BS 4978:1973
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
Specification for timber grades for structural use
Hardcopy , PDF
23-07-2013
English
01-06-1979
Specifies structural timber assessed by visual or machine stress grading. Requirements are given for sizes, deviations in size, processing reductions, knots, fissures, slope of grain, wane, rate of growth, resin pockets, distortion, wormholes and other defects. Illustrations show the principles of knot projection to estimate the knot area ratio in visual grading and the measurement of other characteristics affecting strength.
| Committee |
B/518
|
| DocumentType |
Standard
|
| Pages |
23
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy |
| BS 2482:1981 | Specification for timber scaffold boards |
| BS 1722-7:1999 | Fences Specification for wooden post and rail fences |
| BS 5799:1986 | Specification for safety requirements for children\'s high chairs and multi-purpose high chairs for domestic use |
| I.S. 745:1986 | MACHINE-GRADED HOME-GROWN TIMBER SCAFFOLD BOARDS |
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