huangyhg

identifying existing wood member
i have been asked to do some major renovations to an existing building. the building has a wood framed floor on steel beam girders (above a basement) and a wood trussed roof.
during my inspection of the floor i did my best to note the marks on the side of the floor joists which are as follows:
joist #1
2.5" x11.25", dfir, stand, plib, wclb
joist #2
1.5" x 11.25", wch, stand, wclb rules.
joist #1 is obvious it is a standard grade 3x12 douglas fir floor joists. i never knew they made standard grade as i have never used it before. this is not a good grade of wood.
joist #2 appears to be a standard grade 2x12 joists but what species would it be? i couldn't find any other marks on the wood joist.
the building is pretty old but not that old (if it means anything). does anyone have any insight as to what type of lumber this may be?

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the "wch" possibly stands for western cedar heartwood. will have a lower e than most other species.
let me ask a follow up question.
have the values for bending strength for standard grade lumbers stayed relatively the same over the years?
i've only dabbled in wood design here and there. the only version of the nds i have is 1997. the fb values i have for the douglas fir and western cedar
i believe the fb values have been relatively consistent, the fv values however were increased since your 1997 nds.
i'm more concerned with past years. has the lumber grades always been select structural, #1, #2, #3, stud, standard and utility with similar fb values?
alright,
back out onsite this afternoon to find that the wood grade is a mix of both construction and standard grades randomly mixed (now i have photos of the markings on the side of the wood
and some more photos
steelpe,
i suggest that you fire up google and type in "wclb". they are still very much in business with phone numbers, e-mail. etc. and can give you chapter and verse about what grade, specie and mill that produced the lumber. once you have the grade & specie you can use the allowable stresses in the current nds to evaluate the structure.
if you don't have the current nds you can access the data at the american forest & paper association's web site which is
i do plan on contacting the wclb. i am just trying to get all of "my ducks in a row" for when i call. i figured it would be easier to send them pictures of the markings on the side of the
steelpe...if the remainder of the wood looks like the photos, those appear to be undergraded...pretty nice wood...consistent, parallel grain, few knots, etc.

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