Frequently Asked Questions
Where can I find criteria for vibration control for wood members?
1) AF&PA's Load and Resistance Factor Design (LRFD) Manual for Engineered Wood Construction contains information in the Commentary to Chapter 10 of the ASCE/AF&PA 16-95 Standard. http://www.awc.org/Standards/lrfd.html
2) Wood Design Focus paper by Dolan and Kalkert called "Overview of Proposed Wood Floor Vibration Design Criteria" (Vol. 5, #3). http://www.forestprod.org/buy_publications/wood_design_focus_online.php
3) Dolan and Woeste also have some information on controlling vibration at this link, and more (in depth) published in Structural Engineer magazine.
4) APA Technical Note called Minimizing Floor Vibration by Design and Retrofit
http://www.apawood.org/level_b.cfm?content=pub_main
Wood Structural Issues
- Are there deflection limits for cantilevers?
- Where can I obtain information on construction tolerances?
- Where can I find information on wall bracing requirements at corners with openings?
- What is creep and how can I address it?
- How do I calculate a capacity for lumber sheathing or heavy timber decking diaphragms?
- What is the load duration factor (CD)?
- How do I design for notches in a bending member?
- Are there design values for shear perpendicular to grain?
- Are there span tables for cantilever beams?
- Where can I find criteria for vibration control for wood members?
- Where can I find information on designing wood frame structures for performance?
- Where can I find information on wood shrinkage?
- Is there a design method for increased buckling capacity of built-up wood beams?
- Does gypsum provide lateral support for wall studs?
- Per the 2005 NDS®, which Emin should be used for the design of an unbraced structural glued laminated timber column under purely axial load?
- NDS (2001/2005) Section 5.3.7 describes a specific loading scenario of "loaded parallel to the wide face of laminations" for application of the flat use factor, Cfu, for structural glued laminated timber. Does the flat use factor apply where eccentric column load induces moment in the y-y direction?