What's the most common lumber used in construction?
Lumber milled from softwood trees like spruce, fir and pine, sawn and machine-planed to standard dimensions, is the most commonly used lumber in construction.
What kind of lumber should be used in constructing a scaffold?
No. 1 grade planking is commercially available in Canada. However, due to changes in grading rules, lumber is now typically graded as No. 2 grade and better. A Canada-wide testing program showed no significant differences in strength characteristics between No. 1 and No. 2 grades. The differences between grades relate primarily to the appearance of the material.
What kind of lumber can I use for a shower seat?
Seats made of teak, mahogany, cedar, white oak and douglas fir, properly sealed, are all fine.