Warning This information has been archived because it is outdated and no longer relevant.

Archived Content

Information identified as archived on the Web is for reference, research or recordkeeping purposes. It has not been altered or updated after the date of archiving. Web pages that are archived on the Web are not subject to the Government of Canada Web Standards. As per the Communications Policy of the Government of Canada, you can request alternate formats on the "Contact Us" page.

4.1.8.12.(4)
ApplicationIntent
OS2OP2+
ObjectiveOS2 Structural Safety
Attribution
(a) [F20-OS2.1]
Application
Application 1: 
Effects of accidental torsional moments in the design of buildings for earthquake when dynamic analysis is used.
Exceptions: 
except as stated in Sentence 4.1.8.1.(1), which applies to areas where the spectral response acceleration amplified for site conditions equals the floor levels found in low seismicity regions with Site Class C (i.e. very dense soil and soft rock).
This applies to buildings described in Sentence 1.3.3.2.(1) of Division A and to buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9] that are required to be designed in accordance with the requirements of Part 4.
Top of Page
Intent
Intent 1: 
To limit the probability that the dynamic analysis will not take into account the effects of accidental eccentricities, including dynamic amplification of the static effect of accidental eccentricities, which could lead to structural failure, which could lead to harm to persons.
Intent 2: 
To direct Code users to Sentence 4.1.8.11.(6) for the calculation of the lateral force at each level of the building.
Top of Page