TW70
Tidewall TW Z series. Extruded vinyl, Z profile.
| Property | Imperial | Metric |
|---|---|---|
| Width | 18 in | 457 mm |
| Height | 9 in | 229 mm |
| Thickness | 0.33 in | 8.38 mm |
| Weight of wall | 3.97 lb/ft² | 19.4 kg/m² |
| Moment of inertia | 87.9 in⁴ per ft of wall | 12,008 cm⁴ per m of wall |
| Elastic section modulus | 19.5 in³ per ft of wall | 1,050 cm³ per m of wall |
Allowable moment 5,292 ft-lb/ft; ultimate moment 10,584 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.
Source: Tidewall website, TW70 technical data (tidewall.com), Oct 2026. Confirm properties with the manufacturer before design.