EWPAA Structural Plywood and LVL Design Manual - Engineered ...

ELEVATIONFIGURE 9.12: Shows shear flows and chord forcesΣMFΣFF= 27.2X3.6 -27.2 x 3.6=4.8= 20.4kN= 27.2= 6.8kNResulting shear flows within sub-diaphragm :xAucA20.4FucFx 4.8 = 0A =0upper section : v ulower section : v L= 20.4/1.2= 17 kN/m= 6.8/1.2= 5.7 kN/mAlthough the anchorage force at A, directly under the vertical offset is small in this instance (0.12kN) it willbe increased by :(25 – 8 x 2)x1.2/5 = 2.2 kN i.e. the 9 kN shear force acting on the 1.2 x 5 m offset along theline OB. This, of course, excludes any restoring influence due to the weight of the offset wall.9.10 Shearwall Design - Panel ResponseIn general a shearwall is a cantilever like structure which is required to resist two components of load dueto the application of a lateral force, i.e.:• rigid body overturning;• a pure shear load.Of course the above definition excludes the possibility of bending of the wall due to lateral wind forces.109