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  1. jaypartain

    Rafter connection

    After reading all of these posts at one time, dhengr's stands out to me as requiring the least material, least labor, and least modification to the existing structure. One add on to this is could you somehow use the existing columns (cut off near the top) in the attachment to the cross beams...
  2. jaypartain

    Anchor Spacing for Wood Stud Walls subject to Lateral/Uplift Loading

    If you review Section 4.4.1.6 Item 2 you will find how the SDPWS acounts for this rotation. I would use this as a starting point for accounting for rotation of the sill plate. Jason A. Partain, P.E. www.myconstructionfinds.blogspot.com
  3. jaypartain

    Anchor Spacing for Wood Stud Walls subject to Lateral/Uplift Loading

    If you use hurricane ties to transfer the uplift into the bottom plate you still have to transfer that load into the foundation. You would be required to design the sill plate for this load. Instead of leaving this up to the Engineer, the SDPWS just prescribes anchor bolts at 16" o.c. Jason...
  4. jaypartain

    Repair 7"x14" parallam beam that has been notched on the tension side?

    As Mike stated, I would first run the analysis with the reduced section to determine if the beam needs reinforced. Make sure you account for any overcut when determining the depth of the member. If it needs to be reinforced, check with the supplier or manufacturer as stated by 4thorns. I...
  5. jaypartain

    Conventional Residential Wood Framing in High Wind Zones

    The ICC manual includes design information for wood and other materials and references the WFCM for anything other than wind loads. I would download the WFCM guide for the specific wind speed that you need. Jason A. Partain, P.E. www.myconstructionfinds.blogspot.com
  6. jaypartain

    Structural data for wood in wood frame building

    The American Wood Council and Southern Pine council have free downloadable guides to get you familiar with the design and details. Also, a discontinued textbook by Hoyle and Woeste has a chapter on this type of design. The Wood Handbook may have something. It is available as a free download...
  7. jaypartain

    Repetitive Member factor in built up girders

    spats and IceNine, The repetitive member factor is used to adjust the allowable design stress for the member you are designing. The allowable design stresses for wood are based on the 95th percentile of actual load capacity. So for every 100 joists loaded, 95 will have an actual strength...
  8. jaypartain

    Nailing Requirements of Facia

    You mentioned spacing in your post. Is this nail spacing? For a continuous fascia, I would expect limited height for nailing and specify the # of nails per rafter/truss. The method for calculation mentioned is good. I would also consider a man load centered between the supports. Jason...
  9. jaypartain

    Shear wall to sole plate connection distress

    Like Mike stated, the connection is critical. I agree with adding sheathing on the interior face of the wall. I would add full depth blocking between the studs at some elevation and attach the new sheathing to it. Jason A. Partain, P.E. www.myconstructionfinds.blogspot.com
  10. jaypartain

    Repetitive Member factor in built up girders

    There is an ASTM for repetitive member wood assemblies (ASTM D6555). I have not read it, but I think it is more expansive than the NDS description. Jason A. Partain, P.E. www.myconstructionfinds.blogspot.com
  11. jaypartain

    Type 3 Construction with Wood walls

    I would recommend that you contact someone with WoodWorks at www.WoodWorks.org They offer free consulting for stuff like this. They also have design examples fir wood frame construction on steel lower levels. Jason A. Partain, P.E. www.myconstructionfinds.blogspot.com
  12. jaypartain

    Plywood vs OSB

    As an aside, I would not use T&G plywood for anything but a floor. APA recommends using a 1/8" gap between panel edges for a roof, which is usually achieved through the use of ply-clips. This allows for expansion of the wood panel. Jason A. Partain, P.E. www.myconstructionfinds.blogspot.com
  13. jaypartain

    Grade of existing lumber unknown.

    There is and ASTM that covers visual grading of existing lumber. I think it is ASTM D245. Jason A. Partain, P.E. www.myconstructionfinds.blogspot.com
  14. jaypartain

    Serving on a Technical Committee

    Another option is to volunteer for work with your state SEA. This is a good way to get organizational work experience, meet fellow engineers in your state, and get your feet wet working with others. Also, this limits your travel needs, which is great if you have to pay everything out of...
  15. jaypartain

    Point load on stick frame wall

    This is a sample of a wood stud design article I am writing. Tests have been performed to verify the bracing of wood studs by various materials. The reference article is very good and presents the practical issues related to this subject, as opposed to a typical journal article focusing on...
  16. jaypartain

    Capacity of existing wood joist

    I have little experience in this area, but I will offer my penny. I would try to estimate the grade and species of material used and then determine an allowable capacity based on published data. IMO the grade and species is the most important part because it should be field determined. Based...
  17. jaypartain

    timber stress

    I am not sure what the parameters are for your question, but you can find the historic issues of NDS on the AWC website. This may be another source for the design stresses for the wood in question. I know they have a non-printable pdf of the 1944 NDS that I have used to compare historic design...
  18. jaypartain

    wood stair stringer design

    Have you checked for any requirements limiting the overall run/rise of stairs between landings?
  19. jaypartain

    Attending NCSEA conference

    I only went to the Saturday session which was mostly on wood design. I think whether it is worth it or not depends on you expectations. I enjoyed it and picked up a few things that I did not know. I also enjoy wood design. The guy that I went with complained that it was not worth his time...
  20. jaypartain

    Attending NCSEA conference

    Where are you located? I am in Alabama. It would not be cheap to fly me to PA for a seminar. I did go to the Winter Meeting in New Orleans in January.

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