Tag Archives: Precast Construction

Precast Structures – How are they used in Construction?

The concept of precast construction includes those buildings that are majorly made of components that are standardized and produced in a factory environment that is usually located away the site of construction. These materials are then transported to the site for assembly. They are manufactured by industrial methods of mass production that can help build a large number of buildings in a short time and at a low cost.  The main features of this construction process are as follows:

  • This includes the use of standardized tools, machinery and other equipment that is usually automated and can produce standard, interchangeable parts and products.
  • The division and specialization of human work force is an essential part of this process.

The entire conventional construction process is restructured to enable the interaction between the design phase and production planning. This helps improve the speed of construction. It is hence important to design buildings that have a regular configuration in plan and elevation.

Precast building systems are known to be more economical when compared to conventional multi-family residential construction.

Depending on the load bearing structure, precast construction systems can be divided into the following categories:

  1. Large panel systems
  2. Frame systems
  3. Slab-column systems with walls

Precast Infrastructure in India

Large panel systems
This refers to the multi-story structures that are composed of large wall and floor concrete panels connected in the vertical and horizontal direction. These panels enclose appropriate spaces for the rooms within a building by forming a box like structure.

Precast frames
Precast frames can be constructed using either linear elements or spatial beam column sub-assemblages. Precast beam column sub-assemblages have the advantage that the connecting faces can be placed away from the critical frame regions. Linear elements are generally preferred because of the difficulties associated with forming

Slab-Column Systems with Shear Walls
These type of systems rely on shear walls to sustain lateral load effects and the slab column structure resists the gravity loads. There are basically two main systems in this category. First, the lift slab system with walls where the load bearing structure consists of precast reinforced concrete columns and slabs.

All the precast structural elements are assembled by means of special joints. Reinforced concrete slabs are poured on the ground in forms one on top of the other. They are lifted from the ground up to the final height by lifting cranes. They are then moved to their final positions. Temporary supports are used to keep them in place until the connection with the columns has been achieved.

Pre-stressed slab column system
This type of precast system is a slab column system that uses horizontal pre-stressing in two orthogonal directions to achieve continuity. The reinforced concrete floor slabs fit the clear span between columns and after erecting the slabs and columns of one story, the columns and floor slabs are pre-stressed. The gap between the slabs is filled with in situ concrete and the tendons become bonded with spans.

The use of precast structures in construction will definitely revolutionize the way the construction industry works.

KEF Infra – Infrastructure Development Company

Infrastructure development plays an integral role in the growth of any economy. We are currently experiencing a revolution in the infrastructure industry and economies need to channelize their efforts in order to become future ready and adapt to the changing trends. Traditional methods of building are no longer sustainable as they are impacted by a lot of project delays due to climate changes, labour availability, and accessibility of material or due to regulatory approvals. These methods are also subject to a number of external factors that impact the build quality and the delivery time. These delays in infrastructure can also impact other sectors such as education and healthcare and reflect on the overall economy at large. In order to bridge this gap, and provide better access to quality infrastructure, KEF Infra has set out to employ more evolved and innovative methods of building technologies.

We understand that technology is the answer when demands and expectations from the infrastructure industry is high. Urban growth and development requires time and cost reducing solutions that only technology and higher skilled workforce can provide. By developing a long term solution, with science, design and technology as the foundation, we are positive that the gap shall be bridged.

Technology, innovation and automation are the main driving forces for progress and at KEF Infra, we offer the most efficient and cost effective building solutions without sacrificing architectural design or site utilization. WE are the pioneers in Offsite Manufacturing and have a state of the art offsite manufacturing facility that ensures that quality is maintained at every stage.

Infrasturcture

Offsite Manufacturing – the building process is taken away from the physical site to a controlled factory environment. There is a great improvement in terms of cost savings, time to deliver and the quality of the final structure.

Precast – this is the process of creating a construction product (a pillar, column or a beam) by casting concrete in a reusable mould. This is then cured in a controlled environment and then transported to the physical site and lifted to place.

Modular Construction – this is based on the idea of ‘assemble rather than build’. It brings about a paradigm shift in terms of infrastructure development – especially in the units such as hospitals, hotels and homes.

Above all, these techniques allow for more control over the final product and provide greater efficiency and speed of delivery. It also ensures that the final product is of the highest quality.

These methods are more appealing to the modern age infrastructure because, they are extremely cost effective, agile and sustainable with absolutely no compromise on quality.

The focus is to revolutionize technology and address the real world problems and provide innovative solutions that are sustainable – even in the long run. We believe in being the trends setters, path breakers and change makers to redefine construction!