Make notes on the design specification and construction details that should be adopted to ensure satisfactory performance of clay brickwork when used in:

(i) An earth retaining wall;

(ii) An internal non-load bearing partition wall of a reinforced concrete frame building;

(iii) In the outer leaf of an external cavity wall above DPC level.

For each of the durability problems efflorescence, frost attack and sulfate attack:

(i)describe the mechanism of the process and how it affects the strength and durability of masonry components;

(ii)(ii) Outline design and construction practices that should be adopted to minimize potential damage and indicate under which circumstances masonry is most at risk.