Estimation of Inelastic Interstorey Drift for OSB/Gypsum Sheathed Cold-Formed Steel Structures under Collapse Level Earthquakes

Table 1

Summary of the test matrix.

Name	Wall size	Studs				Sheathing (one side/the other side)
	Width × height (m × m)	Studs (h × b × a × t) (mm)	Tracks (h × b × t) (mm)	Yield stress (MPa)	Spacing (mm)
BX-A	4 × 3	C89 × 44.5 × 12 × 1.2	U92 × 40 × 1.2	280	500	OSB^a/gypsum^b
BX-B	2 × 3
BX-2A	2.4 × 3	C89 × 44.5 × 12 × 1.0	U92 × 40 × 1.2	320	600	Gypsum^b/none
BX-2B
BX-2C
BX-4A						OSB^a/none
BX-4B
BX-4C
BX-6						OSB^a/gypsum^b
BX-7
BX-8	2.4 × 3.3					Gypsum^b/none
BX-9						OSB^a/none
WA-2	2.4 × 3	C140 × 41 × 14 × 1.6	U141 × 34 × 1.6	330	400	OSB^a/none
WA-4						CSB^b/none
W-SO75		C75 × 38 × 8 × 0.75	U78 × 43 × 0.75	550	600	OSB^a/none
W-SF75						CFB^a/none
W-OP75						OSB^a/gypsum^b
HS-90-1		C90 × 40 × 14 × 1.2	U93 × 35 × 1.2	280		OSB^a/gypsum^b
HS-140-1		C140 × 40 × 14 × 1.5	U144 × 35 × 1.5			Gypsum^b/gypsum^b

^a9 mm thickness; ^b12 mm thickness; OSB: oriented strand board; gypsum: gypsum plaster board; CSB: calcium silicate board; CFB: cement fiberboard.