Height of a drain face stone above the liner, or the pitched path stone above the lower stone tread; forms the “depth� of the drain and deflects the water, or forms the height of the pitched “step�.
Found on http://www.encyclo.co.uk/local/20717
An extension of a part of a wall above the edge of the roof. A flat roof will frequently have upstands round its edge.
Found on http://www.encyclo.co.uk/local/20938