Equ. 4.5-1 and Equ. 4.5-2

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Bruce McC
Blackwood
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Location: Canberra ACT Australia

Equ. 4.5-1 and Equ. 4.5-2

Post by Bruce McC » Tue Sep 03, 2019 9:41 am

Hi

In the Design volume (first edition) at pg 4-58 Young's modulus along the grain is given by equation 4.5-1.
Then on page 4-59 this equation is reduced to equation 4.5-2, which contains a value of 0.94625. My question is how was this
value calculated? Using equation 4.5-1 and the average figure of 0.02 for the product VLCVCL I do not get 0.94625.

"Hard the cobbled road of knowledge to the feet of him who plods" John O'Brien - The Old Bush School.
Bruce Mc.

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Trevor Gore
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Re: Equ. 4.5-1 and Equ. 4.5-2

Post by Trevor Gore » Tue Sep 03, 2019 1:49 pm

Bruce, check out this post: viewtopic.php?f=33&t=3626#p43983 . The error is small and fixed in the second edition.

Bruce McC
Blackwood
Posts: 348
Joined: Thu Apr 07, 2011 1:29 pm
Location: Canberra ACT Australia

Re: Equ. 4.5-1 and Equ. 4.5-2

Post by Bruce McC » Tue Sep 03, 2019 4:02 pm

Thank you Trevor, will follow your sage advice and take an aspirin and lie down :roll:
Bruce Mc.

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