Park chairs are designed to withstand constant use and harsh weather conditions, but how do they prevent metal fatigue? Metal fatigue occurs when repeated stress weakens the material over time, leading to cracks or breaks. To combat this, park chairs use several strategies:

1. High-Quality Materials: Chairs are often made from corrosion-resistant metals like aluminum or galvanized steel, which are less prone to fatigue.

2. Reinforced Joints: Critical stress points, such as legs and armrests, are reinforced with extra welding or thicker metal to distribute weight evenly.

3. Flexible Design: Some chairs incorporate slight flexibility in their frames to absorb stress rather than resist it, reducing strain on the metal.

4. Protective Coatings: Powder coatings or paint layers shield the metal from moisture and oxidation, preventing premature weakening.

5. Regular Maintenance: Many parks inspect and repair chairs periodically to address early signs of wear before fatigue becomes severe.

By combining these methods, park chairs remain durable and safe for years, even under heavy use.