Of course they are integral to a building operation.How is it integral. That's the important bit. Integral and fundamental. not any thing used lke a snack shop. As that is not integral.
Certainly makes more sense the way you have put it. But it has to be Integral and fundamental to the construction. Which it clearly is not. Fences are boarding are not integral to a worksite. Boarding over a window however would be as it's waterproofing and serves a purpose.
Again, the wording is building OPERATION, which is not limited to just the physical laying of bricks. as I say, making the site secure and screening it is usually a requirement of a building operation.
I'm going to leave it there as to be honest you're not looking at this rationally any more and nothing anyone says is going to convince you otherwise.
Unless you were intimately involved let's just go with the decision being made by qualified people with vastly more detailed and accurate and pertinent information on the case than you or I.


