christchurch cathedral · 2012. 7. 14. · christchurch cathedral maximum retention option stage 6...
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CHRISTCHURCH CATHEDRALMAXIMUM RETENTION OPTION
STAGE 1De-construct west porch& west nave wall
Form level access platform into west side of the cathedral
De-constructwest porch
& west navewall
Relocate existing west bracing frame to southern sideIf required
Relocate existingwest bracing frameto southern sideIf required
Existing concrete shearwallstrengthening
CHRISTCHURCH CATHEDRALMAXIMUM RETENTION OPTION
STAGE 2Propel Primary Shield
Frame throughwest wall opening
Propel PrimaryShield Frame
throughwest wall opening
Install west end column frames
CHRISTCHURCH CATHEDRALMAXIMUM RETENTION OPTION
STAGE 3
Install second row of aisle temporary frames
Support aisle roof rafters.
Install second row of aisletemporary frames
Brace aisle walls
West end column frames
Support nave rafters
CHRISTCHURCH CATHEDRALMAXIMUM RETENTION OPTION
STAGE 4
Install first & third rows of aisle temporaryframes
Support roof rafters.
Install first row of aisletemporary frames
Brace aisle walls
Install third row of aisletemporary frames
Propel PrimaryShield Frame
throughto next grid
Install nave column framesat first row of column
CHRISTCHURCH CATHEDRALMAXIMUM RETENTION OPTION
STAGE 5
Brace aisle walls
Install forth row of aisletemporary frames
Propel PrimaryShield Frame
throughto next grid
Install nave column framesat second row of columns
Support aisle roof rafters.
Brace aisle walls
Support nave roof rafters.
Brace clerestory walls
Brace navecolumns
CHRISTCHURCH CATHEDRALMAXIMUM RETENTION OPTION
STAGE 6
Install fifth row of aisletemporary frames
Propel PrimaryShield Frame
throughto next grid
Install nave column framesat third row of columns
Support aisle roof rafters.
Support nave roof rafters.
Brace clerestory walls
Brace navecolumns
Brace aisle walls