WS AASHTO [SPIG]

Geometry

Span Height Variation [Yes/No]: Yes applies a span-by-span height variation when calculating wind pressures; No uses a single height for the whole bridge.

Structural Objects And Pressure Parameters: Table of structural objects (girders, diaphragms, etc.) and the wind-pressure parameters that apply to them.

Substructure Objects and Pressure Parameters: Table of substructure objects (piers, bents) and the wind-pressure parameters applied to each.

Superstructure Objects and Pressure Parameters: Table of superstructure objects (deck, barriers) and the wind-pressure parameters applied to each.

Wind Parameters

[NAME_ALIAS:V]Strength III Design Wind Speed (mph): Design wind speed (mph) used for the AASHTO Strength III limit state. Typically 115 mph per AASHTO 3.8.1.1.

Surface Roughness/Wind Exposure Category [B/C/D]: AASHTO wind exposure category selector per AASHTO 3.8.1.1: B for urban/suburban, C for open terrain, D for flat unobstructed areas and coastal waters.

Analysis Option [Generate Stages for All Load Combinations/Generate Strength III and Strength V Apply Coefficients]: Controls how the library object builds staged load cases — either a single combination stage (option 0) or separate combination stages with the relevant AASHTO coefficients applied (option 1).

Generate Wind Load Report [Yes/No]: When Yes, a detailed wind-load report is produced during analysis.

Load Case Generators

Generate Strength III Load Cases: [Yes/No]: Enable Strength III wind-load cases.

Generate Strength V Load Cases: [Yes/No]: Enable Strength V wind-load cases.

Generate Service I Load Cases: [Yes/No]: Enable Service I wind-load cases.

Generate Service IV Load Cases: [Yes/No]: Enable Service IV wind-load cases.

Generate 0 Degrees Angle Load Cases: [Yes/No]: Enable wind load cases at 0-degree skew.

Generate 15 Degrees Angle Load Cases: [Yes/No]: Enable wind load cases at 15-degree skew.

Generate 30 Degrees Angle Load Cases: [Yes/No]: Enable wind load cases at 30-degree skew.

Generate 45 Degrees Angle Load Cases: [Yes/No]: Enable wind load cases at 45-degree skew.

Generate 60 Degrees Angle Load Cases: [Yes/No]: Enable wind load cases at 60-degree skew.