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Anchor Bolt Design Seismic Provisions - CSA A23.3-24

Step 1: Check If Seismic Design Categories SDC=SC3 or SC4

Step 2: When SDC=SC3 or SC4, Check If Anchor Bolt Load E <= 0.2U - Tensile
Step 3: When E > 0.2U , Select Anchor Bolt Seismic Design Option - Tensile

Step 4: When SDC=SC3 or SC4, Check If Anchor Bolt Load E <= 0.2U - Shear
Step 5: When E > 0.2U , Select Anchor Bolt Seismic Design Option - Shear



Step 1: Check If Seismic Design Categories SDC=SC3 or SC4         Back to Top

Seismic Design Categories SDC=SD3 or SC4
A23.3-24  D.4.3.3

Anchors in structures assigned to seismic categories SC3 or SC4 shall satisfy the additional requirements of
Clauses D.4.3.4 through D.4.3.8.




Step 2: When SDC=SC3 or SC4, Check If Anchor Bolt Load E <= 0.2U - Tensile         Back to Top

Anchor Bolt Tensile Load Seismic Component E<=0.2U

A23.3-24 D.4.3.5.1
This input is required when seismic SDC=SC3 or SC4
User can ignore this input when seismic SDC=SC1 or SC2

Select Yes when E <= 0.2U
Select No   when E > 0.2U

E - Seismic component in the total factored tensile load
      Nu user input above
U - Total factored tensile load Nu user input above

U = 1.0D + 1.0E + 0.5L + 0.25S    A23.3-24 Annex C1.2.4




A23.3-24 D.4.3.5.1



Step 3: When E > 0.2U , Select Anchor Bolt Seismic Design Option - Tensile         Back to Top

Tensile - Options to Satisfy Additional Seismic Requirements
A23.3-24 D.4.3.5.3  a) ~  d)

This input is required        when     Seismic Category SDC=SC3 or SC4     AND
                                                   Tensile E > 0.2U    (D.4.3.5.2)

User can ignore this input when     Seismic Category SDC=SC1 or SC2    (D.4.3.3)      OR  
                                                   Tensile E <= 0.2U  (D.4.3.5.1)

 

 


Step 4: When SDC=SC3 or SC4, Check If Anchor Bolt Load E <= 0.2U - Shear         Back to Top

Anchor Bolt Shear Load Seismic Component E<=0.2U
A23.3-24 D.4.3.6.1
This input is required when seismic SDC=SC3 or SC4
User can ignore this input when seismic SDC=SC1 or SC2

Select Yes when E <= 0.2U
Select No   when E > 0.2U

E - Seismic component in the total factored shear load
      Vu user input above
U - Total factored shear load Vu user input above

U = 1.0D + 1.0E + 0.5L + 0.25S    A23.3-19 Annex C1.2.4



 
A23.3-24 D.4.3.6.1



Step 5: When E > 0.2U , Select Anchor Bolt Seismic Design Option - Shear         Back to Top

Shear - Options to Satisfy Additional Seismic Requirements
A23.3-24 D.4.3.6.3  a) ~ c)

This input is required          when   Seismic Category SDC=SC3 or SC4 (D.4.3.3)       AND
                                                   Shear E > 0.2U      (D.4.3.6.2)

User can ignore this input  when   Seismic Category SDC=SC1 or SC2     (D.4.3.3)       OR
                                                  Shear E <= 0.2U     (D.4.3.6.1)