Identify timber

[Helvetica]

My dad had these planks in his shed but he doesn’t remember where he got them, would anyone know what they are? They are roughly 8x4” and 9’ long. Not particularly heavy for their size. I’m thinking pressure treated but can you tell from the markings?


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[memzey]

Look like pressure treated fence posts.

 

[Beau]

They may be treated or they my just be well weathered. Looking at the piece on the floor the there is a surprising amount of the redness showing for a treated wood. You would soon know if planed a bit as the treatment would penetrate a bit. Wouldn't bet my life on it but I would say it's douglas fir.

 

[thetyreman]

I'd say some kind of low grade fast growth pine, the one on the top layer, the beam beneath that looks more like douglas fir

 

[Suffolkboy]

Doug fir or maybe Larch heartwood.