Stravifloor Jackup-R

Replaceable Jack-up Floating Floor System

Stravifloor Jackup-R is an isolated floating floor system using reinforced steel boxes cast into concrete and jacked up after the concrete has cured, to provide the required void depth. Once the concrete has cured, the isolated slab is raised off the structure to the required void depth, reducing the risk of acoustic bridging between the floating floor slab and the subfloor.

Stravifloor Jackup-R boxes allow for easy adjustment of the final floor height as well as replacement or inspection of isolators, should the use of the room or load conditions change in the future.

Stravifloor Jackup-R boxes have an extremely high load capacity and, therefore, allow for larger spans and fewer support points than traditional jack-up systems, to provide a cost-effective solution.

Main Characteristics

  • Available with either spring bearings or natural rubber pads

  • Natural frequency: ≥ 6 Hz (with elastomeric pads) or ≥ 2.5 Hz (with springs)
  • Product standard height: 100 mm, 150 mm and 200 mm
  • Minimum system height: 110 mm (with elastomeric pads) or 105 mm (with springs)
  • Minimum air gap: 10 mm (with elastomeric pads) or 5 mm (with springs)

Benefits

  • Specifiers

    For Specifiers

    Guaranteed Acoustical Performance
    • Floating floor fully decoupled from the substrate
    • Minimal support points compared to conventional floating floors
    • Same solution compatible with rubber bearings or springs and upgradable overtime if requirements change
    • Tested solution, including that slab openings do not affect airborne noise isolation
    • Insulation can be added within the void to reduce standing waves
    Reliable Long-term Performance
    • Inspectable bearings, facilitating maintenance without dismantling the entire system
    Design Flexibility & Adaptability to Architectural Constraints
    • Future-proof design with replaceable bearings being possible to  fine-tuned post-installation
    • High performance with a low build-up height, independent of bearing thickness
    Proven Performance (& Sustainability)
    • Acoustic laboratory test data available
    Easy to Specify
    • Easily integrate into project documentation and workflows with ready-to-use .dwg cross-sections, and BIM objects available online
    • Listed in external prediction tools, e.g., INSUL 
  • Installers

    For Contractors

    Reduced Installation Time and Labour Costs*
    • No formwork needed, limited number of components to be installed
    • Fast installation process with no need to fit unusual contours

    • Comprehensive installation manuals and shop drawings

      *Installation services available by CDM Stravitec team, or at least installation supervision

    Simplified Logistics and Site Handling (and Reduced Waste or/and Reduced Error Chance)
    • Low number of components, reducing transport costs, simplifies on-site logistics, and minimising parts
    Flexibility in Construction Sequencing and Site Use
    • Control over jacking-up timing, allowing late-stage changes and better alignment with construction sequencing
    • Can take high loads before the slab is raised (e.g. used as a storage area during construction)

Acoustical Test Data

This solution has been tested under the setup shown alongside, among others. If you’re looking for official test reports, editable test data (.csv), typical cross sections (.dwg),and BIM objects (.rvt) of this setup or results of other configurations, visit Stravi‑dB, our free online test library.

STRAVI-DB

  • Information Available to Download

Case Studies

  • Sloane Toronto

    Sloane

    The Sloane in Toronto features three towers up to 30 storeys, 750+ units, near Yorkdale Mall, with amenities like basketball and bowling.

  • Sky Zone

    Sky Zone - Trampoline Park - Al Kout Mall

    Sky Zone Al Kout Mall uses a Stravifloor Jackup-R floating floor tuned to 3.15 Hz, isolating trampoline vibrations and protecting the structure.

  • UC Irvine Medical Center

    University of California at Irvine Medical Center

    Stravifloor Jackup-R was used to allow the design team to build MRI imaging rooms on the main floor of the hospital, instead of below grade.

  • Google – Warsaw Hub

    Google – Warsaw Hub

    Google’s Warsaw HUB gym used Stravigym & Stravifloor systems to control vibrations, ensuring workouts 100m up don't disturb offices below.

  • Sports Hall Lingarnet Malmo

    Sports Hall Lingarnet Malmö

    Lingasrnet Sports Hall spans 3,500 m², with a 1,200 m² sports area. CDM Stravitec's Stravifloor Jackup-R ensures top acoustic insulation for optimal comfort.

  • Daikin Test Chambers

    Daikin Test Chambers

    Daikin established a development center headquarters in Ghent that features three anechoic acoustical test rooms. Noise isolation between them is essential.

  • DCU Future Tech Building

    DCU Future Tech Building

    A Stravifloor Jackup-R system was installed at DCU's Future Tech Building, enhancing acoustic performance in the strength room, supporting 3000+ STEM students.

  • Film Forum Movie Theater (exterior)

    Film Forum Movie Theater

    With Stravifloor Jackup boxes, we provided a vibration isolation design that helped Film Forum Movie Theater in New York City maximize the acoustic performance.

  • Penn Presbyterian Medical Center (exterior)

    Penn Presbyterian Hospital

    A Stravifloor Jackup-R with spring isolators in a concrete slab was installed to protect the sensitive medical equipment at Penn Presbyterian hospital.

  • Goldring Centre for High Performance Sport

    Goldring Centre

    A Stravifloor Jackup solution consisting of jack-up steel spring isolators was installed at the Goldring Centre for High Performance Sport in Toronto.

  • Elisabeth Center Antwerp

    Elisabeth Center Antwerp

    Situated above the main hall of the Elisabeth Center Antwerp, the technical area containing the HVAC units is decoupled by means of Stravifloor Jackup system.

  • Hospital da Luz Lisboa (exterior)

    Hospital da Luz Lisboa

    Approximately 2000 square meters of reinforced concrete Stravifloor Jackup floating floor isolate the HVAC & technical equipment at the Hospital da Luz Lisboa.

  • MediaCityUK Studio Block

    MediaCityUK Studio Block

    The studios at MediaCityUK Studio Block have Stravifloor Jackup concrete slabs to optimize sound insulation between noise producing and noise sensitive spaces.

  • Dissenso Studio (interior)

    Dissenso Studio

    At Dissenso Studio in São Paulo a Stravifloor Jackup floating floor with reinforced steel boxes cast into concrete guarantee top quality music recording.

  • MYRIAD by SANA Hotels (exterior)

    MYRIAD by SANA Hotels

    To isolate the technical rooms on the 2nd, 21st and 23rd floor of the MYRIAD by SANA Hotel, several Stravifloor Jackup concrete floating floors were installed.

  • 9 Marylebone Lane (exterior)

    9 Marylebone Lane

    9 Marylebone Lane is being supported by Stravibase VHS elastomeric bearings to cope with the structure-borne noise coming from the nearby Jubilee Subway Line.

  • Monte da Virgem RTP (studio)

    Monte da Virgem RTP

    Stravifloor Mat and Stravifloor Jackup systems in combination with Stravilink decoupling strips, guarantee effective noise isolation at Monte da Virgem RTP.

  • Data Center

    CRISOL Data Center

    To protect the IT equipment from vibrations caused by earthquakes, CRISOL Data Center El Corte Inglés decided to install a Stravifloor Jackup floating floor.

  • BAM Karaoke (interior)

    BAM Karaoke

    High-performance Stravifloor Jackup floating floors with spring supports isolate the seven karaoke rooms at BAM Karaoke in Bordeaux, France.

  • Santander Totta (exterior)

    Santander Totta

    A Stravifloor Jackup floating floor is installed in the gym of Santander Totta to shield the surrounding office spaces from unwanted noise and vibration.

  • Institut de Recherches Servier (exterior)

    Institut de Recherches Servier

    A Stravifloor Jackup shields the animal facility at the Servier Research Institute from harmful vibrations coming from the adjoining mechanical rooms.

  • Theater aan de Parade

    Theater aan de Parade

    To acoustically decouple the multifunctional hall at Theater aan de Parade in ‘s-Hertogenbosch, a Stravifloor Jackup-R floating floor was installed.

  • Admiralty Arch

    Admiralty Arch

    Admiralty Arch is undergoing a remarkable transformation into a luxury hotel. High-performance acoustic and vibration control systems are key to ensuring except

Technical Insights on Jack-Up Floor Sound Performance

This bulletin, which summarizes the key-findings of an extensive test campaign studying the acoustical performance (airborne sound reduction and impact noise isolation) of our redesigned Stravifloor Jackup-R system serves as a guide to those designing and prescribing jack-up floating floors.

Get my copy

A Practical Guide to Jack-Up Floor Insulation

This bulletin addresses a common misconception in jack-up floating floor design: that adding insulation within the jack-up cavity is not feasible. Through testing and practical case studies, it shows how proper insulation can enhance both airborne and impact sound performance without affecting the floor’s structural function. This guide serves as a reference for those designing and specifying jack-up floating floors.

Get my copy