trisobuild cr roof system tata steel construction curved roof

The Trisobuild® CR system is a tried and tested assembly with a through fixed trapezoidal outer sheet which can self-curve around a range of radii. The system is specified with an apex sheet long enough to ensure that the end lap of the profile or roof light is below the 4 degree pitch of the curve.

Designing the roof and using Trisobuild® CR within this radius range allows the specifier to optimise cost and provide an attractive low profile roof, with the confidence that all detailing has been third-party assessed.




Table below assumes radius of roof is after designed deflection.

Radius (m) 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110
Apex sheet
length required
for end lap at
5.59 6.28 6.98 7.68 8.38 9.08 9.77 10.47 11.17 11.87 12.57 13.27 13.96 14.66 15.36

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