Teak Squares
The condition of the logs available for sawing today produce only a small quantity of Selected First and up. Most squares are Market Quality. First and Second Quality are also available, but in a comparatively smaller quantity.
Grade names covered and value of defects permitted by these rules are shown in the Table 12. The Table shows the defect values (D.V.) each single square can carry and the parcel average as a whole.
Teak squares grade names and defect/square
| Grade | Previous name | D.V. per Parcel | D.V. per Square |
| Select Special (SA) | Europe 1st Class | 0.25/10 cft | 0.75/10 cft |
| Special (SB) | Europe Intermediate | 0.5/10 cft | 1.25/10 cft |
| Selected First (SC) | Europe 2nd Class | 0.75/10 cft | 2/10 cft |
Definition of defects include; bee-holes, curvature, end holes, equivalent defects not listed (e.g. bird holes rated as decayed knots, etc.), heart defects (crooked heart, diagonal heart cracks, side splits or exposed heart, ring heart cracks, star heart cracks or soft heart, in-barks and flutes, knots, rough grain, sapwood, seasoning checks, sun-cracks, taper and wane. Defect values are calculated as in logs, and each grade has its maximum permissible defects. The table of defects mention knots; bee-holes; diagonal heart cracks; star heart cracks or soft heart; ring heart cracks; end holes; badly twisted or crooked heart; sun-cracks; and rough grain.
Five percent of the total quantity will be allowed for the personal judgement of different inspectors. If more than 5% is found to be defective in re-inspection, the balance of the parcel which comes up to specification will be accepted and the portion falling below grade may be disposed of as agreed between buyers and sellers.
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Must be free from the following defects :
Large knots , large beeholes , suncracks , large pitch or bark pocker , large chalk pocket , inbark , soft heart centre . sap , cross or sloping grain , shake , rough grain ( wild growth ) . splits , or serious mechanical injury , or excessively curly or wavy grain , unless otherwise specified .
In pieces which possess lengths pr widths not less than the average dimension of such parcel of timber . except pieces with lengths from 9' ( or the equivalent in metric system ) upward , which shall be recknot individually the following defects will be allowed : one knot ( 1.30 cm) in diameter , not penetrating to the other side , or one beehole ( 0.6 cm ) in diameter not penetrating to the other side and pieces carrying each of such defects should not exceed 5% of the total number of pieces in the parcel .
Special Market Specifications
These specifications intended for dimensions stock such as Decks and Margin pieces , shall have only one grade in each case .
General Requirement : These shall be well manufactured with cross sections rectangular throughout ; sawn full , thickness and width being 1/8" ( 0.30 cm ) full to the normal dimensions at the time of milling ; fairly straight grained , sound and free from injurious worm or beeholes splits . shakes , sapwood , large knots not exceeding 1,25" ( 3.80 cm ) diameter or unsound knots , corner knots , ingrown bark , wane , heart centres , or imperfections due to heart centre , excessive discoloration and rot , or other injurious defects , unless otherwise specified.
Decks : Upper face and the upper half of the calking edge shall be clear . One perfectly sound knot , but exceeding 1" ( 2.60 cm ) in diameter for every 10' ( 3 meter ) will be allowed . For decks of 10' ( 3 meter ) and longer up to 20' ( 6 meter ) two knots will be allowed provided that the distance between the knots is not less than one-third of the length of the piece . For decks longer than 20' ( 6 meter ) , three knots will be allowed , and the distance between each should be at least one - third of the length of the piece