Steel frames are one of the most fundamental building techniques in modern construction. They essentially provide the skeleton that gives a structure its shape, strength and load-bearing capacity. The majority of the steel work design that SWJ Consulting has done falls into three of these categories schools, office and industrial buildings such as MRFs, material recycling facilities, but they have designed it for a wide range of sectors, including residential and mixed-use development.

The key to success for SWJ Consulting, and their clients, where steel frame designs are concerned is looking at the project as a whole and working in coordination with other contractors from the beginning to align beams and services early so structure and M&E don’t clash once on site.

Efficient steel frame design

Value engineering for us is a consideration in our designs from the get-go. We employ a systematic approach to making designs more efficient without compromising performance or safety. Rather than accepting the first or most obvious solution, our engineers will challenge assumptions and explore any alternatives.

We complete our steel frame designs and detailing in house and the process we have developed over the years allows us to look at various floor plate options that would affect the total weight and therefore the embodied carbon in the building.

Our engineers will go through that design process and look at the floor plate options and model how the steel frames will behave under real load conditions. It is important that we consider how flooring type will dramatically affect the performance and economy of steel-framed buildings.

  • Composite concrete floors are often the best choice because they act as a diaphragm, improving structural integrity and restraint while removing the need for large precast elements.
  • Pre-cast concrete slabs are fast to install but can complicate bracing and temporary works, and often require heavier beams.
  • Beam and block generally don’t create an effective diaphragm and can require bigger steel members to achieve stability.
  • Timber flooring is lightweight but presents challenges in diaphragm action and fire resistance — making it suitable mainly for mezzanines or internal floors, not large commercial builds.

We will also look at any constraints before we complete our designs. For example, pre-cast planks might be considered, but if access and craneage is a problem then composite slabs, which will help with disproportionate collapse issues and reduce steel tonnage, might be a better option, even though this is a slower option as you’ll need to wait for the concrete to cure before you can proceed.

We would model and compare precast slabs with composite decking to find the option that delivers maximum efficiency and cost savings, and present this to the client, even if it might not be the obvious choice.

Lightweight inner leaf solutions and technologies like Westoks (cellular, service-friendly beams) can also be tested in our design process, where appropriate, often leading to a lighter structure and reduced foundation costs.

SWJ Consulting will look to optimising every element, including slab choice, beam type, and bracing, to add value to a project without compromising safety or durability, so the client gets the most effective design for their budget and programme.

SWJ Consulting’s use of digital construction design tools helps set us apart from other engineers as we are able to model superstructures and substructures together to reduce errors and accelerate informed design decisions.

On complex projects like a portalised steel frame sports hall, this approach meant linking steel frame analysis with foundation reactions — removing manual transfer steps and dramatically speeding up turnaround time.

Other examples of steel frame designs we have completed are:

A steel framed office project in Greenham focused on maximising floor area and dealing with limited bracing zones, forcing them to innovate with bracing, beam sizing and connections to meet architectural goals without losing structural performance.

Mixed Use or ‘hybrid’ steel frame designs at Oxford Technology Park, to provide state-of-the-art offices and advanced R&D laboratory space. All the buildings required two internal spans 30m long, which is made possible by the use of steel frames. We worked collaboratively with fabricators and clients on bespoke requirements, modifying column loads and extending framing to suit changing tenants’ needs.

SWJ doesn’t shy away from challenging design teams or the status quo — if a project can be improved. This includes:

This emphasis on proactive coordination, early dialogue and modelling before construction is widely respected in engineering circles.

A design-first, value-driven strategy

SWJ Consulting’s approach to steel frames is rooted in:

  • Value engineering that genuinely reduces cost and improves performance.
  • Technology-enabled modelling to eliminate errors and test design options quickly.
  • Smart and efficient material and method choices — especially around flooring and beam solutions.
  • Cooperation and collaboration with contractors, fabricators and design teams to minimise risk and waste.

Whether you’re an architect exploring structural options, a contractor seeking a competitive advantage, or a developer aiming for cost-efficient build programmes, SWJ Consulting can help make your steel frame project more efficient, more buildable, and more successful in delivery.

Give us a call today on 01993 225085 (Witney, Oxford) or 02381 920656 Southampton or email mail@swjconsulting.co.uk to discuss your project further.

Watch a video on steel frames from SWJ Consulting