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End

Vertical bracing design (continued)

Yes

Analyse the bracing system forlocal imperfection forces

/ 2

/ 2

The local imperfections for inclinedcolumns and spliced columns are not

considered to be coexistentSelect worst storey shear dueto local imperfections

For each floor

Verify the bracing system members

for the worst forces(due to global or local effects, in

conjunction with ULS forces)

EN 1993-1-1 5.3.2(5)

Calculate the forces due to

imperfection in column splices

Are columns spliced ?

No

For each floor

Forces on floordiaphragm

Forces on bracingsystem due toULS loads and

local imperfection

Calculate the imperfectionfor horizontal forces on floor

diaphragms

EN 1993-1-1 5.3.3(4)

Calculate forces due to initialimperfection

Forces due toimperfections in

splices

Repeat for each floor

FromPage 1

Calculate the imperfection

for splice

Flowchart : Vertical bracing design

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Reference(s)

Flowchart : Vertical bracing design

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ORIGINAL DOCUMENT

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14/09/2005A. BUREAU CTICM

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