Guide
Between-Floor Structures for Multi-Storey Homes
What needs to be coordinated where one storey meets another in a steel-frame home or vertical extension.
A between-floor structure carries loads while creating the boundary between occupied levels. Its depth and arrangement affect stairs, openings, services, ceilings and the feel of the rooms above and below.
The correct build-up is established through project-specific architecture and engineering.
The coordinated floor zone
The structural arrangement is developed alongside room layouts and openings. Service routes and ceiling requirements also need space within or around this zone.
- Spans and support points
- Stair and service openings
- Floor and ceiling build-ups
- Connections to walls and frame
Multi-storey and extension projects
For new multi-storey homes, the levels can be coordinated from the outset. An addition above an existing building also requires verified information about the existing structure and the proposed load path.
Related services
Relevant projects
Practical questions
Is the same solution suitable for every project?
No. Site conditions, the architectural brief, approvals and the existing structure all affect the appropriate solution. Project-specific design and engineering are essential.
Can services pass through the floor zone?
Routes can be coordinated during design, but their position must respect the engineered structure and the wider building specification.
What information is useful at the start?
Share the plot or property location, available drawings or surveys, and a clear outline of what you want to achieve. Pelasgos can then identify the questions that need professional review.
Next step
Plan your project
Share your site, property or early brief and Pelasgos will help identify the appropriate next steps.