J. Inadequate Shear Walls
|
III. Structural Problems and Strengthening
Methods J. Inadequate Shear Walls |
Shear walls are usually constructed using plywood panels
nailed to wood studs. Many older homes do not have shear walls,
but rely on let-in bracing or diagonal blocking. They are
inadequate. In some instances, your engineer may recommend shear
walls be added in the main portions of the house. If shear walls
are to be added in areas where the wall finish is less important
or where studs are exposed---for example, the garage, closets,
and basement areas---the panels can be applied directly on studs.
If shear walls need to be added in existing lath and plaster
walls, the plaster and lath must be removed to expose the studs.
A common approach is to use 3/8" plywood and 3/8"
gypsum wallboard to bring a new finish level to the existing wall
surface. In older houses where there is plaster decoration, there
placement of these specialty decorations will add expense.
Typical Cost: $50/lf of 8'-high wall