Can I use treated pine sleeper as pergola posts?

[andrewlxy]

I have some 2.4mt 150mm X 100mm treated pine sleeper left over from previous project.

Can I use these treated pine sleeper as pergola posts? are these sleeper strong enough?

Or can I screw two sleepers together as one post?

Thanks!!!

[artme]

G'day Andrew and welcome aboard'

Treated pine that size is plenty strong enough for posts. Most posts for your purpose are 100mm square.

I takeit you are mounting the posts in stirrups.

[Ozkaban]

They'd be strong enough, but I'd be worried about how much they move over time. the last lot of sleepers I bought had some *very* wet ones in there, and they warped a fair bit on drying. The ones that were bolted together (I made a flight of stairs out of them) didn't move too much.

Cheers,
Dave

[andrewlxy]

artme and Dave,

thank you for your replies, I have much better idea right now.!

[Drewy90]

I have some 2.4mt 150mm X 100mm treated pine sleeper left over from previous project.

Can I use these treated pine sleeper as pergola posts? are these sleeper strong enough?

Or can I screw two sleepers together as one post?

Thanks!!!

Just beware that trated pine sleepers are not a stress graded structural timber. They are likely to have defects such as large knots, sloping grain and other defects that create weaknesses.