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Diaphragm Calculations[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: seaint(--nospam--at)seaint.org
- Subject: Diaphragm Calculations
- From: SThompsonB(--nospam--at)aol.com
- Date: Thu, 8 Jul 1999 10:35:21 EDT
Dennis Wish had comments on these items: Regarding "G" values for OSB: Testing of shear walls has indicated that the G values are slightly higher in OSB than in plywood but not enough to warrant the use of different values. Use Plywood values. Regarding the E value of 1,700,000 psi: I hope that you are not specifying "stud" grade lumber for chords. Regarding the diaphragm span "L" being in feet: The seminar notes are CORRECT in using FEET for the diaphragm span. Refer to the equation definitions on page 3-41 of Vol 3 of 1997 UBC. There is however an ERROR in the UBC in units for metric conversion. The diaphragm width "b" should be M not mm and the diaphragm length "L" should be in M not mm. Regarding the 0.188 number in the third part of the equation: The number is a constant and not related to units. Dennis: you need to lighten up on your personal attacks. Doug Thompson S.E.
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