The bracing action

To resist the racking (horizontal) forces, appropriate bracing units must be installed at 90 degrees to the surfaces facing the wind.

Diagram showing bracing units at 90 degrees to a wall to resist wind forces.

Diagram showing a house with a vertical wall and sloping roof surface on one side and an all-vertical surface on the other. The wall with the all-vertical surface is the worst wind direction.For example, take a single-storey house with a gable at one end and a hip at the other. The gable end facing the wind results in a greater load at right angles to the width of the house than the hip end facing the wind.