Strong Floors

Zoom image: 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

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