1.Explain why lime is sometimes used in mortar.

2.Explain the purpose of wall ties in cavity wall construction.

3.Identify the most effective type(s) of joint finish to resist rain penetration.

4.Explain the potential problems when introducing plasticisers into a mortar mix.

5.State six criteria which may influence the choice of unit selected for a particular project.

6,Explain the purpose of mortar in masonry construction.

7,Explain the term ‘rendering’ and the advantages of using a weak cement : lime based mix when carrying this out.

8.State the purpose of a damp-proof course and identify the material properties required of it.

9.Explain the purpose of a bitumen (or alternative) coating on an ashlar wall.

10.Identify six factors which influence the compressive strength of masonry.

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