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Panel Type [InteriorPanel/EndPanel]: The terms "end panel" and "interior panel" are used to describe the sections of a steel girder plate that are positioned at the ends and interior sections of the girder, respectively, as depicted in the accompanying figure. The interior panels comprise the remaining segments of the girder that lie between the end panels.
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Res. Result Case To Find Points of Permanent Load Contraflexure:As per According to AASHTO 6.11.1.1, the effective span can be determined differently for cases involving simple spans and continuous spans. For continuous spans, the effective span length should be calculated based on the points of contraflexure of the major axis bending moment under permanent loads, or by considering both simple supports and points of contraflexure. Following this approach, it is necessary to specify the result extraction case composed of that represents the permanent loads to determine identify the points of contraflexure and, consequentlysubsequently, the effective spans. This parameter can be is used to specify define the result extraction case that will to be applied in calculations associated with related to contraflexure.
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Reinforcement
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Input Data Preference [Override Deck Rebar/Use Deck Rebar]: When
Deck Rebar Material: Enter a single material for both top and bottom reinforcement.
If “Lumped” selectedFor 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:
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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
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Dist from the CL of top bars to deck bottom
If “Detailed” selected
Long. Deck Rebar Spacing(Top Layer)
Long. Deck Rebar Spacing(Bottom Layer)
Long. Deck Rebar Diameter(Top Layer)
Long. Deck Rebar Diameter(Bottom Layer)
Trans. Deck Rebar Diameter(Top Layer)
Trans. Deck Rebar Diameter(Bottom Layer)
Clear Cover(Top)
Clear Cover(Bottom)
Concrete creep adjustment factor: 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: To incorporate the effects of concrete creep in stress calculations that involve the application of long-term loads to the composite section in regions of negative flexure, the area of the longitudinal reinforcement can be conservatively adjusted by dividing it by the "Concrete creep adjustment factor." The concrete is assumed to transfer the force from the longitudinal deck steel to the rest of the cross-section, with concrete creep acting to reduce that force over time. It is important to note that assuming a value greater than 1 is a conservative approach and is not mandated by the AASHTO LRFD BDS. As such, it is not recommended to use this assumption in normal design practice. When using the default value of 1, the reinforcement area will remain unaltered.
Has Long. Stiffener [NO/YES]: Select "Yes" if the girder code check station is located between two transverse stiffeners.
Has Trans. Stiffener [NO/YES]: Select "Yes" if there is a longitudinal stiffener that passes through the girder code check station.
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Stiffener Spacing Computation [Use Cross Frame Spacing/User Input]: As shown in the figure below, each cross frame is usually connected to a connection stiffener. If no additional intermediate stiffener is present, the user may simply use the cross frame spacing as the stiffener spacing. However, if there are additional stiffeners at the code check station, the user must manually enter the transverse stiffener spacing.
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Transverse Stiffener Spacing: The spacing between the transverse stiffeners, as shown in the illustration below.
Long. stiff-comp. flange: The distance from the compression flange to the longitudinal stiffener.
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Overrides
Override Effective Deck Width [YES/NO]: The effective width of the deck can either be taken as modeled or overridden by new values based on the definition of this parameter. If the option ‘NO’ is selected, the effective width of the deck will be used as modeled. If the option ‘YES’ is selected, the effective width of the deck can be overridden by the value specified in the parameter ‘Effective Deck Width’.
Effective Deck Width: If Override Effective Deck Width is set to ‘YES’, this parameter can be used to specify the deck width to override the modeled deck's effective width. Otherwise, this parameter will default to ‘NO’.