Wood trusses or trusses, which are so commonly seen in the present time, are actually triangulated lumber frames that are bound together with the help of connector plates of galvanized steel, commonly termed as the truss plates. In simpler terms, these are essentially a structure, which has two-for ce members and those members are assembled in such a manner that the whole thing looks like one single object. They are spreadly used in construction and for other purposes. Let’s trace a brief history of trusses and see how they made their way in our every day life.
Evolution of the Truss
In the modern times, the initial trusses were made using frames of light wood. They were constructed on the sites of construction using plates of plywood gusset or nailed boards at the joining areas. The truss structure has been around for a very long time. These were used by men since they started using log pieces. Centuries later, they were used with sawn lumber. Using the early trusses of timber ensured prolonged life spans and was cost effective as well, unlike the un-trussed lumber. However, they used to take a considerable amount of time in building on the site of construction.
History of Trusses
The history of trusses leads us back to the year 1952, in the Pompano Beach of Florida, the engineered wooden truss connected with metal plates was invented & patented. This interesting invention was a result of a long experimentation of the gusset plates of plywood and various combination & concoctions of staples, nails, screws, and glue. It was invented by A. Caroll Sanford who founded the Sanford Industries. This invention was very important and marked the truss industry’s beginning. This industry gained more and more popularity ever since and now it is changing commercial buildings, houses, and apartments. This industry is now a big part of the construction industry.
Application and Uses of Truss
The following are the common truss use and applications.
Buildings and Constructions
The most widely used trusses in the present times are the wooden one. They are used extensively in the commercial, residential, agricultural, and institutional construction. The higher strength-to-weight ratios of these provide greater flexibility and longer spans in the layouts of a floor plan. These can be conveniently designed and created in almost all sizes and shapes. Their uses can be restricted by shipping limitations, manufacturing capabilities, and handling considerations.
Component connections can be considered a very critical factor to the integrity of the framing system’s structure. In constructions with large and clear span wooden trusses, the critical connections are the connection & its strength between these & their support. Including the gravity-induced forces or the bearing loads, the connections must withstand strong forces that act perpendicular to that truss’ plane & uplift forces because of the wind. Wood posts enhance the advantage of direct, strong, yet cost-effective connections between walls and large trusses. These rests on many notches & stays bolted to a place. A special bracket or plate may also be included to improve the transfer capabilities of the connection load.
The handling, as well as the storage of the trusses’ raw material and component parts, is a crucial factor that contributes to the finished product’s overall quality. The lumber, prior to the process of manufacturing and during that process should be kept safe from snow and/or rain. In certain cases, one should also have to keep the humidity of the storage area under control. Often, the reason behind the failure of a system of the roof truss or wood floor is found to be improper handling during installation and delivery.