TW85
Tidewall TW Z series. Extruded vinyl, Z profile.
| Property | Imperial | Metric |
|---|---|---|
| Width | 18 in | 457 mm |
| Height | 10 in | 254 mm |
| Thickness | 0.44 in | 11.18 mm |
| Weight of wall | 5.55 lb/ft² | 27.1 kg/m² |
| Moment of inertia | 166.3 in⁴ per ft of wall | 22,709 cm⁴ per m of wall |
| Elastic section modulus | 31.9 in³ per ft of wall | 1,717 cm³ per m of wall |
Allowable moment 8,653 ft-lb/ft; ultimate moment 17,306 ft-lb/ft; E = 380,000 psi; UV-stabilized exterior-grade rigid PVC. Wall weight is calculated from Tidewall's weight per foot and section width. Tidewall prints the weight as 8.33 lb/ft and 12.06 kg/m, which do not agree exactly; the lb/ft value is used.
Source: Tidewall website, TW85 technical data (tidewall.com), Oct 2026. Confirm properties with the manufacturer before design.