Use the Define Bridge Section Data - Box Girder - Advanced form to define a deck section parametrically.
Cross-Section. The display area at the top of the form shows a cross section of the template deck section. This is a static display and will not update if any changes are made in the Section Data area of the form. The labels used in this graphic correspond to the parenthetic labeling for the items in the Section Data spreadsheet (e.g., Girder Web Thickness {t3}; Left Exterior Girder Angle {Theta1}; Right Exterior Girder Angle {Theta2}; and so forth).
Sketch. The sketch to the right of the cross-cross section will update when changes are made on the form.
Note: If Section is Not Legal appears in red type, review the data in the Section Data spreadsheet area. Click the ? (question mark) to display a message box indicating the problem with the data.
Do Snap check box. When this check box is checked, the mouse pointer will snap to the joints when the mouse is moved over the sketch display. When the check box is unchecked, the mouse pointer can be moved anywhere on the display. The coordinates for the location of the pointer will display in the X and Y display boxes.
Show Section Details button. Click this button to display the Bridge Section Points for {Bridge Section Name} form. When that form displays, the data on that form is not editable, but the display area at the top of that form will update to reflect the changes made in the Section Data area. Note that the Show Section Details button does not appear on the form when the form is accessed from the Bridge Object Data form, as described in Method 2 below.
Modify/Show Girder Force Output Locations button. Click this button to display the Bridge Girder Force Output Location form. Use the form to specify the vertical and horizontal location for reporting force results.
Modify/Show Properties Materials and Frame Sects button. Click the Materials button to access the Define Materials form. Click the Frame Sects button to access the Frame Properties form. Use the forms to define new properties, or review and modify existing properties, as necessary, for the materials and frame sections used for the deck section.
Section Data. This area of the form displays the default geometry for the deck section. Click in a cell in the spreadsheet to type a revised value for that item.
General Data
Bridge Section Name. Use the default section name or supply a revised name.
Material Property. Identifies the material property.
Number of Interior Girders. Specifies the number of interior girders. Click in the cell to type a revised value.
Total Width. Specifies the total width of the deck section. Click in the cell to type a revised value.
Base Depth. Specifies the total depth of the deck section. Click in the cell to type a revised value.
Constant Girder Spacing? Specify if girder spacing is consistent (Yes) or inconsistent (No).Click in the cell to change the designation. If spacing is inconsistent, a Grid Spacing Data area that can be used to specify the grid spacing will be added to the form.
Constant Girder and Fillet Dimensions? Specify if girder and fillet dimensions are consistent (Yes) or inconsistent (No).Click in the cell to change the designation. If the dimensions are inconsistent, additional rows for data entry will be added to the Girder Orientation and Thickness area of the form. Use the additional Value cells to specify the girder and fillet dimensions.
Constant Slab Thickness? Specify if the slab thickness is consistent (Yes) or inconsistent (No).Click in the cell to change the designation. If the slab thickness is inconsistent, additional rows for data entry will be added to the Slab Thickness area of the form. Use the additional Value cells to specify the thickness variations.
Constant Depth Across Section? Specify if the depth of a section is consistent (Yes) or inconsistent (No).Click in the cell to change the designation.
Keep Girders Vertical When Superelevate? (Area & Solid Models). This option applies to area and solid models only. Specify if girders should remain vertical when the structure is superelevated.
Girder Orientation and Thickness
Girder Web Thickness (t3). Specifies the thickness of the girder web. Click in the cell to type a revised value.
Left Exterior Girder Angle (Theta1) and Right Exterior Girder Angle (Theta2). Specifies left and right exterior girder angle. Click in the cell to type a revised value.
Specify Radius at Top of Ext. Girder (f11 thru f14)? If Yes is selected, a Radius Data area and additional rows are added to the form to allow specification of the radius of the top of the exterior girder. After a value is specified for the Radius at Top of Exterior Girder, the program calculates the values for the corresponding fillet horizontal and vertical dimension data (i.e., f11 thru f14).
Specify Radius of Outside Bottom of Ext. Girder (f15 thru f18)? If Yes is selected, a Radius Data area and additional rows are added to the form to allow specification of the radius of the top of the exterior girder. After a value is specified for the Radius at Outside Bottom of Exterior Girder, the program calculates the values for the corresponding fillet horizontal and vertical dimension data (i.e., f15 thru f18).
Specify Radius at Inside Bottom of Ext. Girder (f7 thru f10)? If Yes is selected, a Radius Data area and additional rows are added to the form to allow specification of the radius of the top of the exterior girder. After a value is specified for the Radius at Inside Bottom of Exterior Girder, the program calculates the values for the corresponding fillet horizontal and vertical dimension data (i.e., f7 thru f10).
Slab Thickness
Top Slab Thickness (t1). Specifies the thickness of the top slab. Click in the cell to type a revised value.
Bottom Slab Thickness (t2). Specifies the thickness of the bottom slab. Click in the cell to type a revised value.
Fillet Horizontal Dimension Data. Use the f1 through f18 Horizontal Dimension cells to specify the horizontal dimensions of the fillet at the specified location. As noted above, the locations of the various data are shown on the cross-section at the top of the form. Click in the cell to type a revised value.
Fillet Vertical Dimension Data. Use the f1 through f18 Vertical Dimension cells to specify the vertical dimensions of the fillet at the specified location. As noted above, the locations of the various data are shown on the cross-section at the top of the form. Click in the cell to type a revised value.
Left Overhang Data
Left Overhang Length (L1). Specifies the entire length of the overhang on the left side of the deck section. Click in the cell to type a revised value.
Left Overhang Outer Thickness (t5). Specifies the outer thickness of the left overhang. Click in the cell to type a revised value.
Right Overhang Data
Right Overhang Length (L2). Specifies the entire length of the overhang on the right side of the deck section. Click in the cell to type a revised value.
Right Overhang Outer Thickness (t6). Specifies the outer thickness of the right overhang. Click in the cell to type a revised value.
Live Load Curb Locations. Use these options to locate the curb relative to the left and right edges of the bridge and to specify the width of the median as measured from the left edge of the bridge. Similarly, the Distance to the Centerline of the Median Live Load Curb is always measured from the left edge of the bridge.
Insertion Point Location. Specify the X and Y offsets from the reference point to the insertion point. Click in the cell to type a revised value.
Design Data. Use these options to specify the distance of the slab cut line from the top and bottom of the section.
See Also
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Access the Define Bridge Section Data - Box Girder - Advanced form as follows:
Method 1:
Alternatively, click the Components > Superstructure Item > Deck Sections > New command to display the Select Bridge Deck Section Type form identified in the preceding bullet items. Method 2: Note that when this method is used, the parameters on the form cannot be modified.
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