🕒 Timecodes
0:00 – Introduction
0:36 – Bridge Collapse Video
1:04 – What Went Wrong During Bridge Design?
1:42 – What Is Post-Tensioning?
2:34 – FIGG Engineering and Its Design
2:47 – A Critical Part of the FIU Bridge
3:01 – How to Design the Bridge Components (Rebars)?
3:46 – Common-Sense Design of the FIU Bridge
4:23 – Python Code – Shear Interface Resistance
4:50 – FIGG Design of FIU Bridge
5:20 – Cracks
6:20 – David Interviews Danny Pate in Borneo
8:15 – How to Improve the Bridge Design
9:25 – Simulation – FIU Bridge Collapse
9:37 – Simulation – FIU Bridge Collapse (Slowed Down)
📚 References
NTSB Report: PB2019-101363 / HAR-19/02
Pedestrian Bridge Collapse Over SW 8th Street, Miami, Florida
Wikipedia Article
SheerForce Engineering Blog
ScienceDirect – Failure Assessment Studies
Virtual Scenario Reproduction of FIU Collapse
Post-Tensioned RC Truss Bridge Collapse Study
🎵 Las Ketchup – The Ketchup Song (Asereje)
https://youtu.be/AMT698ArSfQ
c = 0.0 # ksi – cohesion factor
A_cv = 882 # in² – concrete area
mu = 1.0 # friction coefficient
A_vf = 17 # in² – shear reinforcement area
f_y = 60 # ksi – yield strength
P_c = 1233 # kips – compressive force
V_ni = c * A_cv + mu * (A_vf * f_y + P_c)
phi = 0.9
V_ri = phi * V_ni
print("Interface Shear Capacity =", V_ri, "kips")
#FIU #BridgeCollapse #Engineering #Simulation #ForensicAnalysis
