| 摘要 |
PCT No. PCT/SE79/00253 Sec. 371 Date Aug. 8, 1980 Sec. 102(e) Date Aug. 8, 1980 PCT Filed Dec. 18, 1979 PCT Pub. No. WO80/01297 PCT Pub. Date Jun. 26, 1980.The present invention relates to a truss of the lattice type. The truss comprises an upper and lower chord of wood and a continuous web of steel in a zig zag configuration arranged between the chords to form inclined struts. The bent portions of the web are received in recesses in the chords and fastened in the recesses by a hardening and binding substance which forms a body which replaces wood removed to form the recesses. |
