Choosing the right foundations is about more than supporting the structure. It’s about cost, expediency, time, and the overall success of a construction project. So, is it possible to reduce expenditure without compromising on quality or structural performance? That’s what value engineering is all about.
Value Engineering Foundations
Understanding value engineering in foundation design
Value engineering seeks to improve the value of a project by considering all of the essentials – foundation design, ground conditions, installation methods, and long-term performance – so that construction teams can make informed decisions that benefit the project from the outset. So, rather than choosing the cheapest materials or cutting costs wherever possible, architects and builders can come together to look at the whole design and identify ways to improve efficiency without reducing safety, quality, or reliability.
As such, it’s a useful approach to selecting foundations. There are so many different factors to take into account when deciding which foundations will be best for a build. Ground conditions, access, excavation needs, and structural loads all have an influence. Value engineering enables you to assess these factors early, so you can choose the overall best solution.
Reducing programme and improving efficiency
The problem with most traditional foundation methods is that they involve significant prep. With excavation, spoil removal, concrete deliveries, and curing time, they add a lot of hours to time on site. And if the weather is unfavourable, those delays can almost be indefinite.
Helical screw piles offer an alternative. “Screwed” directly into the ground, they can be fitted quickly, with no excavation and no curing period. And they’re ready to use immediately. This doesn’t just reduce the time spent on foundation works; it reduces the entire construction period. Lowering costs without cutting corners
Reducing foundation costs requires more than comparing the initial price of different systems. All the prep and the tidying up afterwards contribute to the final cost. And with helical screw piles, those processes are limited. The simple, low-impact installation also helps to reduce disruption to surrounding areas, which can also contribute to cost reduction, as long as you’re working with suitable ground conditions.
Avoiding over-design
More doesn’t always mean more in foundation design. In most cases, over-design simply increases material use, installation time, and cost without meaningful benefit. This is something else that value engineering seeks to avoid. A good design starts with the actual loading requirements of the project. It also features in ground conditions and relevant engineering criteria, then selects a foundation system to suit.
For screw piles, this means assessing factors such as pile capacity, installation torque, pile length, spacing and the characteristics of the supporting ground. Appropriate calculations, verification and testing can help to demonstrate that the chosen solution meets the required performance criteria. And that’s really the key. Not indiscriminate cost reduction, but purposeful cost management.
Looking at whole-life project value
For the value of a foundation to be truly calculated, you have to look at more than installation cost. There’s the impact on the programme, site disruption, material use, maintenance, and how effectively the foundation supports the structure throughout its lifetime. When you take these factors into consideration, you can ascertain whether your choices will deliver lasting value or a short-term saving.
A smarter approach to foundation design
At its core, value engineering is about making the best design decisions without compromising structural performance. It helps to reduce unnecessary work and improve efficiency, which brings benefits to the building and your budget.
At UK Helix, we work with construction professionals to provide helical screw pile foundation solutions for a range of projects and ground conditions.
If you’re exploring ways to improve foundation efficiency, reduce costs or shorten your construction programme, get in touch with UK Helix to discuss how screw piles could support your project.