Restraining engineering systems
The first step is to determine earthquake demand and calculate the restraint forces for all linear, floor-mounted and suspended components (NZS 4219:2009 sections 3.6–3.8). The next step is to design a restraint system for each component that has sufficient capacity to resist seismic forces.
A typical restraint system consists of one or more anchor points, braces or supports and connections to the building component.
Common terminology when describing restraint systems. (Note that a real component would not usually be restrained using all of these restraints at once.)
In this section: