1. 8 x 40 feet (standard "long" shipping container), or
2. 15 feet, 9 inches x 72 feet (largest modular home size allowed on some US state highways)
I think 8 x 40 would be pianomax, 15 x 72 would be super pianomax. Alexander Piano is ~18 feet so it should fit inside of a standard 8 x 20 ft container with sufficient bracing. You're probably looking at 60-80 tons (guess) of wire tension for a 40' piano, maybe more.
1. 8 x 40 feet (standard "long" shipping container), or
2. 15 feet, 9 inches x 72 feet (largest modular home size allowed on some US state highways)
I think 8 x 40 would be pianomax, 15 x 72 would be super pianomax. Alexander Piano is ~18 feet so it should fit inside of a standard 8 x 20 ft container with sufficient bracing. You're probably looking at 60-80 tons (guess) of wire tension for a 40' piano, maybe more.