Site Fabrication or Prefabrication: Which is best?

In the world of construction, two primary methods stand out when it comes to fabricating welded pipework: on-site fabrication and prefabrication. Each approach has its own unique set of advantages and considerations.

Understanding the differences and benefits of on-site fabrication and prefabrication is crucial for construction professionals looking to make good use of project timelines, budget, and overall project success.

On-Site Fabrication

On-site fabrication involves the fabrication and welding of pipework directly on site. It’s a method used mainly if site tie ins or repairs are required on site, and cannot be fabricated off site.

Some key aspects of on-site fabrication include:

Time and Labour Intensive

On-site fabrication may present challenges such as the requirement for skilled labour, equipment setup, and precise measurements, which can result in longer construction timelines. This might pose a disadvantage to those wanting a quicker turnaround on projects.

Site Constraints

When it comes to on-site fabrication, a number of challenges can arise due to limited space, logistics, and access constraints. These factors can significantly impact the efficiency and productivity of the fabrication process.

Limited space at the construction site can create difficulties in setting up the necessary equipment and workstations required for fabrication. It can also limit the ability to work on multiple components at once, potentially causing delays and slowing down the overall fabrication process.

Prefabrication

Prefabrication, on the other hand, involves the manufacturing of components off-site, which are then transported and assembled at the construction site.

This method offers several advantages, including:

Enhanced Efficiency

Prefabricated components are produced in controlled environments, minimising delays caused by weather conditions and site limitations. For example, Abbey Pipework’s site consists of 15 welding bays to ensure multiple projects can be worked on at any one time.

We also work with all sizes of Mild Steel, up to 900mm, and hold large quantities of stock at all times. This enables us to commence commissioned works immediately, with quick response times and no delays caused by waiting for delivery of tube and fittings.

This leads to faster project completion and reduced on-site labour requirements.

Abbey Pipework prefabricated pipework in workshop

Quality & Safety

By moving construction activities off-site, prefabrication reduces on-site hazards and improves overall safety conditions.

Also, prefabricated components are manufactured using standardised processes, ensuring consistent quality, precision, and adherence to design specifications. At Abbey Pipework, our welders are qualified to BS EN 9606-1 and weld procedures are qualified to BS EN 15614-1. So, you can be rest assured all your prefab services are in safe hands.

We’re proud to say that we’re known for our enviable reputation for quality and service on each of our projects.

Abbey Pipework prefabricated pipework loading onto van

Cost-Effective

When using prefabrication services, the process allows for optimising material usage and reducing waste. This results in saving costs on each project.

Abbey Pipework’s skilled welders, aided by advanced machinery and technology, ensure that materials are utilised to their fullest potential, with very minimal waste.

As components are manufactured in controlled environments during the prefab process, construction activities on-site can be streamlined. This ultimately allows for reduced labour hours and improved productivity.

Design and Innovation

Prefabrication allows for advanced design possibilities, incorporating innovative techniques and technologies into the manufacturing process.

Our 3D CAD software allows us to create accurate quotes and streamline the fabrication process by breaking them down into smaller ISO drawings.

Our talented in-house CAD specialists handle the conversion process, with any necessary weld mapping and NDT updates seamlessly integrated into the final ISO drawings.

 

Inhouse CAD at Abbey Pipework

So, which is best?

Both on-site fabrication and prefabrication have their differences, and the choice between the two depends on project requirements, timelines, and budget considerations.

While on-site fabrication can provide flexibility to projects on site, prefabrication has become increasingly popular thanks to its numerous benefits that contribute to overall project success. By integrating prefabricated elements, teams can enjoy reduced schedules, materials, labour, waste, and costs, all while maintaining high-quality standards.

Interested in working with pipework prefabrication and welding specialists on your next construction project?

Get in touch with us on 01268 526723.