Building Materials
For the manufacture of plywood, veneers are placed so that grains of adjacent veneers

Inclined at 45°
Parallel
Inclined at 60°
Run at right angles

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Building Materials
Sapwood consists of

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

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