Holdown (holdown, hold-down, or hold down) or tie-down in structural engineering refers to the steel device or hardware that is installed at the end of a plywood shear wall. At the bottom, the hold down is connected to the concrete foundation or structural slab by an embedded or epoxied anchor bolt.
Contents
- 1 What is the purpose of a hold down?
- 2 Do I need hold downs?
- 3 Where are hold downs located?
- 4 What is a hold down clamp?
- 5 What does hold down mean in construction?
- 6 How many Holdfasts do you need?
- 7 What held down?
- 8 What is a hold down in surfing?
- 9 What is used to tie down house framing to foundation?
- 10 What are the advantages of wood frame construction?
- 11 What is a shear wall in a building?
What is the purpose of a hold down?
The main purpose of hold downs are to secure the wood stud walls in the structure from dislocation during seismic shaking and wind.
Do I need hold downs?
Hold-downs Since we cannot allow walls to overturn, we must install anchors to hold them down to the structural elements below. The word “hold-down” (hyphenated or as one word) highlights the purpose. In some cases even where the overturning moment does not equal the resisting moment, hold-downs are required.
Where are hold downs located?
Hold-downs are typically called for in pairs, located, for instance, at each end of a shear wall or on both sides of a window or door where the shear wall is interrupted by the opening (see Figure 1).
What is a hold down clamp?
Hold-down pipe clamps are used in applications where you would like toeither 1.) anchor the pipe in position or 2.) permit axial movement of the pipe. Slide plates, such as PTFE, 25% glass filled or graphite, can be incorporated into the design to reduce the friction between the pipe and clamp.
What does hold down mean in construction?
Holdown (holdown, hold-down, or hold down) or tie-down in structural engineering refers to the steel device or hardware that is installed at the end of a plywood shear wall. At the bottom, the hold down is connected to the concrete foundation or structural slab by an embedded or epoxied anchor bolt.
How many Holdfasts do you need?
Once refreshed by the idea of holdfasts, it’s tempting to want to over do it. But generally we’ll only need one. Two tops. In terms of priority, I’d sooner have one holdfast, than the most fancy tail vice.
What held down?
Definition of hold down (Entry 2 of 2) transitive verb. 1: to keep within limits hold the noise down. 2: to assume or have responsibility for holding down two jobs.
What is a hold down in surfing?
The average wave hold downs range between five and eight seconds in small waves, and 12 seconds in head-high plus waves. So, if you can hold your breath for 20 seconds, there’s plenty of time left for you to be comfortable. The trick is to minimize oxygen consumption and keep cool.
What is used to tie down house framing to foundation?
In order to begin with a solid home foundation, the sill plates need to be anchored to the concrete slab, which is generally done by the use of anchor bolts or metal straps.
What are the advantages of wood frame construction?
When constructed and built correctly, large timber frame construction projects are strong and durable. They are resistant to rot and decay, requiring a high moisture content before they would rot or be susceptible to insects. Some of the benefits include:
- Building Time.
- Cost.
- Strength.
- Sustainability.
What is a shear wall in a building?
shear wall, In building construction, a rigid vertical diaphragm capable of transferring lateral forces from exterior walls, floors, and roofs to the ground foundation in a direction parallel to their planes. These forces can literally tear (shear) a building apart.
