NORMS FOR DESTRUCTIVE BENDING MOMENTS OF T-SHAPE CORNER JOINTS OF FRAME STRUCTURAL ELEMENTS MADE OF SOLID SPRUCE WOOD WITH A CROSS-SECTION OF 50 х 30 mm. INNO [Internet]. 2026 Jan. 30 [cited 2026 Feb. 25];8(2). Available from: http://innojs.ltu.bg/index.php/scjournal-inno/article/view/247