For the given soil type, width of trench, and depth of trench, determine the following for each possible arrangement:
1. The horizontal spacing of the cross braces
2. The size and vertical spacing of the cross braces
3. The size and vertical spacing of the wales
4. The size and horizontal spacing of the uprights

Example 1: Type A soil, 16 feet deep, 12 feet wide
Example 2: Type B soil, 15 feet deep, 14 feet wide
Example 3: Type C soil, 8 feet deep, 6 feet wide

What are the answers for each arrangement?