At what elevation does the MAD table altitude factor begin?

The correct answer identifies that the altitude factor begins at 3,000 feet or 900 meters. This is significant because as elevation increases, the performance of cranes and lifting equipment is affected due to a decrease in air density. The MAD (Maximum Allowable Deviation) table provides critical data that helps operators adjust for these changes in elevation to ensure safe lifting operations.

Starting adjustments at 3,000 feet recognizes the point where these performance differences become critical. Operating at elevations higher than 3,000 feet requires careful consideration of weight limits, wind resistance, and the overall dynamics of crane operation to maintain safety and efficiency. Awareness of these altitude factors is essential for anyone involved in lifting operations at various elevations, ensuring that they comply with recommended practices for safe crane use under different conditions.