Shane Groom.2

Like all things, the answer might depend on context. And it can vary state to state. While it is risky to deviate from the code, if you can prove the same reliability, then you meet the safety standard. The ABCB is based on a published article, so you could base your design on the article. If it is going through the VBA, you will need a performance based solution and a wind management plan. As you suggest, tie it down if it gets too windy. It's reasonable to look at wind forecasts say 48 maybe 72 hours maximum. If you are doing a specific activity, then you can be sure it will be safe if it only takes 1-2 days. If it is in use for 1 year, but it can be tied down in a few hours with no notice, then it may be OK with a monitoring and action plan. If the worksite is closed for 48 hours or more, you should be tying it down, one would expect. If none of the above can be done, you may want to follow the code. All advice is general and you should consult an engineer. No liability will be accepted for anyone relying upon the above.