Is there a defined minimum barrel clearance?

I'm looking for a minimum guaranteed clearance between any two barrels (but not necessarily barrel and haybales/side.)

I understand that there's no guaranteed "straight path" though, which is fine, but I need to know how much space there is to maneuver. I'd hope for at least 3 feet clearance ring around each barrel. (Clearance rings may overlap, but the distance between any two barrels would be at least 3 feet.)

Separately, is there a specification of how "rough" the "wall climbing" ramp will be?

What will be the maximum depth of crevices, and maximum/minimum length of span of crevices, and minimum/maximum width of elements?

Or, if this is "glue stuff to a flat board," what are the dimensions of the cross sections of those things?

I'm looking for a minimum guaranteed clearance between any two barrels (but not necessarily barrel and haybales/side.)

I understand that there's no guaranteed "straight path" though, which is fine, but I need to know how much space there is to maneuver. I'd hope for at least 3 feet clearance ring around each barrel. (Clearance rings may overlap, but the distance between any two barrels would be at least 3 feet.)

Separately, is there a specification of how "rough" the "wall climbing" ramp will be?

What will be the maximum depth of crevices, and maximum/minimum length of span of crevices, and minimum/maximum width of elements?

Or, if this is "glue stuff to a flat board," what are the dimensions of the cross sections of those things?