Steel I Girder Stress Summary Table [SIG]

For this object to be utilized, the model must have completed the analysis and successfully passed the design process, as this object will use the data obtained from the analysis and extract the results of the design.

This report cannot be accessed through the DOCS button in the left sidebar, as it is not like other reports and requires the successful completion of analysis and design before it can be generated. To access the Steel I Girder Stress Summary Table: image-20241122-122017.png image-20241127-103445.png

General

Girder: Specify the type of girder to be used in the report.

Noncomposite Result Cases: This parameter can be used to define the noncomposite result cases. Stress values will be calculated based on the noncomposite section and its properties, with extracted results, and the forces to be specified by the chosen result cases. In addition to the load cases, minimum and maximum factor inputs are collected for each. The results obtained from each load case will then be multiplied by these factors.

Long-Term Composite Result Cases: This parameter can be used to specify the long-term composite result cases. For Long-Term Composite Result Cases, typical load cases include DC2 (deck self-weight) and DW (wearing surface or future overlay). In positive bending regions, stresses are calculated using the steel girder and the concrete deck acting compositely without reinforcement. In negative bending regions, the deck is excluded and stresses are based on the steel girder with reinforcement only. The results from the selected load cases are multiplied by the user-defined minimum and maximum factors.

Short-Term Composite Result Cases: This parameter can be used to define the short-term composite result cases. For Short-Term Composite Result Cases, typical load cases include LL (Live Load), WS (Wind Load on Structure), WL (Wind Load on Live Load), BR (Braking), and CE (Centrifugal). In positive bending, the section used for stresses includes the steel girder and the concrete deck without reinforcement, representing full composite behavior under live load. In negative bending, the deck is excluded, and the steel girder with reinforcement is used to determine stresses. These results are scaled by the defined factors and displayed in the stress table.

Deck Reinforcement

Input Data Preference [Override Deck Rebar/Use Deck Rebar]: For deck rebar to be used in girder code checks, users are provided with two options. The code checks can either be conducted using the modeled deck rebar or with new rebar definitions.

If the input data preference is defined with the option 'Override Deck Rebar,' the parameters listed below can be used to define the rebars for code checks. Otherwise, if the input data preference is defined with the option 'Use Deck Rebar,' the parameters below will not be applicable.

Lumped Top Reinforcement Area within the Effective Width: This parameter can be used to specify the lumped reinforcement area within the effective width when overriding deck rebar.

Distance from the Centerline of Top Bars to the Top of the Deck: This parameter can be used to define the distance from the centerline of the top reinforcement bars to the top of the deck.

Lumped Bottom Reinforcement Area within the Effective Width: This parameter can be used to specify the lumped reinforcement area within the effective width for the bottom deck rebar.

Distance from the Centerline of Bottom Bars to the Bottom of the Deck: This parameter can be used to define the distance from the centerline of the bottom reinforcement bars to the bottom of the deck.

Deck Rebar Material: This parameter can be used to specify the material used for the deck rebars.

Concrete Creep Adjustment Factor: This parameter can be used to define the adjustment factor for concrete creep in calculations.

Overrides

Override Effective Deck Width[Yes/No]: The Override Effective Deck Width parameter provides the option to manually specify the effective deck width instead of relying on the automatically calculated value. When set to “YES,” it allows engineers to enter a user-defined deck width that may better represent the actual structural condition, such as when the composite action is partial or the geometry is irregular. When left as “NO,” the system computes the value automatically.

Effective Deck Width: The Effective Deck Width parameter defines the deck width used in composite section calculations when the override option is enabled.

Settings

Stress at Every nth Station: For the results to be presented based on the stress values along the girders, several results must be extracted, and the definitions of the stations for which the results will be extracted can be specified by this parameter.

Additional Stations: This parameter can be used to specify any additional stations for which results will be extracted or analyzed, in addition to those defined by the Stress at Every nth Station parameter.

Include Haunch for Section Properties? [Yes/No]: For stress values, the haunch can either be included or excluded from the section properties, and this can be specified by this parameter.

Modular Ratio Comp. Method [EsbyEc/User Input]: The modular ratio can be computed either by dividing the modular ratio of steel by that of concrete or by using a user-defined input. This parameter allows users to specify the method for calculating the modular ratio.

Modular Ratio: If the Modular Ratio Comp. Method is defined with the option 'User Input,' a modular ratio can be defined manually. Otherwise, this parameter will be marked as not applicable (N/A).

Ignored Insertion Points for Span Positioning: This parameter can be used to specify any insertion points that should be ignored for span positioning.

Show Computation Details [Yes/No]: This parameter allows users to specify whether to display computation details.

Show Unfactored Moment Graph [Yes/No]: This parameter allows users to specify whether to display the Unfactored Moment Graph in the report. When set to 'Yes', the graph will show the unfactored moments for each load case individually as well as the combined total of all load cases.

Steel I-Girder Stress Summary Report Includes:

  1. Stress Range Graph: A graph illustrating the calculated stress values of the top and bottom flanges, based on the input load cases and factors. image-20251021-133454.png

  2. Unfactored Moment Graph: A graph showing the unfactored major axis bending moments for all input load cases. image-20251021-133429.png

  3. Tension Zone Table: A table that summarizes the stress values shown in the Stress Range Graph and specifies which flange is in the tension stress zone. image-20251021-133602.png

  4. Notation Table : A notation table that provides the meaning of each symbol used in the stress table. image-20251021-134938.png

  5. Stress Results Table: Stress results for specified cases, including Non-Composite Result Cases Long-Term Composite Result Cases Short-Term Composite Result Cases. These results are presented for the stations specified under the Settings tab. Following the collection of minimum and maximum factors, these cases now yield four distinct stress tables:

  6. Max Factor Max Result

  7. Min Factor Max Result

  8. Max Factor Min Result

  9. Min Factor Min ResultEach table displays the corresponding stress value for both the top and bottom flanges. Furthermore, section dimensions and section properties are also presented on a station-by-station basis. image-20251021-134132.png

  10. Stress Computation Detail : This section is included in the report when the 'Show Computation Detail' input under the Settings tab is set to 'YES'. It shows the calculation details for the stresses at every station. However, if a refined analysis is performed (i.e., stress calculations at every one- or two-foot interval), this will significantly increase the time required to compile the detailed report. It is recommended to keep this setting as 'NO' for refined analysis. image-20251021-135119.png

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