Quality of timber

[Jeffers_S13]

Bought a load of timber offline to build a roof on my workshop project. It was delivered by a local supplier. I’d like to know if what was delivered would be considered acceptable. It is all under size by Class 2 specs I found online. Some of it would appear to have been sat outside for some time and many of them are warped and have splits. Maybe this is ‘normal’! These days. Feel like they’ve used the opportunity to empty their yard of all the stuff their regular trade customers have picked over.

See pics below

This is supposed to be 2x7 (47x175)

 

[Wayners]

You should always go look at wood before you buy if you don't have a good relationship with supplier.

Also planed timber with a nominal size of 47x175mm typically has a finished, actual size of 45x170mm. This is because the planning process. Yours looks a little under. You need to ask what the actual size is

If you don't like wood send it back

 

[Ollyfp]

Some suppliers state '70% perfect' (or something like that) on the invoice, which basically means that you're going to get 3 bananas in every 10.
It's worth hand-picking for a small project, but I always end up using the seconds for noggins etc on larger jobs.

 

[big-all]

7x2 is the preworked stock size if its quoted in inches you need to reduce the size the machining will take off rough guide 1"= 21.5mm 2"=43mm 3"=69mm 4"=94mm 5" =119mm 6"=143mm 7"169mm

you should always ask "what is the actual size"

you should always measure the actual size a few inches from the ends as badly suported timber at the end off cut or plaining can drop a few mm as it drops off a roller or support

as an aside iff its quoted just in metric it will tend to be actual size