Can someone help me calculate 2x4 weight please?

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Forum topic by FancyShoes posted 09-10-2016 10:46 PM 210 views 0 times favorited 3 replies Add to Favorites Watch
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504 posts in 787 days

09-10-2016 10:46 PM

Thanks for the help!

I build a lumber rack to get my lumber off the floor. I went 20” long then added a brace, about 47 degree angle down to the studs. And have them supirted by the 1.5” piece at the stud as well. I have them ever other stud, so that is 32” on center apart.

I want the lumber off the floor so I am trying by experiment.. I really dont want to walk out to them on the floor once again.

3 replies so far

View dawsonbob's profile


1841 posts in 1178 days

#1 posted 09-10-2016 11:03 PM

View Gene Howe's profile

Gene Howe

8106 posts in 2851 days

#2 posted 09-10-2016 11:27 PM

My racks are like yours and mounted almost the same way. Every other one has a pocket screw on each side, into the stud. Mine are loaded way heavier than yours and have never failed.

-- Gene 'The true soldier fights not because he hates what is in front of him, but because he loves what is behind him.' G. K. Chesterton

View MadMark's profile


970 posts in 875 days

#3 posted 09-10-2016 11:37 PM

The USDA ‘Wood handbook – wood as an engineering material’ says ‘it depends’ on the moisture % – which changes over time. Pine density is around 0.32-0.52 depending on overdry from green.

Estimate the bf, divide by 12 for cu foot and multiply cu ft by 62.42796 lbs / cu ft for max weight if wood is 100% water. Divide by two for greenwood or three for overdry pine. Other species will have different values.

Sorry, sometimes simple problems aren’t.


-- Madmark -

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