Structural calculationPrice on requestWhat is assessed?
Raising the roof ridge changes the roof geometry and structural behaviour. The structural engineer assesses the new roof structure and the elements to which it connects.
The structural cross-section, dimensions and chosen materials must be clear. Also discuss the temporary situation during the opening of the roof.
What data is needed?
The following information can be used to prepare the assessment. The structural engineer determines whether additional research is necessary.
- Existing roof cross-section
- Desired ridge and gutter heights
- Beam and wall data
- Desired material composition
What do you receive?
Record the exact delivery in the quotation. Depending on your project and assignment, this involves:
- Calculation of adapted roof construction
- Connection details
- Basic principles for possible reinforcement
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?
Raising the ridge changes roof geometry and load paths. Provide sections of the existing and proposed roof, including its support on the storey below. Ask which existing elements can remain and which connections need redesign.
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 |
|---|---|
| Existing roof cross-section | Gather the most recent available data and identify what is missing. |
| Desired ridge and gutter heights | Gather the most recent available data and identify what is missing. |
| Beam and wall data | Gather the most recent available data and identify what is missing. |
| Desired material composition | Gather the most recent available data and identify what is missing. |
- Describe your complete construction plan.
More usable attic space due to a modified roof, tailored to the existing home.
- Discuss missing data.
The structural engineer determines which recording or additional information is required for the agreed assessment.
- Record order and delivery.
Agree on the calculated parts, drawings, price and planning.
- Match the effect to the implementation.
Use the current documents and have relevant changes reviewed before they are implemented.
Frequently asked questions about ridge raising
What changes structurally with a ridge increase?
The roof geometry and possibly the supporting structure change. New parts and connections must connect to the existing home. Share cross-sections, desired heights and information about the existing roof, floors and support.
Is a prefab ridge increase possible without an assessment of the home?
The supplier can develop the delivered structure, but this does not automatically assess the connection to the existing home. Determine the division of tasks and ask which existing components require additional investigation.
Related constructive 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.