HomeHelp and adviceBuild up your troubles in your old kitbag

Build up your troubles in your old kitbag

Adam Fox retells the interesting story of Norm Mason and the invention of the efficient jack-up floating floor system.

WHAT do you do with an elephant in the room? When most of us face this question, we’re only talking about a metaphorical elephant. For engineers at Mason Industries however, it was the prospect of a live elephant in a TV studio that helped inspire the invention of the jack-up floating floor.

The largest male elephants can weigh up to 15,000lbs so having an actual, live elephant in the room can create a significant engineering problem, if you need to isolate the impact or vibration that such a large animal might transmit through the building.

In the early ‘60s, engineers set out to solve precisely this kind of problem. Columbia Broadcasting System, better known as CBS, one of the big three commercial TV broadcasters in the US, was looking to install a new studio that was capable of handling a room full of live elephants. The studio needed to be versatile and installed quickly, so the acoustic consultants working on the project contacted Norm Mason.

Norm, who dedicated his life to acoustic engineering, developed the concept of a jack-up floating floor. This was Mason’s original idea and, although never patented, the design formed the industry’s template for this efficient and swift construction method. Attempts at copying the system by others in the industry are commonplace.

The successful renovation of the studios was completed in six weeks in 1962. This was the genesis of the jack-up floating floor. Perhaps not surprisingly, CBS has remained a loyal customer of Mason Industries ever since.

Floating floors: the basics
A floating floor is a purpose-built floor designed to limit the transmission of noise and vibration. The name ‘floating’ is derived from the fact there are no rigid or solid connections between the floating floor and the structural floor beneath it. It’s through these connections that vibration has the potential to travel.

Although there are many floating floor types, they fall into two main categories. Reinforced concrete jack-up floating floors are systems constructed on the slab and then raised, or jacked up, to the desired height.

Timber or formwork floating floors usually involve multiple layers of board, supported by low profile rubber or spring elements. The latter system has been around longer, but is more costly in resources and time and carries greater acoustic risk, hence the development of the jack-up system by Norm, a proponent of improving through engineering.

Today, floating floors are used for many purposes and the jack-up system has been continually evolved and improved to our current design. They’re recommended where there’s a need to reduce the transmission of noise, vibration, or impact.

For example, a gym being built in a residential building, recording studios built near a tube line or, in rare circumstances, an elephant in the room.

Mason UK is proud to be keeping Norm Mason’s engineering legacy alive. What do you do with an elephant in the room? We can’t tell you how to deal with a metaphorical elephant, but if you want to limit the vibration or impact caused by live elephants in a TV studio, we recommend installing a jack-up floating floor.
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