Designing and sizing a siphonic roof drainage system is a specialized discipline. System performance depends on correct hydraulic calculations, coordination with other disciplines and proper installation.
With Akasison, you will receive design support, calculation tools and technical assistance as part of our comprehensive solution. From the initial planning stage through to construction and handover, Akasison provides engineering expertise, digital tools and practical support to ensure that siphonic roof drainage systems are engineered correctly and perform as intended on site.
Expert support throughout your project
Aliaxis provides expert support for Akasison projects at every stage: design, engineering, construction and handover. This structured approach helps to reduce risk, avoid rework and improve predictability during execution.
Early involvement and design responsibility
We support projects from the initial stages by defining the hydraulic concept and system layout. Where required, this includes providing technical input for permit and approval processes. Early involvement helps prevent design changes later in the project.
Detailed system design by specialist engineers
Pipe sizing is carried out by Akasison's dedicated engineers using specialist software and ensuring compliance with international standards. This includes hydraulic calculations, system balancing, layout development, and the preparation of technical documentation, such as drawings, 3D models, isometrics, and bills of materials.
Support during construction
During the construction phase, we are available to answer any questions related to the design or installation. This includes off-site support and, where applicable, on-site assistance to address changes, installation conditions or technical queries that arise during the execution phase.
Clear handover and documentation
At handover, we provide clear system documentation to support correct installation, warranty conditions and long-term system reliability.
Industry-leading siphonic drainage software - Akasison Autoplanner
How does Akasison AutoPlanner differ from other siphonic roof drainage calculation tools?
Developed by Aliaxis, Akasison Autoplanner is a cloud-based application that combines hydraulic knowledge, engineering expertise, practical installation insights and requirements outlines in various international standards. The result is safe, optimized and constructible system that can be installed on site with confidence.
What Autoplanner delivers:
- Hydraulic calculations compliant with international siphonic roof drainage standards (EN12056, DIN1986, BS8490, ASPE45, ASNZS3500, NEN3215, CPT3600, UIPC, NBC, IPC)
- An optimized and balanced system design that supports correct priming behavior and full-bore flow
- Automatically generated 3D Revit models that are detailed, parametric and editable enabling meaningful interdisciplinary coordination (clash detection & resolution)
- CAD-compatible outputs for projects that do not use BIM
- Accurate bill of materials (BOM) to support cost control and logistics planning
- Clear documentation, including hydraulic reports, drawings and isometric views
Check out the demo in our online 3D viewer!
Design or site changes?
Akasison Autoplanner supports fast design iterations when layouts or project conditions change, helping to reduce engineering lead times and coordination issues during the project. In case of last-minute, on-site adjustments, Akasison AutoPlanner can quickly re-validate the expected system performance.
Designed for different BIM maturity levels
Akasison Autoplanner supports both BIM and non-BIM workflows. Outputs can be adapted to suit the digital maturity of the project and customer preferences, ensuring clear communication and coordination across disciplines.
Want to calculate own projects?
Our technical support team are dedicated to supporting your projects and carry years of experience sizing systems so that they are safe, compliant and constructible. However, if you want to run siphonic roof drainage system calculation on your own, we provide access to our tool- Akasison AutoPlanner and give you necessary training and support.
Technical documentation and digital resources
To support specification, design, installation and approval, Aliaxis provides a comprehensive set of technical documentation and digital resources for Akasison. All information is structured to help designers, engineers and contractors work efficiently and with confidence throughout the project lifecycle.
BIM files and digital design resources
We provide virtual equivalents of our physical products.
Available resources include:
- Revit families
- Revit project template
This digital library was developed based on years of Revit-modelling expertise to ensure it is usable and offers seamless 3D design experience for those who want to generate 3D designs of siphonic roof drainage system themselves.
Note that our specialized tool Akasison AutoPlanner generates high-quality, fully sized and detailed Revit models automatically, so manual 3D modelling may not be necessary for your project.
Technical documentation
All essential documentation is available in one place to support correct design and execution.
Available documentation includes:
- Technical manuals and system documentation
- Installation guidelines
- Hydraulic and design information
- Certificates and third party approvals
- Environmental documentation, where applicable
Clear and consistent documentation is key to correct installation and long term system performance.
Warranty information
Akasison siphonic roof drainage systems are covered by a 15 year warranty, [MS22.1]subject to clearly defined conditions.
- Correct system design and hydraulic calculation
- Use of Akasison components as specified in the system design
- Installation in accordance with Akasison installation guidelines
- Accurate and complete project input data
The warranty reflects Akasison’s commitment to quality, design responsibility and proven system performance. Full warranty conditions are available within the technical documentation.
Interested in Akasison for your project?
Mariska Graveland
mariska.graveland@aliaxis.com
