A structural frame is only as strong as its weakest joint.
There must be adequate fasteners at sill, plate, and ridge to ensure a safe building.
Fasteners must resist loads from any direction—a snow load acts downward, but a wind load can act in any direction.
Sills should be bolted to the foundation and metal connectors used to secure the wall frame to the sill.
Use metal connectors at the plate and ridge, also.
Do not rely on nails for structural joints in wood.