Building with precast panels/slabs could save you more than 30% on construction costs and time. We at NyumbaBora Limited advocate for the use of innovative technologies & materials to deliver quality and durable spaces and homes.
Traditional methods of construction come with various challenges and limitations. To construct a building, you’d require a lot of space, a lot of time is consumed, excessive amounts of construction waste is produced, you’d require a large workforce hence increasing the health & safety risks. With modern methods of construction, in particular precast concrete, you will increase efficiency and be able to deliver quality and durable structures at a cheaper and faster rate.
Advantages of Precast Concrete
Saves Construction Time: Construction with precast concrete saves time and reduces the danger of project delays.
Usage of Pre-stressed Concrete: Structural materials of high strength and load-bearing capacity may be obtained by using pre-stressed precast, resulting in greater clear span, smaller cross-sections of structural components, and so on.
Quality Assurance: Precast Concrete may be monitored for critical elements that affect building quality, such as curing, temperature, mix design, formwork, and so on.
Precast concrete is the quickest building technology accessible, and it reduces project site negative consequences. So improved quality construction is achieved.
Aesthetics: Because the structures are constructed in a regulated manufacturing setting, a variety of colour and texture combinations are attainable.
A broad selection of forms and sizes are offered, all with smooth finishes, increasing the aesthetic value of the items.
Durability: Structures made of precast concrete have a longer service life and require less maintenance.
Precast concrete with a high density is more resistant to acid attack, corrosion, and impact, decreases surface gaps, and resists the buildup of dust or mold, which can pose health issues.
Cost-effective: The streamlined building process saves time, improves productivity, quality, and safety, and hence lowers costs.
Safe Construction Sites: Precast Concrete construction does not necessitate the storage of raw materials on site.
It eliminates the need for traditional form works and supports, as well as wastage, manpower and other factors, and thereby creates a safe working environment. Making it also suitable for tight construction sites.
Disadvantages of Precast Concrete
High Initial Investment: Heavy and complex equipment are required for the installation of Precast Concrete, which requires a large initial investment.
To make a suitable return, a substantial number of precast construction projects must be offered.
Transportation Issue: The building site might be far away from the Precast Concrete facility.
In such situation, trailers will be used to transport the precast slabs to the job site.
In many circumstances, the lower cost of Precast Concrete is offset by the higher cost of transportation.
Handling Difficulties: Handling precast concrete necessitates extreme prudence.
Precast members are often heavy and massive, making them difficult to handle without causing damage.
Precast elements are often handled with portable or tower cranes.
Modification: It is hard to modify the design of a precast construction.
For example, dismantling a structural wall for renovation will have an effect on the structure’s overall stability.
Sensitive Connection Works: One of the most important aspects of maintaining excellent structural behaviour is the assembly of precast components.
Connections between numerous structural parts, whether simple, semi-rigid, or stiff, must be overseen and completed appropriately to assure the integrity of the connection.
Faulty connections can also lead to water leaks and a loss of sound insulation.
Precast wall panel line, a hollow-core flooring slab line and a line for columns and prestressed beam are currently being used widely because the construction period of a house has been shortened and saves up you to 40% on construction costs.
The technology has been approved by the Ministry of Lands, Housing and Urban Development and is expected to help provide the much-needed housing for low- and middle-income earners.