Seismic and Blast Engineering

Certain buildings and their services require design for seismic events (earthquakes) or blast events (caused by terrorism or local explosions). Such facilities often house critical infrastructure like power stations and government buildings. Although the duration and nature of seismic and blast events can differ significantly, the underlying theory and engineering remain the same. Mason boasts extensive experience in seismic engineering, developed through decades of experience and comprehensive testing. We also have established systems in place to manage sensitive projects.

Our two primary objectives are:

Correctly engineered restraint systems can significantly reduce the risk of pressurised systems cracking or bursting, heavy plant equipment becoming displaced and failing, or heavy equipment falling during an event, which could cause injury or death to users. Safety is always the primary concern in engineering for seismic or blast events, and international building codes require greater measures for more populated buildings. Properly engineered systems can also drastically reduce the time it takes for a building to recover.

Significant acceleration forces can occur during a seismic or blast event. This can be exacerbated if the system is placed on anti-vibration mounts. But, if the system is correctly designed, anti-vibration mounts combined with seismic limit stops or snubber can provide a cushioning effect. This can save a significant amount of cost because the supported system does not have to be ‘ruggedised’ against these high forces or proven via expensive test on a shaker table to demonstrate compliance. Below is a video of Mason spring mounts with in-built seismic restraints restraining and cushioning a pump and motor set, the intent is to reduce the forces down to normal transportation loads, to which off the shelf equipment is normally designed.

We can carry out static and dynamic analysis in full compliance with international building codes. We can design and supply support and restraint systems for entire systems and can combine with vibration control and thermal expansion and provide full site and design support. We would be happy to discuss how we could support your project.