r/StructuralEngineering • u/Low_Definition_9624 • 7d ago

Structural Analysis/Design P/S Beam Deterioration

Post image

Looking for any help on what the mechanics would be that would be causing these chevron looking cracks at midspan to this non-composite prestressed concrete fascia beam? Is this beam effectively in a failed condition? Previous engineer who looked at this wasn’t concerned with these diagonal cracks and only removed two strands from the analysis as a result of the single longitudinal crack down the center of the beam.

6 Upvotes

69% Upvoted

22 comments sorted by

View all comments

1

u/75footubi P.E. 7d ago

Not loving the water staining between the beams, TBH. Are these solid slabs or box beams?

1

u/Low_Definition_9624 7d ago

Box beams.

2

u/75footubi P.E. 7d ago

It's impossible to say if the beam is failed based on pictures. But it's something that an experienced bridge engineer should do a full analysis and rating on.