In a medium saucepan, bring green beans, ½ teaspoon salt, and water to cover to a boil over medium-high heat. Reduce heat, and simmer until tender, about 6 minutes. Drain and transfer to an ice water bath to stop the cooking process. Drain well.
In a 6-quart bowl, layer lettuce, ham, eggs, radishes, and green beans. In a medium bowl, whisk together mayonnaise, buttermilk, grated Parmesan, dill, vinegar, sugar, pepper, and remaining ¼ teaspoon salt; pour mixture onto salad. Lightly cover and refrigerate for at least 1 hour before serving or for up to 6 hours. Garnish with shaved Parmesan and dill, if desired.
Recipe by Paula Deen Magazine at https://pauladeenmagazine.com/layered-ham-vegetable-salad-recipe/