What is wrot/unwrot timber?

Question

Hi...

I am working on some architectural drawings and when choosing the correct way to represent timber, for example a timber kit section, I find that there are two principle types of timber it seems - wrot and unwrot timber.

Can anyone explain what each type is and the difference between them to me?

Thanks in advance.

Answer 1

"Wrot" timber is timber that has been planed or machined in some way. (abbreviation of "wrought")
"Unwrot" timber has only been sawn to size (abbreviation of "unwrought")

Answer 2

Wrought timber is sawn timber that's then planed on one or more surfaces.

"Dressed (Surfaced) Timber. Sawn timber planed on one or more surfaces; also known as Wrought timber; D4S - dressed four sides, i.e. on two faces and two edges; D3S - dressed three sides, i.e. on two faces and one edge; D2S - dressed two sides, i.e. on two faces only; DIS - dressed one side, i.e. on one face only "