3. Lightweight frames

The pathology of lightweight structures with spans of less than 20 m includes trusses, box structures and timber-frame constructions.

3.1 Truss buckling

There are 80 truss losses per year, or 1% of the total construction total. Of the 170 truss claims analyzed in the [3] survey, 66 were due to transverse buckling, which was the cause of 10 of the 14 collapses. These cases of buckling are examples of a series of statutory claims.

The buckling of the trusses shown in figure 12 is typical. The professional design and calculation rules applicable until the publication of DTU 31.3 in May...

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Lightweight frames

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Glulam frameworks

Bibliography

(1) - - Recueil de contributions au calcul des éléments et structures bois (première et deuxième parties). – Annales de l'ITBTP, n° 466, juil.-août 1988 et n° 497 (oct. 1991).
(2) - HUET (C.), GUITARD (D.), MORLIER (P.) - Le bois en structure, son comportement différé...