Why must prestressed concrete piles be picked at the designated lift points shown on the shop drawings?

1. Lift points are only for painting and have no structural meaning
2. Picking at the designed points keeps bending stresses within the pile's handling capacity and prevents cracking
3. Prestressed piles cannot crack, so any pickup location is acceptable
4. Lift points are used only when the pile will be jetted, not when it will be driven