Building Materials
Acrylic sheets

Are generally unaffected by most household detergents
Possess 10 to 17 times greater breakage resistance than that of glass of equivalent thickness
Possess the light transmission rate of 93%
All of these

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Building Materials
Sapwood consists of

Thin fibre which extends from the pith outwards and holds the annular rings together
Portion of timber between heartwood and cambium layer
Thin layers below the bark
Innermost annular rings around the pith

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Building Materials
Putty is

Softened by a solution of pearl ash and quick-lime soaked in water
All listed here
Used for fixing glass panes
Made with finely powdered chalk and linseed oil

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