The trafficable roof, used where the roof is a terrace. It matches the non-trafficable roof thermally at U 0.21 W/m²K and carries the additional mass of the walking surface at 130 kg/m², still 73% below the traditional equivalent.
Trafficable roof / terrace
570 mm
Total thickness · D.09
The layer schedule for this detail is being transcribed from the construction details catalogue and signed off by the technical department. The total thickness above is confirmed. Contact the technical department for the current build-up on a live scheme.
Layer schedule
The layer schedule for D.09 is being transcribed from the construction details catalogue and signed off by the technical department. The confirmed total thickness is 570 mm.
Performance
| Property | Value | Basis |
|---|---|---|
| U-value, bridging corrected | 0.21 W/m²K | EN ISO 6946, one-dimensional steady state, with a +15% bridging correction for horizontal elements, applied as an engineering estimate. |
| Self-weight | 130 kg/m² | Mass estimate from the layers and dimensions in the source document. |
| Traditional equivalent | 481 kg/m² | Derived from the published self-weight and reduction percentage. |
| Weight reduction | 73 % | Self-weight against the traditional equivalent build-up. |
| Fire resistance (EI) | Test programme in progress — contact technical department | Awaiting laboratory test report |
| Airborne sound reduction (R_A) | Test programme in progress — contact technical department | Awaiting laboratory test report |
| Structural span | Test programme in progress — contact technical departmentSpan selection tables in preparation | Awaiting laboratory test report |
| Watertightness | Test programme in progress — contact technical department | Awaiting laboratory test report |
U-values are one-dimensional steady-state calculations to EN ISO 6946. Bridging correction is applied as an engineering estimate: +20% for walls, +15% for horizontal elements. 2D numerical analysis to EN ISO 10211 is in progress; values will be updated on completion.
Not yet stated
- EIFire resistance · in test
- R_AAirborne sound reduction · in test
- spanStructural span · in test
- watertightnessWatertightness · in test
Test programme in progress — contact technical department