The four main types of construction are: residential construction, commercial construction, industrial construction, and infrastructure construction. 

RESIDENTIAL CONSTRUCTION 

It is the process of constructing a single or multi-family house for beauty, comfort, utility, and durability. A residential building should be a comfortable space where human beings can survive and thrive. 

COMMERCIAL CONSTRUCTION 

It is the process of designing, building, or renovating commercial structures that can be leased or sold as office spaces, storage shelters, or even warehouses. 

INDUSTRIAL CONSTRUCTION 

It is constructing premises or structures that can be used for manufacturing, such as factories, power plants, warehouses, and processing plants. 

INFRASTRUCTURE CONSTRUCTION 

This is the construction, renovation, and maintenance of public and private physical structures such as roads, bridges, railways, pipelines, electricity supply lines, water supply lines, tunnels, and dams to provide shelter. 

THE FIVE TYPES OF CONSTRUCTION

We use buildings daily; however, most people need to learn how to construct them or the type of construction that influenced them. Different regulations govern different construction types. 

A good understanding of your building’s construction type is necessary to design services such as fire fighting. Analyzing your project from an architectural and engineering perspective helps us question our conventional construction awareness.

WHAT DOES CONSTRUCTION TYPE MEAN?

Construction type refers to how a building is resistant to fire. This includes all the structural members and non-load-bearing components of the building. The choice of materials and design of a structure affect a building’s resistance to fire, earthquakes, and other related phenomena, thus affecting the construction type. There are five major construction types widely recognized in the construction industry.

THE FIVE DIFFERENT TYPES OF CONSTRUCTION TYPES

At first glance, most buildings look similar. However, the underlying materials primarily affect the durability of a building. We classify projects from Type 1 to 5, depending on how fire-resistant a structure is. 

Some facilities are more vital and cheaper to construct, but they need to handle fire better. Type 1 buildings have the highest fire resistance, and type 5 structures have the poorest fire resistance. Without further ado, let us cover the different construction types.

TYPE 1: FIRE- RESISTIVE 

Generally speaking, Type 1 buildings are high-rise residential and commercial spaces. These buildings are made mostly from concrete and steel, and we classify them as the most robust during a fire. 

They can withstand high temperatures for a long time. These ratings apply to roof and floor assemblies, internal partitions, and bearing and support walls. The strengths of these buildings are that they are not vulnerable to collapse and are fire-resistant for up to four hours. 

The weakness of these buildings is if they are made of steel, they wear down over time due to corrosion. The roofs and windows of these buildings are also not easily penetrable five times. Some of these buildings have pressurized stairwells to curb the spread of fire.

TYPE 2: NON- COMBUSTIBLE

Most modern “big box” stores and shopping malls qualify as Type 2 buildings. We make these buildings from lightweight concrete, metals, and masonry, which are primarily non-combustible. However, combustible materials might be present, such as foam and rubber. 

These buildings have sound fire suppression systems but are prone to collapse, mainly because of their types of roofs. In a fire, firefighters try to ventilate the building to mitigate flashovers which are sudden temperature increases. 

These buildings burn for one to two hours, depending on the type of materials used in construction. The materials of these buildings are slow-burning, which ends up adding fuel to the fire. In a fire, firefighters ventilate these buildings using roll-up doors or skylights to a building’s exterior.

There are significant differences between type 1 and type 2 buildings. Type two buildings are susceptible to expansion, relaxation, and distortion of steel members resulting in an almost total collapse in case of fire. The interior partitions of these buildings are from non-combustible materials and some limited approved combustible materials. Examples of these types of construction are modern school buildings.

TYPE 3: ORDINARY TYPE

We also refer to these building structures as brick and joist structures. These structures have walls made from bricks or masonry, wooden roofs, and floor fire-protected fire protection. 

In most cases, all or part of the interior elements, such as frames, floors, and ceilings, are made from combustible materials. All type three buildings have wooden roofs, but conventionally, older type 3 buildings have framed roofs, but new buildings have lightweight roofing systems. 

The walls are either reinforced masonry or concrete. When firefighters approach a type 3 building, they must determine whether it is old or new to make critical decisions on ventilation. Both new and old buildings fall in the ordinary construction type category. Some of these buildings are schools, residential and small commercial buildings.

An advantage of these buildings is that their combination of materials allows them to stay standing even if floors collapse. Their major weakness is that many connected attics or void spaces enable fire to spread rapidly.

TYPE 4: HEAVY TIMBER TYPE 

Most of the buildings constructed before 1960 were heavy timber-type buildings. Firefighters easily recognize them as they have timber walls and roof spans. The timber members are solid or laminated and must fit dimensional requirements. 

Examples of such buildings are old factories, churches, barns, and residential houses. Structural supports such as beams, arches, and columns require a minimum of eight inches for these construction types. 

Sometimes these buildings may have non-combustible load-bearing walls. They also quickly drain water, allowing the firefighters’ water to quench the fire to seep out easily without increasing the overall building weight. 

Most of the connections are metal joint connections that fail quickly during fires. In the case of factories, oil, goods, and materials can increase the severity of the fires. Large dimensional timber buildings hold up well during fires, but damage from weather and termites increases their risk of collapse.

TYPE 5: WOOD- FRAMED TYPE 

Many new modern homes are Type 5 construction types. This is because they use combustible materials for the walls and roof. Unlike the large-dimension wood used in heavy timber-type buildings, we make these structures from lightweight or flammable manufactured wood. 

This construction is easy to set up, inexpensive, and structurally sound. It, however, is not fire-resistant and collapses within minutes in the event of a fire. However, firefighters can deal with these buildings as they are well-ventilated from the wood frames. 

This is a disadvantage as the fire spreads rapidly due to high ventilation. One way to prevent the collapse of these buildings is by using big timber members for the main structural elements. These structures have deficient fire-resistant properties.