Page 1Prepared by: Mark Ferry
February 7, 1999
FE 444: Glulam Bridge Hand Calculations
Objective
Figure 1: Preliminary bridge design
Figure 2: HS 25-44 design vehicle
Figure 3: U80 overload vehicle
Define Variables
Step 1: Define basic configuration and design criteria
Step 2: Select beam combination symbol
Step 3: Compute deck dead load and dead load moment
Step 4: Determine live load moment
Step 5: Determine beam size based on bending
Step 5: Continued from Page 4
Step 5: Continued from Page 5
Step 5: Continued from Page 6
Step 5: Continued from Page 6
Step 6: Check live load deflection
Step 7: Check horizontal shear
Step 7: Continued from Page 8
Step 7: Continued from Page 9
Step 8: Determine bearing length and stresses
Step 8: Continued from Page 10
Step 8: Continued from Page 11
Step 9: Determine camber
Summary
