Il legno: caratteristiche, costruzioni e recupero

IL RECUPERO DELLE CAPRIATE LIGNEE: IL TETTO DEL DUOMO DI CEFALU'

“Indagine sperimentale per la caratterizzazione meccanica di elementi strutturali misti in legno-acciaio e legno-acciaio-calcestruzzo"

The paper reports the results of the research activity aimed to define the physical-mechanics characteristics of structural elements made of wood-steel, and/or wood-steel-concrete, jointed by steel con¬nectors. The elements used for the tests are: glulam beams with two dif¬ferent dimensions (110x240x4000 mms and 110x140x4000 mms); steel flats 100x6x4000 mms with holes  20 mms arranged like "quinconce"; steel connectors like: flat with 6 mms thickness;  18; angular; polymeric synthetic binder with epoxy base bicomponent (Xepox 40.3/5). Shear tests have been made to define the capacity for deformation and the re¬sistance of the different steel connectors. Moreover, bending tests have been m…