OSB shear strength

Based on the formula in C. Donald Ahrens, Meteorology Today: Wind speed in miles per hour

multiplied by itself and then by 0.004 gives wind's pressure in pounds per square foot.

Case study

36' x 24' shed box house

12' height and 8' height shed roof

Wind speed: 50 mph ( 50 x 50 x 0.004 = 10 lbs/sq.ft. )

12' height wall wind load: 120 pound per feet

8' height wall wind load: 80 pound per feet

https://gyazo.com/b616bca88118536b00130acfb8977920

8' height wall get

80 pound per feet x 24' = 1920 pound

one corner get 960 pound

https://gyazo.com/e7e6b74f9e060ef86e486db8e33be302

a roof edge and a bottom edge of the one corner get 480 pounds

1/2" OSB (4" on boundary and 12" on studs nailing pattern ) vertical sheeting can hold 250 pound per sheet.

2 sheets of OSB on shear wall can hold 8' x 24' wall

https://gyazo.com/c44243cada00b0176fdc29bc9ee2049d