WHERE LIDA STEEL FRAME STRUCTURES ARE USED

Lida Steel construction is most often used in

High rise buildings because of its strength, low weight, and speed of construction

 Industrial buildings because of its ability to create large span spaces at low cost

Warehouse buildings for the same reason

Residential buildings in a technique called light gauge steel construction

Temporary Structures as these are quick to set up and remove

TYPES OF LIDA STEEL BUILDING CONSTRUCTION

There are several types of Lida steel building construction. Lida Steel construction is also called steel fabrication.

Conventional Steel Fabrication is when teams of steel fabricators cut members of steel to the correct lengths, and then weld them together to make the final structure. This can be done entirely at the construction site, which is labour-intensive, or partially in a workshop, to provide better working conditions and reduce time.

Bolted Steel Construction occurs when steel fabricators produce finished and painted steel components, which are then shipped to the site and simply bolted in place. This is the preferred method of steel construction, as the bulk of the fabrication can be done in workshops, with the right machinery, lighting, and work conditions. The size of the components are governed by the size of the truck or trailer they are shipped in, usually with a max length of 6m (20ft) for normal trucks or 12m (40ft) for long trailers. Since the only work to be done at site is lifting the steel members into place (with cranes) and bolting, the work at site is tremendously fast. Pre-engineered buildings are an example of bolted steel construction that is designed, fabricated, shipped and erected by one company to the owner.

Light Gauge Steel Construction is a type of construction that is common for residential and small buildings in North America and parts of Europe. This is similar to wood framed construction, except that light gauge steel members are used in place of wood two-by-fours. Light gauge steel is steel that is in the form of thin (1-3mm) sheets of steel that have been bent into shape to form C-sections or Z-sections.

WEIGHT OF LIDA STEEL FRAME STRUCTURES

Consider a single storey building measuring 5 x 8m (16 x 26ft). Let us first construct this in concrete, with four columns at the corners, beams spanning between the columns, and a 150mm (6") thick concrete slab at the top. Such a structure would weigh about 800 kg/m2, or 32 Tons (32,000 kg) in total. If we build this of steel instead, with a sloping roof covered with corrugated metal sheeting with insulation, this would weigh only about 65 kg/m2. The steel framed building will weigh only 2.6 Tons (2,600 kg). So the concrete building is over 12 times heavier! This is for single storey structures - in multi-storey structures, the difference will be less, as the floors in multi-storey steel buildings are built of concrete slabs for economy - but the difference is still significant.

This low weight of Lida steel frame buildings means that they have to be firmly bolted to the foundations to resist wind forces, else they could be blown away like deck umbrellas!

ADVANTAGES OF LIDA STEEL STRUCTURES

Lida Steel structures have the following advantages:

l They are super-quick to build at site, as a lot of work can be pre-fabbed at the factory.

l They are flexible, which makes them very good at resisting dynamic (changing) forces such as wind or earthquake forces.

l A wide range of ready-made structural sections are available, such as I, C, and angle sections

l They can be made to take any kind of shape, and clad with any type of material

A wide range of joining methods is available, such as bolting, welding, and riveting