added April 2011
Some notes following the 2011 Honshu earthquakes in Japan
Seismic upgrading and mitigation
- Shear Walls
- Shear Walls
- 6-storey design
- CTV - building codes
- Vancouver Sun - highrise buildings
Canadian housing is unduly vulnerable to heavy earthquake damage
- Housing report - Single-family wood frame house
- ST093-Kharrazi EXPERIMENTAL EVALUATION OF SEISMIC RESPONSE OF
WOODFRAME RESIDENTIAL CONSTRUCTION
- Bay area fixit manual
- earthquakescanada.nrcan.gc.ca - Interpolate 2005 National Building Code of Canada seismic hazard values for your site
- earthquakescanada.nrcan.gc.ca - references
- National Codes 2009
Evidence from earthquakes in California and Japan indicate that light wood-frame buildings must incorporate certain
construction details in order to provide an acceptable minimum level of performance when subject to earthquake loads.
In general, changes to the Code are considered where a problem has been identified, sometimes after a failure has
occurred, or where approaches to design or construction have changed.
· The existing prescriptive structural requirements provided in Part 9 reflect building design that was typical in
the 1950s and 1960s. In the case of housing, for example, openings in exterior walls for windows and doors
were generally modest, large double-height spaces were rare, and most openings in interior walls between
spaces did not exceed 2.4 m wide. Changes in building design and construction mean that the validity of the
simple prescriptive structural requirements in Part 9 need to be reviewed with respect to both wind and
- BC building codes aren't free online, they cost hundreds of $$. There are paper copies in public libraries, and online copies
through academic library programs at e.g. UBC. Some changes and reviews are online.
- Simpson Strongtie LTT tension ties, as seen in "housing report"