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h1. Model description

* Create a new model from template:. Define as a simple span, 40m long, with steel girders cross-section.

* Release the bearing at the end abutment to achieve a simply supported condition.

* Define point, line, and area loads in separate [load cases|kb:Load case] as follows:
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** Point load: 10kN load applied at station 20, centered transversely centered.
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** LinealLine load: 1kN/m load applied between stations 15 and 25, centered transversely centered.
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** Area load: 0.1kN/m^2 load applied between stations 15 to 25 and across the width of the deck.
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These loads will all cause an effect equivalent to loading the bridge midspan with a 10kN point load

* Run the analysis and check the midspan moments. For point loading, the theoretical midspan moment is given as follows:

!Expression 1.PNG|align=center,border=0!

Plan, elevation, and section diagrams depicting load application are given in Figure 1:

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{center-text}Figure 1 - Load application diagrams{center-text}

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h1. Model Developmentdevelopment

h2. Define and apply loads

Use the "Loads > Loads - Point" command to define a new point load, as shown in Figure 2:

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!point loads 1.png|align=center,border=1!

{center-text}Figure 2 - Define point load{center-text}

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Use the "Bridge > Loads > Point Loads" command to assign the previously defined point loads:load, as shown in Figure 3:

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!point loads 2.png|align=center,border=1!

{center-text}Figure 3 - Assign point load{center-text}

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Using a similar approach as described above, define and apply linealline and area loads.

h1. Results

The moment diagrams below show that (Figures 4-6) depict the maximum midspan moment isexpected.
as
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!point load moment diagram.png|align=center,border=1!

{center-text}Figure 4 - Point load moment diagram{center-text}

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!lineal load moment diagram.png|align=center,border=1!

{center-text}Figure 5 - Line load moment diagram{center-text}

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!area loads moment diagram.png|align=center,border=1!

{center-text}Figure 6 - Area load moment diagram{center-text}

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h1. Attachments

* [SAP2000 model |Applying point, line, and area loads to bridge objects^CSI Bridge model.zip] (Zippedzipped ModelSDB filesfile)