Hi
I am replacing our deck stairs and I cann’t figure out how to calculate the stringer for the turn (where the two sides meet the front)
thanks for any ideas
Hi
I am replacing our deck stairs and I cann’t figure out how to calculate the stringer for the turn (where the two sides meet the front)
thanks for any ideas
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Replies
The run on your corner stringer (if your two stairs meet at a right angle) is the hypotenuse of the right triangle formed by your regular stair runs. the rise will remain the same. this can be a concern as this longer run triangle may take a big enough bite out of your stringer to require a switch to larger stock,or you could add a 2x strong back
Iron chef is right on. How many treads are there? If there are only two or three you could build stacking boxes, but you'll waste a bit more material.
Dustin
Seems like if you held your mouth right you could use the riser to support the tread above, eliminating the need for a conventional stringer in the corners.
So convenient a thing it is to be a reasonable Creature, since it enables one to find or make a Reason for everything one has a mind to do. --Benjamin Franklin
Only for the first tread, as the stairs progress down the stingers are oriented at 90 degrees and thus the distance between them increasing with each run of step. the bounce you would get at the second step? third step.... Not one I'd claim I built.
If you have a supporting post to tie into I don't see it as being an issue. I just did a deck like this and the stairs quite stout. There are two treads, then the deck. I built the first run 2 feet deep, the second 1 foot, toenailed them together and lagged them into the deck supports. I am pushing 235 and I jumped on them with no movement.
Imagine a tansu box-the base is the largest, with consecutively smaller boxes going up.
Dustin
Seems like that could be addressed with a little additional bracing.
So convenient a thing it is to be a reasonable Creature, since it enables one to find or make a Reason for everything one has a mind to do. --Benjamin Franklin
For the "hip" stringer the rise stays the same, mult. the tread of the common stringer X 1.416. This will give you the short point.
The last one I did, I cut it square then added blocking cut @ 45* to each side of the stringer. the blocking works good if you have risers on the finish.
EX. common stringer 7" rise X 10" tread
hip stringer 7" rise x 14-13/16" tread
All this info can be found in Will Holidays A Roof Cutters Secrets If I rember right he calls them pyrimid (sp?) stairs. Heres a link to buy the book.
http://www.jlconline.com/cgi-bin/jlconline.filereader?46a2b329001baf7a27177f00000105cd+EN/products/RC107
Good Luck Steve.
NAIL IT !!!
Edited 7/21/2007 9:34 pm ET by steven4077
I was at Borders in South Portland, ME today, and they had four copies of a roof cutters secrets.
I bought it about two years ago and had to order direct from Hanley! Borders seems to be stocking some other cool Hanley books as well.
Dustin