Rigid Moment-Resisting Frame Walls: The Frame Method of Analysis - The Analysis of Irregular Shaped Structures - page 497

F i g u r e 14.10 Wall element section properties.
not always possible. If splices must occur, the sheathing should be spliced near the
points of inflection. This is so because the bending moment is low or near zero at those
locations and only the flanges are available to resist the bending due to the web joint. In
layout 2, the header and sill lengths are greater than 8 ft, which requires the sheathing
to be spliced at one or two locations. The layout shown assumes that the sheathing
starts at the outside edges of the wall. All butt joints in the web should be spliced to
transmit shear. For joints closer than 24″, the contribution of the webs should be ignored
in calculating the net moment of inertia. If webs are located on each side of the wall, the
joints in the web should be staggered a minimum of 24″, in which case only one web
needs to be disregarded.
Lumber Flanges
Flanges can consist of graded lumber, glu-lam beams, LVL, or other engineered mate-
rial. Butt joints in flanges should be spaced a minimum of 30 times the lamination thick-
ness in adjoining laminations, and at least 10 times the lamination thickness in
nonadjoining laminations. It is always better to have continuous flange members, no
joints, whenever possible.