2015-6-25-bowstring-truss-part-2

Bowstring Truss Failures, Part 2: Repair Methods

DonanEngineering Commercial & Residential Roofing, Forensic Engineering, Structural Damage & Collapse

Have you checked out Bowstring Truss Failures, Part 1: Deficiencies & Failure Causes?   Typical Bowstring Truss Repair Methods Bowstring trusses can be retrofitted to remedy design problems and to increase the load capacity to meet the current code requirements. This is accomplished by first analyzing the trusses using frame analysis software with the current code-required loading and then upgrading …

2015-6-25-bowstring-truss-part-1

Bowstring Truss Failures, Part 1: Deficiencies & Failure Causes

DonanEngineering Commercial & Residential Roofing, Forensic Engineering, Structural Damage & Collapse

Introduction Wood bowstring trusses were used extensively in commercial buildings from the 1920s to the 1960s. Wood bowstring roof trusses provided long clear spans necessary in warehouse and industrial buildings. Many roofs supported by bowstring trusses are still in service today. Compared with other structural timber-truss types, bowstring trusses have exhibited more frequent structural problems. The structural deficiencies encountered are …