Hi KatieSue,
Having read page 35 as provided by JW, you can put an LPG-fuelled BBQ hard-up against a dry brush fence as long as the bottle doesn't exceed a 1 pound gas capacity.
Just why a 1 pound bottle is less of a risk than a 1.001 pound bottle, and why it's OK to (potentially) burn down a 1 or 2 family dwelling (as opposed to a 3 family dwelling) with it is anyone's guess. It always amuses me that the more detail that is put into this kind of document, the more loopholes are accidentally included...so I guess you could use a 50 pound butane bottle without issue, as butane isn't mentioned.
Glancing over other parts of the document, it appears that you Americans can thank the Darwin Award nominees that put whole frozen turkeys into boiling oil and recreate the Pompeii eruption (as can be seen in many a YouTube clip).
Anyways, as my cheesy footer says, it's all for the grater good.
Love and hugs,
The Stoat XXX.
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