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Oak design values

Oak design values

Oak design values

(OP)
In evaluating existing floor joists in a 80 year old structure in Virginia, how can I accurately determine whether I have white oak, red oak or Northern Red Oak, values for which are given in the NDS supplement Table 4A?

RE: Oak design values

".. accurately...".

Take a sample to a testing agency.

Mike McCann
MMC Engineering
http://mmcengineering.tripod.com

RE: Oak design values

Most likely a mixture, as White Oak, Southern Red Oak, Northern Red Oak, Pin Oak, Scarlet Oak, and Spanish Oak (probably missed a few), are all common and commingled in Virginia. Unless for furniture making, the sawmills would not have distinguished between the oak logs as they were sawing, so I would use the lesser values.

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