Miscellaneous Steel Design Example
Composite section?
Commentary for 1: For a composite section, shear connectors are required to develop composite action between the steel girder and the concrete deck.
Design Shear Connectors S6.10.7.4 Design Step 5.1
Commentary for 2: Design includes: Shear connector details (type, length, diameter, transverse spacing, cover, penetration, and pitch), Design for fatigue resistance (S6.10.7.4.2), Check for strength limit state (positive and negative flexure regions) (S6.10.7.4.4)
Design Bearing Stiffeners S6.10.8.2 Design Step 5.2
Commentary for 3: Design includes: Determine required locations (abutments and interior supports), Select stiffener sizes and arrangement, Compute projecting width and effective section, Check bearing resistance, Check axial resistance, Check slenderness requirements (S6.9.3), Check nominal compressive resistance (S6.9.2.1 and S6.9.4.1)
Design Welded Connections S6.13.3 Design Step 5.3
Commentary for 4: Design includes: Determine required locations, Determine weld type, Compute factored resistance (tension, compression, and shear), Check effective area (required and minimum), Check minimum effective length requirements
Are diaphragms or cross frames required?
Commentary for 5: To determine the need for diaphragms or cross frames, refer to S6.7.4.1
Design Cross-frames S6.7.4 Design Step 5.4
Commentary for 6: Design includes: Obtain required locations and spacing (determined during girder design), Design cross frames over supports and intermediate cross frames, Check transfer of lateral wind loads, Check stability of girder compression flanges during erection, Check distribution of vertical loads applied to structure, Design cross frame members, Design connections
Is lateral bracing required?
Commentary for 7: To determine the need for lateral bracing, refer to S6.7.5.1
Design Lateral Bracing S6.7.5 Design Step 5.5
Commentary for 8: Design includes: Check transfer of lateral wind loads, Check control of deformation during erection and placement of deck, Design bracing members, Design connections
Compute Girder Camber S6.7.2 Design Step 5.6
Commentary for 9: Compute the following camber components: Camber due to dead load of structural steel, Camber due to dead load of concrete deck, Camber due to superimposed dead load, Camber due to vertical profile, Residual camber (if any), Total camber
Return to Main Flowchart
Flow:
1 if yes go to 2
1 if no go to 3
2 go to 3
3 go to 4
4 go to 5
5 if yes go to 6
5 if no go to 7
6 go to 7
7 if yes go to 8
7 if no go to 9
8 go to 9
9 go to 10
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