Design and Types of Steel Roof Truss with Tubular Section
The tubular steel monitor roof truss is the flat roof, along with the raised portions, which are known as monitors. The tubular steel monitor roof trusses have been used to admit light. These types of roof trusses help to provide a more uniform level of daylighting rather than the north light system. The lattice girder of the tubular steel monitor roof truss helps to make a connection between the main columns and the intermediate to the main girder. In this case, the depth of the girder is about 1/8th or 1/12th of the span. The monitor frame tubes of these types of roof trusses have been roofed on the top of the building surface, whereas the curved socket plates have been welded to the columns into two halves.
A metal enclosure plate has been screwed to the decking of the roof. After the roofing system is installed, the roof of the construction structure is sealed by lead flashing. The glazing bars of the tubular steel monitor roof trusses has been screwed with the angle frame in which the opening gear has been attached. The angle purlin has been bolted to the tee cleat, which has been welded to the top tube of the monitor. In this case, welding has been done rather than bolting. In the large span constructions, including factories, shopping malls, industrial work zones, large community meeting halls, the tubular steel monitor roof trusses have been used.
Main features of the Tubular Steel Roof Truss
Lifespan
The steel frame of the tubular steel roof trusses can last for 50 to 70 years, along with low maintenance and replacement.
Uses of the tubular steel roof truss
The tubular steel roof trusses are used in both residential and industrial buildings, including barns, sheds, mills, workshops and others.
Price
The price of the tubular steel roof truss is more economical as compared to the other types of roof trusses.
Weight of the tubular steel roof truss
The steel framing of the tubular steel roof trusses helps to provide greater strength to the weight ratio rather than the roof trusses.
Installation procedure
More skill has been required for the installation of the tubular steel roof trusses. In this context, an experienced team can be able to fit the tubular steel roof trusses efficiently and quickly.
Recycling procedure
The tubular steel roof trusses are 100% recyclable and eco-friendly. The large parts of these types of roof trusses are made of recycled materials.
Ability to deal with extreme conditions
These types of steel roof trusses have the ability to deal with the temperature fluctuations, as well as they can resist the cold weather conditions. In addition, the tubular steel roof trusses are also resistant to rot, mold, insect plagues and termites.
The modern structural design of the tubular steel roof trusses has the ability to adjust with different temperatures more easily.
Effectiveness of the Tubular Steel Roof Truss
There are numerous benefits of the tubular steel roof trusses, which are as follows:
➢ The structures of the tubular steel roof trusses have been designed for the material handling equipment, in which weight savings are substantial, economic considerations.
➢ There are 30% to 40% less surface area in the tubular steel roof trusses rather than the equivalent rolled steel shape. In this regard, the costs of the painting, and the cost of maintenance have been reduced.
➢ Due to having the smooth external surfaces, the collection of the moisture and dirt is also prevented, thus the chances of corrosion have also been reduced.
➢ The tubular steel roof trusses have also more torsional resistance as compared to the other sections of the equal weight.
➢ The ends of the tubular steel roof trusses have been sealed, as a result, the interior surfaces have not been subjected to corrosion. In this context, the interior surface does not require any kind of protective treatments.
➢ The tubular steel roof trusses also have higher frequency vibrations under the dynamic loadings rather than the other sections such as the solid round one.
Different types of steel roof trusses
There are different types of steel roof trusses used in the construction unit, which are as follows:
Pratt Steel Trusses
These types of steel trusses have been used in the long-span buildings, with the span ranges between 20 and 100 m.
Fink Steel Trusses
This is another type of steel roof trusses, which has been used commonly in pedestrian buildings and homes. These types of steel roof trusses help to provide the best strength-to-weight ratio for the spans that have been ranged between 5 m and 9 m.
Warren Steel Trusses
These types of steel roof trusses have been made with longitudinal members which has been joined by the angled cross-members. This leads to an inverted Equilateral triangle-shaped spaces along with the length of the steel roof trusses.
King Post Steel Trusses
These types of steel roof trusses help to support the weight of the large roof. In the case of the simple roof lines and bridges along with short spans, the king post steel roof trusses have been used.
Queen Post Steel Trusses
These types of steel roof trusses have been used for keeping the tie beam from sagging. These types of steel roof trusses are appropriate for the length ranges between 8 m and 12 m. A variety of materials, including steel and wood, has been used in these types of steel roof trusses.
North-light Steel Trusses
This is one of the cost-effective and oldest methods of covering the large areas. In the industrial workshop building, along with the short spans, these types of steel roof trusses has been used. These types of steel roof trusses help to allow for the benefits from the natural lighting with the help of the glazing on the steeper pitch.
To learn more, watch the following video tutorial.
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Howe Steel Trusses
These types of steel roof trusses can span greater than the Pratt steel trusses, which is the best design for the railroad trusses.
