if you use the string line method i mentioned in one of the posts above.
if you set the fall in the string line (eg. 4" fall away from house) and then when you lay your slabs, just make sure that the top of the slab is barely below the line, like 1mm,
then the slabs will have the same fall as the line. (ie. 4" fall away from house)
just use a spirit level to get the height of the slabs not directly below the line,
its hard to describe, but its quite easy if it was shown to you
also congrats on doing it.
it is hard work but i like being outside
also i have a bad back from all the lifting lol
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