Unique floor jacking system for soundproofing

Actom-Mechanical-pouring-the-concrete-floating-floorThe Mason jack-up floor slab system, unique in South Africa, was used recently to soundproof the floors in two state-of-the-art TV studios built at the new Randburg headquarters of television production house Stark Studios. The mechanical jack-up system serves to establish a permanent air gap between the structural floor and floating floor of an internal space.

It is used in facilities such as production studios, conference rooms or laboratories where similar air-gap soundproofing is applied in the walls and ceilings to ensure that no external sound or vibration can penetrate the internal space.

 

Actom Mechanical Equipment’s Arnot product group manufactures the jack-up mounts and installed a total of 797 units for the two studios – 522 for the larger studio, which has a floor area of 768 m2, and 275 for the other studio with a 515 m2 floor area.

The Arnot team was subcontracted by Bastion Construction, the main contractor for the R80-million Stark Studios head office project. Arnot operations manager Trevor Davis, says, “There is no other system like it available in the country and the alternative soundproofing systems that are sometimes used for floors – usually consisting of solid timber laid between the structural floor and the floating floor – don’t come close to it in effectiveness.

“The 75 mm air gap that the Mason jacking system creates between the structural and floating floors has been shown to be as effective in keeping sound out as a 600 mm thick, solid inter-floor layer, which wouldn’t be very practical in modern buildings,” he adds.

In installation the jack-up mounts are placed at regular intervals on top of plastic sheeting laid across the entire surface of the structural floor. The plastic sheeting is used to isolate the floating and structural floors from each other, as they would otherwise bond together.

The steel reinforcing for the concrete floating floor is placed so that the reinforcing is supported on the jacks throughout – the housing of the jacks being designed with projecting supports for the reinforcing rods to rest on. The concrete is then poured, with care being taken to ensure that the upper portions of the jacks are left exposed.

Three or four weeks later, once the floating floor is cured, the jack-up mounts are progressively and gradually lifted, one row at a time, by a crew of workmen using T-spanners. The jacks are raised simultaneously, with one full turn of the T-spanners, before the team moves on to the next row – and this process is repeated across the whole floor. With each complete round of T-spanner turns the floating floor is raised by 2 mm. This process is repeated until the jacks are fully extended and the required air gap of 75 mm between the structural and floating floors is achieved.

 

 

 

concrete floors floating concrete floors flooring insulated flooring jack-up floor slab system mechanical systems sound insulation in floors soundproof floors soundproof studios
Previous story
keyboard_arrow_upQuality in motion
keyboard_arrow_downQuality in motion

The Vista Duo from Hillaldam Sliding Door Systems is the first bottom rolling hardware for even folding weatherproof aluminium doors

Next story
keyboard_arrow_upSupplying clean water to remote communities
keyboard_arrow_downSupplying clean water to remote communities

More than 1 200 PlayPump systems already installed in rural parts of South Africa, Mozambique, Lesotho, Swaziland and Zambia, are, with the power of children’s play, bringing clean water to about two million people. By 2010, the combined efforts of PlayPumps International  and the international organisations or individuals that fund the set-up of the PlayPump systems aim to have installed 4 000 pumps in 10 countries in Sub-Saharan Africa, making clean drinking water accessible to up to 10 million people. Expansion over the next few years will see PlayPump systems in Ethiopia, Kenya, Malawi, Tanzania, and Uganda.

keyboard_arrow_upEcophon Focus™ Ez ceiling tiles
keyboard_arrow_downEcophon Focus™ Ez ceiling tiles

Saint-Gobain Ecophon's new design ceiling tile with recessed visible grid is easily demountable.

keyboard_arrow_upGlobal parking solutions for revenue generation
keyboard_arrow_downGlobal parking solutions for revenue generation

Came Parkare South Africa provides a wide range of future-ready solutions to consolidate or improve revenue generation in your car park: Barcode and magnetic stripe tickets, licence plate recognition, payment through credit/debit cards, smartphones with NFC, pre-paid vouchers and online payments. Together with the ROI of the system, it is also important to make the […]

keyboard_arrow_upTshwane banana ripening facility chooses York YVWA chiller from Johnson Controls
keyboard_arrow_downTshwane banana ripening facility chooses York YVWA chiller from Johnson Controls

Bananas arrive green at the Banana Ripening Centre and are then palletised and stored in one of the 55 ripening chambers. Collection and distribution of the bananas is synchronised with the six-day ripening process, so it is crucial that the temperature is strictly controlled through the reliable and efficient YORK YVWA chillers.