9. Preliminary Counter-Action
A. Perform a counter-action in advance.
Example:
• Buffer a solution to prevent harm from extremes of pH.
• Dog muzzle.
• Wine vacuum.
B. If the object is (or will be) under tension, provide anti-tension in advance.
Example:
• Masking an area before it is painted.
• Reinforced concrete column or floor.
• Reinforced shaft made from several pipes which have been previously twisted to some specified angle.
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