photo#1. my most advanced beans planted about 2'0" apart and just beginning to flower. It's summer here in the southern hemisphere. These have been planted amongst a diverse collection of plants - Amaranthus, sunflowers, basil, thyme, parsley, tomatoes and more. Remember that beans and peas are every plants' companion. If you lose some of your peas and beans plant other things amongst them.
photo#2. making a liar of myself this is a monoculture of dwarf beans planted about 18" apart. You see they will join and overlap before they have finished.
I will photograph the polyculture bed as soon as the sun and my camera cooperate.