Why Early Engineering Involvement Saves Money on Every Project

Why Early Engineering Involvement Saves Money

I have lost count of the number of times I have been asked to review a design that is weeks away from construction, only to find issues that would have been straightforward to resolve at the concept stage but are now expensive to fix. Early engineering involvement is not a luxury. It is the single most effective way to reduce cost and risk on a development project.

The Cost of Late Involvement

When the structural engineer is engaged after the architectural design is finalised, the scope of the engineering is limited to making a fixed design work. This leads to:

#### Over-Engineering

When the column grid and basement layout are locked before the structural engineer is involved, the engineer has to work within constraints they did not help set. This often means larger members, more reinforcement, and more complex details than would have been necessary if the structural system had been considered from the start.

I have seen projects where moving a column by 300mm would have eliminated a transfer beam that cost $50,000 to construct. But by the time we were engaged, the DA was approved and the column position was fixed.

#### Constructability Issues

Architects design beautiful buildings. That is their job. But they do not always consider how those buildings will be constructed. A cantilevered slab that looks elegant on a render may require temporary propping that costs more than the slab itself. A curved wall that looks stunning in the foyer may need formwork that takes a week to build.

When the structural engineer is involved early, we can flag these issues before the design is committed. Often there is a simple alternative that achieves the same architectural effect with a fraction of the construction complexity.

#### Coordination Gaps

On a development project, the structural drawings interact with every other discipline: architectural, mechanical, electrical, hydraulic, and fire engineering. When the structural design is developed in isolation, coordination gaps are inevitable.

These gaps show up during construction as clashes between services and structure, insufficient floor zone depths, and penetrations through critical structural elements. Each clash generates an RFI, and each RFI takes time and money to resolve.

What Early Involvement Looks Like

Early engineering involvement means engaging the structural engineer at the concept or schematic design stage, before the DA submission. At this stage, the engineer can:

1. Advise on the structural system most appropriate for the project
2. Review the column grid and suggest optimisations
3. Assess the basement depth and shoring implications
4. Identify constructability issues early enough to resolve them in the design
5. Coordinate with other disciplines to ensure the structural design accommodates services, fire compartmentation, and accessibility requirements
6. Provide preliminary cost guidance on the structural scope

Real Savings

Here are some examples of savings achieved through early engineering involvement:

• Basement depth reduction: By reviewing the car park layout at the concept stage, we identified that one fewer basement level could achieve the required parking numbers. This saved the developer approximately $800,000 in excavation, shoring, and basement construction costs.

• Structural system optimisation: On a 12-level residential project, early involvement allowed us to recommend a load-bearing wall system for the upper levels instead of a full concrete frame. The saving in concrete and formwork was over $200,000.

• Transfer beam elimination: By working with the architect to adjust the column grid at concept stage, we eliminated three major transfer beams from the design. The combined saving exceeded $150,000.

• Shoring methodology: Early geotechnical involvement allowed us to design a vertical cut solution instead of a propped shoring system, saving the builder four weeks of construction time and the associated preliminary costs.

The Investment

Early engineering involvement does not cost more. In fact, the design fees are typically the same whether the engineer is engaged at concept stage or construction documentation stage. The difference is that early engagement allows the engineer to add value rather than simply reacting to constraints.

The return on investment is overwhelming. For every dollar spent on early engineering input, the savings in construction cost and programme time are typically five to ten times greater.

Our Recommendation

Engage your structural engineer at the same time as your architect. Include them in the early design meetings. Let them review the concept plans before they become commitment plans. And listen to their advice on structural systems, construction methodology, and cost optimisation.

At ACSES Engineers, we actively seek early involvement because we know it produces better outcomes for everyone. The developer saves money. The builder has a constructable design. The architect's vision is realised efficiently. And the engineer can do their best work.

That is engineering as a philosophy. Not just designing structures that stand up, but contributing to projects that succeed.