Outdoor stairs

[neddy]

Hi all.........have got to make outdoor stairs to a raised deck (2.1m off ground). I intend to make stringers and treads from TP 245x45. I've worked out the rise/going preportions from Allan Staines deck & pergola book but I need to know seeing as the stringer length will be 3.3m do I need an intermediate post between the top & bottom to support the staircase? The width of the stairs will be 900mm so do I need a middle stringer to support the tread? Also I've decided to use battens (TP 70x45) bolted to the stringers to bolt the treads onto.....is this as good a method as housing the treads into the stringers? Or is it just "a looks" thing because it seems like a lot less work. Thanks everyone.

[Sturdee]

as the stringer length will be 3.3m do I need an intermediate post between the top & bottom to support the staircase?

There are none on mine.


The width of the stairs will be 900mm so do I need a middle stringer to support the tread?

No.



Also I've decided to use battens (TP 70x45) bolted to the stringers to bolt the treads onto.....is this as good a method as housing the treads into the stringers? Or is it just "a looks" thing because it seems like a lot less work.

So did I when I replaced the treads as it was a lot simpler on an existing stairway. But I would still use the threaded rods to tie the risers together.



Peter.