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Home » Our Services » Structural Calculations
At Twinfix, we understand that accurate structural calculations are essential when specifying canopies, walkways, shelters, and roof glazing systems. Architects, specifiers, and contractors rely on detailed engineering assessments to ensure projects are safe, durable, and fully compliant. With over 35 years of experience, Twinfix combines technical expertise with practical knowledge to provide comprehensive structural support for every project.
Twinfix works closely with specifiers to ensure that all products are correctly documented, engineered, and verified. By providing clear, accurate structural information, we help specifiers integrate our systems confidently into projects, giving them assurance that the chosen canopy or roof glazing solution will meet safety, compliance, and performance requirements.
A key aspect of canopy and rooflight design is wind load assessment. Twinfix carries out detailed wind calculations for each structure, considering location, exposure, canopy size, height, and surrounding terrain. These calculations ensure that aluminium frames, polycarbonate glazing, and Multi-Link-Panel Non-Fragile roof glazing systems perform safely in all conditions. Accurate wind assessment is particularly important for exposed sites, rail stations, schools, healthcare estates, and commercial buildings.
All structural calculations are carried out in line with British Standards (BS EN 1991-1-4 for wind actions), CDM regulations, and HSE guidance. For roof glazing, including the Multi-Link-Panel Non-Fragile system, Class B non-fragile ratings are verified under ACR[M]001:2019, providing assurance for maintenance and cleaning access. Reports can be supplied as part of the specification pack, giving specifiers confidence that the design is fully compliant and engineered to perform.
We provide specifiers with detailed technical data, including frame sizes and load capacities, maximum spans and cantilever dimensions, anchorage and support requirements, thermal expansion allowances, as well as glazing type, thickness and impact performance, alongside maintenance and inspection guidance. This ensures projects can be integrated seamlessly, reducing risk and avoiding delays on site.
Our in-house design, manufacturing, and installation teams ensure that calculations are translated directly into buildable solutions. Modular pre-assembled systems, such as the Multi-Link-Panel Non-Fragile roof glazing, allow fast, safe installation while maintaining the calculated performance.
With Twinfix, specifiers can be confident that every canopy, walkway, shelter, and roof glazing system is engineered to perform, fully compliant, and built to last.
Whether you’re in the early stages of planning or ready to move forward, our experienced team is here to support you every step of the way. From initial design advice and product selection through to technical guidance and installation planning, we’ll help you find the right canopy or roof glazing solution for your project. Simply share your requirements with us, and our experts will provide tailored recommendations to suit your site, budget, and timescales—ensuring a smooth process from concept to completion.
Twinfix partners with organisations across a wide range of sectors, delivering high-performance canopy and roof glazing solutions that enhance buildings and create safe, practical covered spaces. Our involvement begins at concept stage, supporting architects, specifiers and consultants with technical guidance and compliant, buildable designs, before working closely with principal contractors, estates teams and facilities managers to ensure coordinated manufacture and professional installation across new build and refurbishment projects, including complex live environments. We have extensive experience supporting public infrastructure and community settings such as transport, education and healthcare, as well as collaborating with local authorities and modular construction providers, providing durable, adaptable systems that integrate seamlessly with modern construction methods and deliver long-term value.
Our accreditations reflect our commitment to maintaining the highest standards of quality, safety and compliance, ensuring we consistently deliver robust, reliable solutions that meet rigorous industry requirements.
