Blaeberry

9.8.8.6. Design to Prevent Climbing
(See Appendix A.)
1) Guards required by Article 9.8.8.1., except those in industrial occupancies and where it can be shown that the location and size of openings do not represent a hazard, shall be designed so that no member, attachment or opening will facilitate climbing.

2) Guards shall be deemed to comply with Sentence (1) where any elements protruding from the vertical and located within the area between 140 mm and 900 mm above the floor or walking surface protected by the guard

a)are located more than 450 mm horizontally and vertically from each other,

b)provide not more than 15 mm horizontal offset,

c)do not provide a toe-space more than 45 mm horizontally and 20 mm vertically, or

d)present more than a 1-in-2 slope on the offset.

Clearly your soccer net guardrail would not meet British Columbia "Design to Prevent Climbing" Not sure, but I expect similar sentences in the Code accross Canada.