>> Other ways of doing this?
> If you can support the run somewhere in the middle, the stringers
> don't have to be continuous.
> You should consider breaking up such a long flight into two sections
> with a landing in between. Every single person who uses the stair
> will appreciate it. Landings give people a place to rest (built-in
> benches on either side of a landing with a view is particularly nice),
> provide a place to arrest a fall, and some codes limit the height of
> an unbroken run of stairs.
> R
>



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