In this guide
Use this material to examine your own work. Confirm current requirements, forms and dates with IStructE before applying.
The minimum standard is Experience for both Incorporated-Member and Chartered Member.
What strong and weak evidence look like
Look for
- A quantity you reduced, with the design decision that reduced it.
- An embodied carbon comparison you carried out, with the assumptions that mattered.
- Reuse or retention of an existing structure, and the assessment that made it defensible.
- A whole-life argument you made, whether it won or lost.
- An honest account of where a project made things worse.
Watch for
- The project's sustainability strategy, offered as your evidence.
- Listing UN Sustainable Development Goals with no decision attached.
- A carbon saving claimed with no idea of the baseline.
- Sustainability described entirely as site waste recycling.
Portfolio items that tend to work here
Suggestions, not a required list. What matters is that the item is yours, that it is annotated, and that it demonstrates the standard rather than the subject.
Questions to ask yourself
- What did I do differently because of sustainability?
If the answer is nothing, the evidence is not there yet, and it is better to find that out early.
- Where is the carbon in what I designed?
Reviewers often start here. Not knowing suggests the analysis was somebody else's.
- What did my project make worse?
The objective is honest about negative impacts. Candidates who only claim benefit sound unconsidered.
The same objective, in different kinds of work
| Setting | What the evidence tends to look like |
|---|---|
| New build | Reducing a frame or a foundation through better information or a revised load path, with the saving quantified. |
| Existing structures | Making retention defensible through assessment rather than assertion. |
| Infrastructure | Extending an asset's life through intervention rather than replacement. |
Illustrative. The objectives are written to be met in a range of ways by anyone practising as a structural engineer.
How reviewers tend to approach this objective
- Asking what you personally changed, not what the project claimed.
- Asking where the carbon sits in your structure.
- Asking how you would argue a low-carbon option against a cost target.
- Asking about the difference between embodied and operational carbon.
There is a bank of original practice questions in the interview question bank, filterable by objective and by grade.
Official sources
Selected publisher pages were rechecked in September 2026. Other source records were last checked in July 2026. Open the latest official document before relying on a requirement.