60x80x18 Steel Building Kit | Rigid Frame I-Beam | Commercial GradeJuly 22, 2026By 0 Comments 60’ x 80’ x 18’ | Clear Span I-Beam Construction. Roof Pitch: 1:12. ✔️ Roof & Wall Steel Panels. 📐 Building Specifications. ✔️ Primary & Secondary Framing. ⚠️ Final engineering is based onjob site location, exposure, and local building codes. Share This