Construction services

Wooden trusses

Ancient builders, as well as earlier, with a great knowledge of the operation of building systems, they transferred vertical and horizontal forces to the foundation and subsoil.

tmpbb64-1Diagrams of wooden trusses A. Palladio (1518-1580).

An Italian builder in the 16th century (Andrea Palladio) presented a project of new structural systems - wooden trusses. These trusses could not be made at that time due to the ignorance of other connection methods (and connectors) from these, which were widely used, i.e.. carpentry. Timber construction developed mainly in areas rich in construction timber.

In Poland, residential buildings were built of wood, economic, sacred, industrial, bridges etc..

The ways of connecting individual elements play an important role in the development of wooden structures. Until the 20th century. carpentry joints were used in wooden construction, which include pins, sockets, locks, notches etc.. Timber structures with carpentry joints are complicated and time-consuming, they were made by highly specialized carpenters. In addition, wood with larger cross-sections is used to make these structures: belek, squared timber, bali. The spans of wooden covers in carpentry solutions were not too large.

The idea of ​​Andrea Palladio to build wooden trusses found application in construction only after introducing new joints into wooden structures, for which metal fasteners were used: nails, pins, screws, rings, press-in plates and glue. As a result, design solutions have been simplified, especially combinations of elements (connectors), which made it possible to cover buildings - roof structures - with a span of up to 100 m.