Building Materials, Third Edition

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Following tolerance are permitted on the dimensions.

Dimension Tolerance

Length +6 mm

Width +3 mm

Squareness 0.2 %

Edge straightness 0.2 %

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A wood panel glued under pressure from an odd number (usually 3 to 13) of layers/piles of
veneers is known as plywood (Fig. 4.25). The outer most veneer sheets in a plywood panel are
called/faces. The interior ply/plies which have their grain directions parallel to that of the
faces are termed as core/centre. Other piles which have grain directions perpendicular to that in
the face are termed as cross bands.