Timber Gable to Masonry Blockwork External - wall tie requirements Maximum Net Surface Wind Pressure
Cullen FT-100 = 1.279kN/m 2 3.7 ties/m 2 (450mm vertical & 600mm horizontal centres)
Cullen FT-100 = 2.558kN/m 2 7.4 ties/m 2 (225mm vertical & 600mm horizontal centres)
Minimum of 1 tie must be positioned in this zone at 600mm horizontal centres. 2 sets of wall ties with at least 1 tie positioned within 225mm of top of gable panel. Ties positioned at maximum of 225mm vertical & 600mm horizontal centres. Wall ties for general area positioned at maximum of 450mm vertical & 600mm horizontal centres (vertical centres can be reduced to 225mm if required by Building Designer).
Minimum of 1 tie must be positioned in this zone at 600mm horizontal centres.
2 sets of wall ties positioned at maximum of 225mm vertical & 600mm horizontal centres from bottom of gable panel.
Top row of masonry wall ties provided at 300mm centres maximum.
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Technical support: 01592 771132 / technical@itwcp.com / https://www.itwcp-offsite.co.uk 7
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