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Improper continuous load path design lacking bracing results in the failure of gable end walls under high wind conditions.
Right - Foil-faced polyisocyanurate rigid foam is attached to the existing exterior wall with vertical wood furring strips
Right – Retrofit Specification for installing roof sheathing an 18-inch gable end overhang
Right – Ripped OSB provides furring strips for a ventilation gap behind the wood siding.
With the nailed block method, wood blocks are attached to the sill plate and the cripple wall plywood is attached to the block to provide shear strength for correctly bracing a cripple wall in a seismic retrofit