SwinnyGG and NRP99, thanks for your replies.
I checked those standards, they cover the lifting equipment and latching techniques; they don't cover anything below the hook.
I'll continue to look.
I've been looking for standards, for the California and Ontario jurisdictions, that cover hoisting attachment features on oversize loads (attachment items, connected structural members, et cetera).
We will be hoisting large enclosures onto rooftops, using a crane.
Where can these standards be...
