SZ-21
Shoreline Steel Intermediate Heavyweight series. Cold formed steel, Z profile.
| Property | Imperial | Metric |
|---|---|---|
| Thickness | 0.35 in | 8.89 mm |
| Weight of wall | 20.3 lb/ft² | 99.1 kg/m² |
| Moment of inertia | 86 in⁴ per ft of wall | 11,744 cm⁴ per m of wall |
| Elastic section modulus | 18.1 in³ per ft of wall | 973 cm³ per m of wall |
Steel grade: ASTM A572 Gr 50, ASTM A328.
Width and height are not listed in Shoreline's table; see Shoreline's downloadable drawings.
Source: Shoreline Steel website, sheet piling specifications (shorelinesteel.com), Oct 2026, Intermediate Heavyweight table. Confirm properties with the manufacturer before design.