Fire-Rated Door Substitution in a Lagos Hotel
A 90-room hotel in Lagos is at finishes stage. The specification requires 60-minute fire-rated timber doorsets to guest rooms and 120-minute doorsets to stair cores, with test evidence to EN 1634-1 or BS 476: Part 22 and third-party certification of the door, frame, ironmongery, and intumescent seals as a system. The contractor proposes a local flush door with intumescent strips and a one-page 'fire certificate' from a fabricator, claiming a saving of ₦18 million and four weeks. The client's representative says the local certificate is 'good enough for Nigeria' and asks the architect to approve a substitution before the next payment certificate. The architect has not seen the fabricator's test report, and the door leaf thickness is 40 mm against the specified 54 mm. The doors are on the critical path for the fire alarm commissioning.
1. Evaluate the proposed substitution against the specification and the fire safety objective.
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The substitution cannot be approved on the evidence presented. A fire-rated doorset is a tested assembly, not a door leaf with added strips. The test must cover the leaf, frame, hinges, closers, locks, intumescent seals, and gaps, and it must demonstrate the required 60- or 120-minute integrity and, where required, insulation. A one-page fabricator certificate is not equivalent to a test report from an accredited laboratory to EN 1634-1 or BS 476: Part 22, and there is no third-party certification. The 40 mm leaf against the specified 54 mm is a material reduction in section and likely outside the tested construction. The architect should also check the field of application: a test on a different leaf, frame, or seal configuration may not cover the proposed doorset. The fire safety objective is life safety and protected escape, so the absence of evidence is a rejection, not a matter of taste.
2. What should the architect do with the contractor's request and the client's pressure?
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Issue a written non-conformance report and request the full test report, third-party certification, manufacturer's installation instructions, and details of the proposed assembly. If the contractor cannot produce evidence that the complete doorset achieves 60 or 120 minutes, reject the substitution and require compliance with the specification. Do not approve it in the payment certificate or allow installation to proceed on a 'subject to evidence' basis. Explain to the client, in writing, that 'good enough for Nigeria' is not a technical standard and that the National Building Code and fire safety requirements demand demonstrated performance. Offer a compliant alternative: a tested local or imported doorset with valid certification, even if it costs more or takes longer. Record the cost and time consequences and require a formal variation if the client wishes to pursue a compliant alternative.
3. Explain the architect's liability if a fire occurs after approving the substitution.
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If the architect approves an untested or non-compliant doorset and a fire spreads through the building, she may face claims in contract and tort for professional negligence, because she knew the specification required tested assemblies and approved a material departure without evidence. The client, occupants, or insurers could allege that the architect's approval caused or worsened the loss. Her professional indemnity insurer may decline cover for an approval outside the specification or for a deliberate disregard of fire safety. She could also face disciplinary action under the ARCON code for incompetence or misconduct, and possibly regulatory or criminal consequences under fire safety legislation. The risk is heightened because the doors are on the critical path for fire alarm commissioning and the building is a hotel with sleeping occupants. The architect should therefore document the rejection and never rely on the client's assurance as a substitute for test evidence.