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Grand Casino Bayview Parking Structure
100 block of Beach Blvd, Biloxi, Mississippi

Location: N 30.39271, W 88.86441

This five-story (six-level) hotel parking structure across the street from the Gulf waterfront suffered partial collapse of several bays of its second-level deck. The collapsed bays were located at the southeastern corner of the structure. Since peak winds were from the south and southeast as the storm passed, the south façade and southeast corner of the facility would have been most affected by the buffeting of waves. Furthermore, across the street from the east Gulf waves would have had access through an open parking structure across the street. The west end is in the lee of a hotel building, and would have been somewhat sheltered from wave action. Visual evidence suggests that buoyant uplift of the double-tees of the deck, possibly increased by air pockets trapped between the deck, or upward vertical impact of wave tops beneath the deck, led to negative-bending fracture of the beams from the internal prestress moment.

Figure 1 shows the facility in question. Figure 2 shows the cast-in-place concrete parking structure across the street, and an open area to the east of that, which would have permitted wave passage to the facility. Some of the collapsed deck beams appear in the foreground of Figure 3. An S-shaped crack pattern characterized the web of the collapsed deck beams is shown in Figure 4.

Figure 1: The southeast corner of the precast concrete garage. Spandrel beams in the third and fourth bays of the south façade were knocked off and lay on the ground in front of the facility.

Photo: K. Porter (for MCEER)

Figure 2: The cast-in-place concrete garage across the street appeared to have suffered no structural damage, and allowed waves to pass through to the precast concrete garage examined here.

Photo: K. Porter (for MCEER)

Figure 3: Collapsed portion of the second-floor deck.

Photo: K. Porter (for MCEER)

Figure 4: S-shaped cracking in the web of a collapsed deck girder. The S is lowest at the prestress strands.

Photo: K. Porter (for MCEER)

 

 

 

 

 

 

 

 

 

 

 

 


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