This includes in-building and exterior infrastructure located anywhere within the site such as in the footpath, driveway or common area leading from the building.
Mae hyn yn cynnwys seilwaith o fewn adeiladau, a’r tu allan iddynt, a leolir unrhyw le ar y safle megis yn y llwybr troed, y dreif neu’r ardal gyffredin sy’n arwain at yr adeilad.