单词 | stress grade |
释义 | > as lemmasstress grade stress grade n. (a) each of a number of categories into which timber intended for structural use may be placed according to its estimated strength (cf. stress grading n.); (b) (as modifier) stress-graded; esp. assessed as suitable for structural use. ΘΚΠ society > occupation and work > materials > raw material > wood > [noun] > building wood > grading of stress grade1922 1922 Southern Lumberman 2 Sept. 35/1 The second analysis was based on the classification of the timbers into the four stress grades proposed by the United States Forest Products laboratory. 1945 Fed. Reg. 5 June 6580/3 All building construction using any stress grade lumber shall be designed in accordance with the applicable provisions of the War Production Board Directive No. 29. 1973 Materials & Technol. VI. i. 27 In Britain, four basic stress grades are specified for sawn softwood, and three for laminated timber. 2015 B. K. Bradshaw in R. J. Ross Nondestructive Eval. Wood (ed. 2) x. 111/2 By the time the veneer is sorted into stress grades, significant drying costs have been incurred. < as lemmas |
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