Slide 3 of 45
- If uplift forces exceed the weight, additional resistance must be applied.
- This is done by installing hold-downs.
- There are no prescriptive requirements in the Building Code for the installation of hold-downs.
- The architect or engineer specifies when and where the installation of a hold-down is required.
- Hold-downs are typically required on both ends of a shear wall and are connected to the end stud or post of the shear wall.
- This is because an earthquake shakes a shear wall back and forth and the shear wall will experience uplift forces on both ends, one end at a time.
- The added post is better able to resist the tension load from uplift and the simultaneous compression load at the opposite end of the shear wall.