Structural calculationPrice on requestWhat is assessed?
A flat roof carries its own structure and various loads. New insulation, a green roof, installations or solar panels can change the situation.
A structural assessment also requires information about spans, supports and existing deformation. Drainage is coordinated with the architectural design.
What data is needed?
The following information can be used to prepare the assessment. The structural engineer determines whether additional research is necessary.
- Beam or slab data
- Roof build-up
- Positions of drains and installations
- New weights and plans
What do you receive?
Record the exact delivery in the quotation. Depending on your project and assignment, this involves:
- Assessment of the roof construction
- Possible reinforcements
- Principles for the proposed adjustment
Discuss who will take care of the architectural development, supplier details and any temporary support. In this way, the components involved are coordinated.
Materials and drawings
The choice of materials and connections follow from the design. Read more about Structural timber and the difference between a architectural drawing and a construction drawing.
How does the process proceed?
You describe your project and share the available data. The assignment, any additional information and planning are then coordinated. Check it out complete step-by-step plan for all phases.
What does your assignment cover?
A flat roof assessment needs the full roof build-up, including insulation, finishes and equipment. Mention a green roof or solar panels from the outset. Coordinate the structural assessment with falls and drainage in the architectural design.
Can I already order material?
Order structural parts based on the coordinated and current design data. A preliminary estimate is not a complete basis for this.
Is a site visit necessary?
That depends on the project and the available information. Sometimes drawings and photos are sufficient for the inventory; sometimes an admission or additional examination is necessary.
What happens if my plan changes?
Report changes before they are implemented. The structural engineer assesses whether calculations and drawings need to be adjusted.
From data to a detailed plan
Checklist for your application
| Given | What you prepare |
|---|---|
| Beam or slab data | Gather the most recent available data and identify what is missing. |
| Roof build-up | Gather the most recent available data and identify what is missing. |
| Positions of drains and installations | Gather the most recent available data and identify what is missing. |
| New weights and plans | Gather the most recent available data and identify what is missing. |
- Describe your complete construction plan.
Assess beams or slabs, roof structure and all planned additions in context.
- Discuss missing data.
The structural engineer determines which site survey or additional information is required for the agreed assessment.
- Record order and delivery.
Agree on the calculated parts, drawings, price and planning.
- Coordinate the design with the construction work.
Use the current documents and have relevant changes reviewed before they are implemented.
Frequently asked questions about flat roofs
When do I have my existing flat roof assessed?
In the event of a planned change in weight, use or construction, a targeted assessment is useful. Consider extra insulation, installations, solar panels, a green roof or an opening. Describe the existing and desired structure and indicate known deformations.
Why do drainage and construction belong to the same consultation?
Water that accumulates on a roof can cause additional strain. Drainage and any emergency facilities must therefore be coordinated with the architectural and structural design. The suitable solution depends on the complete roof structure and geometry.
Related structural topics
Your project location
Provide the building address and share available drawings and photographs. Discuss whether a site survey is needed and which travel or investigation costs form part of the commission.