MINIMIZE DAMAGE, MAXIMIZE SAFETY
Design your fastenings to resist seismic forces
Structures designed for seismic scenarios to the state-of-the-art standards ensure a high degree of structural integrity & occupant safety.
With earthquakes placing huge demands on the resistance & connections of a building’s structural & non-structural elements, appropriately designed fastenings using post-installed anchors must ensure robust performance that do not compromise both structural integrity or occupant safety.
Earthquakes are much more common than we realise. They happen every day all over the world.
Not only do they cause loss of life and serious injury, but they can also do great damage to buildings and the economy.
All this can be limited by good seismic construction design and specification.
Click the source to view live earthquake occurrences:
Share of Damage resulting from a seismic event in terms of cost
Reinforced concrete building
Hospitals
Importance Level - 4
Hotels
Importance Level - 3
Offices
Importance Level - 3
Source: Taghavi S. and Miranda E.
How anchors behave in an earthquake
Seismic conditions significantly change the behaviour of anchors, compared to static conditions.
How Hilti anchors comply with seismic codes
According to the state-of-the-art AS 5216:2021, designing fastenings to resist seismic actions requires use of anchors qualified to categories C1 & C2.
Hilti produces a wide range of anchors qualified to the latest European Assessment Documents (EADs) for both C1 & C2 categories, enabling the designer to undertake a compliant design.
RELEVANCE IN AUSTRALIA
The earthquake hazard map in AS1170-4:2018 shows the acceleration coefficient for different locations across Australia. Seismic design is relevant in large parts of the country, represented on the map.
SEISMIC PERFORMANCE RELEVANCE TO ANCHOR CONNECTIONS
In Australia, seismic category C2 is required in most cases for structural elements due to the ground acceleration zones mentioned earlier. Seismic category C2 is also required for non-structural elements in buildings with high importance and high ground acceleration zones.
Whereas for buildings with a low importance class in low ground acceleration zones seismic category C1 is required.
HILTI ANCHORING RANGE WITH SEISMIC APPROVALS
HOW DO I DESIGN ANCHORS FOR SEISMIC AREAS
At Hilti our engineering team can help you design your anchor systems – just contact your local office for more details. Or, you can use our Hilti PROFIS Engineering software. This includes code compliant Hilti products in 2D and 3D with relevant documentation and specifications.
Our PROFIS Engineering software performs seismic calculations according to AS5216:2021 Appendix F. This gives three solutions for anchoring base plates in seismic areas:
Capacity design - The anchorage is designed for the force corresponding to the yield of a ductile component, or if lower, the maximum force that can be transferred by the fixture or the attached element.
Elastic design - The fastening is designed for the maximum load assuming an elastic behaviour of the fastening and of the structure.
Design with requirements for anchor ductility - This design for ductile steel failure requires an anchor classified as ductile. This approach is also applicable only for the tension component and some provisions need to be observed to ensure that the cause of failure is steel failure.
We’ve also added our own Hilti research results into PROFIS Engineering software, so that you can find solutions, which go beyond AS5216:2021 Appendix F.
Seismic Design of anchors made easy with our all in one connection design software, PROFIS Engineering.