Wall Forces Considering Sloping Framing

Wall (resultant) forces (axial force, shear force, and overturning moment) are calculated to consider the slope of both the top and bottom of shear walls. As shown in the following figure, RAM Frame determines the internal nodal forces in the wall. These nodal forces are used to determine the wall forces as follows:

Sign Conventions for Column Member Forces.

Wall Forces with Sloping Edges

Wall Member Forces

Wall Shear Force = F₁ + F₂

Equation 3 - 4

Wall Axial Force = F₃ + F₄

Equation 3 - 5

Wall Moment = F_{1} d_{L} + F_{2} d_{R} + M_{1} + M_{2} + (F_{3} - F_{4}) \frac{w_{L}}{2}

Equation 3 - 6

Note: The wall overturning moment is taken around point O which is at the average height of nodes K and L.