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eng.plywood-shear-wall Calculator
Calculates plywood shear wall capacity from panel grade, nailing schedule, and hold-down forces using APA design values. Shear wall capacity is primarily governed by nail spacing at panel edges — reducing nail spacing from 6\
Inputs
Shear Force Kn
Push or pull (N). F = ma. Net force determines acceleration. Account for all forces including gravity and friction.
Wall Height M
Vertical measurement. For health calculators, typically standing height without shoes.
Shear Capacity Kn M
Maximum throughput or storage. Operating near 100% capacity typically increases failures and wait times.
Number Of Walls
Count of items or occurrences.
Results
factor of safety FOS
Strength / applied load. A safety factor of 2.0 means the structure can handle twice the design load before failure. Buildings: 1.5–3. Lifting equipment: 4–6.
shear force per wall (kN)
Internal force acting parallel to the cross-section (N). Governs design of short, heavily loaded beams and connections. Maximum shear is usually at the supports.
shear per meter (kN/m)
Sample size or count used in the calculation.
capacity check
A pass/fail verification against the applicable code, standard, or threshold.
typical plywood capacity
Reference formula or conversion factor shown for context.