The introduction of trusses in the 1960s was one of the first significant changes in residential framing methods for many years. Trusses were first used in roof construction but now can also be found in the floor systems of many new homes. Trusses are composite framing members made up of small sections of dimensional lumber joined together in such a way that the loads ultimately bearing on them will be carried to the outer walls of the house, thus providing flexibility in floor design. Their prefab construction also speeds the framing installation process.

Considerations
The use of trusses does not compromise the structural integrity of the house in any way as long as the trusses are properly designed for the loads and floor plan present and are installed as intended. In fact, roof truss construction is now the standard in most areas. The HouseMaster Technical Staff reports, however, that there are some restrictions, foremost being the fact that individual truss members should not be cut or field altered. Doing so changes the load paths through the truss and weakens it. If such a situation is encountered, an evaluation by an engineer or manufacturer representative is advised.

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