(UB)
School of Engineering and Applied Sciences
School of Engineering and Applied Sciences
Structural Engineering and Earthquake Simulation Laboratory

Strong Floors

Testing Area 1 floor hole pattern. Map of Strong Floor in Testing Area 1

Map of Strong Floor in Testing Area 1

There are two strong floors, located in both Testing Area 1 and 2. The hole patterns are different in both testing areas. Inside Testing Area 2 are two reaction walls, one to allow for hybrid testing with our shake tables and the other that is aligned with the strong floor for static and dynamic testing.

Floor Layout (Testing Area 2)

Map of strong floor in Testing Area 2. Map of Strong Floor

Map of Strong Floor in Testing Area 2

The test floor is a reinforced concrete box girder with dimensions of 79 ft. (24m) long, 39 ft. (11.8m) wide. The thickness of the top test floor slab is 24 in. (60cm). Below is a breakdown of the capacity data. Please refer to the map layout of the strong floor at the top of the page to correspond with the line numbers outlined in table.

Note: The rows for "Allowable load per strip along NUMBERED lines (based on moment)"  and "Allowable concentrated load PER HOLE (based on moment)" govern the design.

Allowable load per string along numbered lines (based on shear)

Position Lines Max Force Shear Strength Clear Span
ft   kip/ft kN/ft kN/mn ton/m ton/m ft
1 A E F J K O P T 120 544 1784 182 172 9.00
3 B D G I L N Q S 157 712 2333 238 172 9.0
5 C H M R 226 1028 3370 343 172 9.0

Allowable load per strip along numbered lines (based on moment)

Position Lines Max Force   Clear Span
ft   kip/ft kN/ft kN/m ton/m ton/m ft
1 A E F J K O P T 89 407 1333 136 122 9.00
3 B D G I L N Q S 38 174 571 58 122 900
5 C H M R 32 146 480 49 122 9.00

Allowable concentrated load PER HOLE (based on shear strength)

Position Lines Max Force Shear Strength Clear Span
ft   kip kN kN ton ton/m ft
1 A E F J K O P T 239 1088 1088 111 172 9.00
3 B D G I L N Q S 313 1423 1423 145 172 9.00
5 C H M R 452 2055 2055 210 172 9.00

Allowable concentrated load PER HOLE (based on punching shear)

Position Lines Max Force   Gross Span
ft   kip kN kN ton kips ft
1 A E F J K O P T 182 826 826 84 182 10.00

Allowable concentrated load PER HOLE (based on moment)

Position Lines Max Force Moment Strength Gross Span
ft   kip kN kN ton ton-m/m ft
1 A E F J K O P T 179 813 813 83 122 10.00
3 B D G I L N Q S 77 349 349 36 122 10.00
5 C H M R 64 293 293 30 122 10.00

 

Allowable moment per strip due to load along ALPHABETICAL lines

Max Force   Gross Span
kip-in/ft kip-ft/ft kN-m/ft ton-m/m ton-m/m ft
3229 269 366 122 122 10.00