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LBS to MPa and GPa

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  • LBS to MPa and GPa

    Hi there,

    I'm new to this site, so I hope, someone can help me with the following problem I have.

    Educated in old metric units, I have difficultly in converting the following numbers into MPa/GPa.

    Flatwise Stiffness 55,600 lbf-in.2/ft = ............... GPa
    Flatwise Strength 1,040 lbf-in./ft = .................. MPa

    It concerns the strength and stiffness properties of OSB.

    Appreciate your help.

    Antoon Eggenhuizen

    The document can be downloaded from the APA Website: APA - PR-N614 (Tolko SIP facers)

    Last edited by CMAX; 02-09-2020, 05:59 AM.

  • #2
    Originally posted by CMAX View Post
    Hi there,

    I'm new to this site, so I hope, someone can help me with the following problem I have.

    Educated in old metric units, I have difficultly in converting the following numbers into MPa/GPa.

    Flatwise Stiffness 55,600 lbf-in.2/ft = ............... GPa
    Flatwise Strength 1,040 lbf-in./ft = .................. MPa

    It concerns the strength and stiffness properties of OSB.

    Appreciate your help.

    Antoon Eggenhuizen

    The document can be downloaded from the APA Website: APA - PR-N614 (Tolko SIP facers)
    At least in the version I downloaded, SI conversion factors are given immediately under the table. Simply multiply the Customary values by these conversions.
    I tried to copy and paste the footnote, but the document is protected.

    I don't know enough about the subject to know how these values are measured or applied to design; however the SI units given for the two conversion factors are
    kNm/m and kNm/m, I do not see a useful way to express them using pascals (with any prefix) as 1 Pa = 1 N/m. Doing so makes the numerator messier.

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