Self build shed... How hard?

[big-all]

Looking at that link @Djangobanjo shared I was a little unimpressed they appear to describe the main timbers as 2x1" or have I mis-understood? Because my chicken run is made of that!

2x1" is quite typical up to around 8x10ft above that typically 1.5x2.5"[38x63mm]
indeed tile baton size [19x38]is sometimes used on smaller structures
when you make it yourself you choose 3 or 4x2" for larger structures
on a smaller shed i would never go below 38x63

 

[Deleted member 174758]

If I built my own I would probably consider using pressure treated timber throughout... is that a waste of time?

It isn't a waste of time at all and will last longer. Just remember to get some Enseal to treat the cut ends and use decking type screws or stainless steel fuxungscif you want real durability because the treatment will attack bare, unprotected steel