LSM

Spring Lift Slab Floor Mount

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Need to isolate a concrete slab exposed to significant vibration and impact activities such as experienced in a fitness space, basketball court, generator room, or bowling center? Consider LSM spring isolator assemblies, a viable product solution for addressing vibration and impact, especially when noises generated by these activities are deemed more problematic than airborne noise transmission.

Resources


Drawings | BIM


BIM OBJECT

ZIP

Isolator Components

PDF

Installation Sequence

PDF

System Detail: Before Lifting

PDF

DWG

System Detail: After Lifting

PDF

DWG

Perimeter Condition w/ Partition

PDF

DWG

Housekeeping Pad Options

PDF

DWG



Testing Results


Sound Test- Field #AT001065

Tongue & Groove Wood Flooring
4" Isolated Concrete Slab
LSM with 2" Air Space (vented)
6" Structural Slab

  • KINETICS NOISE CONTROL PRODUCTS:
    • LSM
    • Bond Breaker
  • ACOUSTICAL RATINGS:
    • FIIC 72
  • TESTING AGENCY & REPORT NUMBER:
    • BRUCK RICHARDS CHAUDIERE INC.
    • BRC 200-2006

Sound Test- Field #AT001066

Shredded Rubber Flooring
4" Isolated Concrete Slab
LSM with 2" Air Space (vented)
6" Structural Slab

  • KINETICS NOISE CONTROL PRODUCTS:
    • LSM
    • Bond Breaker
  • ACOUSTICAL RATINGS:
    • FIIC 73
  • TESTING AGENCY & REPORT NUMBER:
    • BRUCK RICHARDS CHAUDIERE INC.
    • BRC 200-009


Submittal Documents


Click on image to enlarge. Download multiple files by checking boxes next to desired files then click EXPORT.

Testing


STC/IIC Sound Test Data

  • Sound Test- Field #AT001065
  • Tongue & Groove Wood Flooring
  • 4" Isolated Concrete Slab
  • 2" Air Space (vented)
  • 6" Structural Slab

STC/IIC Sound Test Data

  • Sound Test- Field #AT001066
  • Shredded Rubber Flooring
  • 4" Isolated Concrete Slab
  • 2" Air Space (vented)
  • 6" Structural Slab

System Components


RESILIENT INTERFACE (PPI)

SPRAY ADHESIVE

SEALANT

BOND BREAKER


Drawings


4" Slab, 2" Air Space 1" Spring Deflection

4" Slab, 2" Air Space 2" Spring Deflection

6" Slab, 2" Air Space 1" Spring Deflection

6" Slab, 2" Air Space 2" Spring Deflection

Isolator Components

Installation Sequence

System Detail: Before Lifting

System Detail: After Lifting

Perimeter Condition w/ Partition

Housekeeping Pad Options


Additional Documents


DATA SHEET

SPECIFICATIONS

LEED

WARRANTY



Installation Overview


Sound Test- Field #AT001065

  • RESILIENT INTERFACE

    Adhere resilient interface (PPI by KNC) to all penetrations and perimeters.  PPI prevents sound vibration from transferring from the isolated slab to the non-isolated structure.

  • BOND BREAKER

    Cover entire floor with bond breaker (Poly Sheeting by KNC).  This ensures that the isolated slab can be lifted into place.

  • POSITION CANISTERS

    Place Canisters with Wooden Lid per engineered shop drawings (by KNC or KNC Representative).  Caulk or tape to bond breaker, preventing concrete from leaking beneath Canister.

  • CONCRETE REINFORCEMENT

    Install concrete reinforcement per project drawing and design specifications.

  • POUR CONCRETE

    Pour concrete and allow to cure.  Remove and discard wooden lid and screws.

  • ASSEMBLE ISOLATORS

    Grease Lifting and Leveling Screws.  Place Spring Assembly into cavity per engineered shop drawings.  Balance Steel Lid on Leveling Screw, insert and engage (do not tighten) Lifting Screws.

  • DRIVE LIFTING SCREWS

    Drive Lifting Screws two or three turns for each isolator in sequence until floor is raised.   Trim perimeter bond breaker and remove PPI tear strip.  Apply sealant in gap.


Time Lapse Video



Design Guidelines


FAQ


  • “My Acoustical Consultant selected LSM for use on my project, what is the first step?”

    Contacting your Local Representative is a good place to start. You may find the Design Phase Timeline below helpful as an overview of typical activities.

  • “What information is included in your shop drawings?”

    Our shop drawings include coordination of the live and dead loads, a dimensioned isolator layout with capacities, acoustical information including loading of individual isolators (with deflection curves), as well as project specific and general installation guidelines for the contractors.

  • “What information is needed for Kinetics to create shop drawings?”

    The timely gathering of essential information makes a difference in our turnaround time. A guide for helpful information can be found here.

  • “Should isolated floor drawings be in the Structural or Architectural plans?”

    As isolated slabs are by their nature non-structural, they typically reside in the Architectural Plans.

  • “What structural concerns are there?”

    Ensure that the structural slab has the proper depression to include the isolated slab as well as the airspace created after the slab is lifted. Structural slab stiffness and capacity considerations must be made relative to the activity of the floor (e.g. if the floor activity is to include the drop of heavy, a stiffer structural slab is required). The existing floor should be flat as the isolators can only mirror the floor on which they are resting. If there are seismic concerns, designing a curb capable of restraining the isolated slab will eliminate the cost of using in-slab restraints.

  • “Who should design the rebar spacing in the isolated slab?”

    If your project isn’t employing a structural engineer of record, then slab design should go to an independent third party firm to avoid any potential conflict-of-interest with isolator layout. Kinetics maintains relationships with independent structural engineering firms experienced in isolated slab design who can seal the reinforcement design in all fifty states.

  • “Help! The contractor just finished raising the floor and it is sticking up past the surrounding elevation!”

    Kinetics selects spring capacities and isolator spacing based on many factors, including but not limited to, even deflection between adjacent isolators, (limits concrete slab stress) the type of activity that will be occurring on the isolated slab, as well as the total live and dead loads that will be on the slab. In some cases the slab may need to be raised above the room threshold, but will settle to proper height once all the loads are added.


Design Phases



Isolated Floor Seismic Restraint

Structural Floor Flatness


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  • FF = 38 (SOV)
  • FF = 25 (MLV)
  • Kinetics requires a specified overall value of Floor Flatness FF = 38 and a minimum local value of Floor Flatness FF = 25. This means that locally the floor is considered “Flat” and globally the floor is considered “Good” (“Flat” and “Good” are terms defined by ACI- American Concrete Institute Guidelines Section 302). Conventionally this means locally a 10 foot straight edge would have 1/4 inch of variation, and globally the variation would be less than 3/16 inch.
  • These requirements are necessary for Kinetics spring lift slabs because the top of the structural floor becomes a pouring form for the bottom of the isolated slab. As the canisters are a fixed height, inconsistencies in the structural floor become reflected in the isolated slab. If the structural floor is not considerably flat then issues can arise that adversely affects the acoustical, and even possibly the structural performance of the isolated, elevated slab. The standard deviation of varying thickness of the slab could be significantly more than was accounted for in the selection of the isolators; this could lead to under or over isolation, incorrect leveling screw set dimensions, and structural stress in the isolated slab. This can also make lifting the slab to a constant elevation very difficult.
  • Normally FL is typically specified with along with these numbers for levelness. While flatness between mounts is critical, the slope of a floor is not nearly as crucial. Please contact Kinetics if a sloped floor is being considered with spring isolated slabs.

Construction Documents Content Guide


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  • Architectural/General:Floor plans
    • Note whether the isolated slab area is one single isolated slab, or divided into
      multiple isolated slabs and/or non-isolated infill areas.
  • Section Details
    • EOS (edge of slab) conditions and transitions
    • slab thickness (typically 4"-6")
    • airspace under the slab (typically 2")
    • housekeeping pads or other areas of thicker concrete
  • Loading DataClarifies which walls sit on the isolated slab, and which walls sit on the structural slab
    For walls that sit on the isolated slab, provide:
    • Partition plan
    • Partition schedule
    • Partition heights
    • Load path and load (in pounds or KIPS) of any stationary equipment, millwork, etc.
    • Load path and weights of any operable partitions/curtains, seating, equipment, etc.
    • Identify and provide equipment and materials with their respective weights that may be moved
      on floor during or after construction.
  • Structural:
    • framing plan and/or edge-of slab plan
    • restrictions/requirements of isolator spacing, if any (typically 48" on center each way)
    • type of concrete (normal weight, lightweight, etc.)
  • Acoustical: (from Acoustical Consultant and only if applicable)
    • 1" or 2" Spring deflection
    • Minimum Spring Deflection
    • Damping Information
    • Venting Details

Fabricated, made-to-spec housings permit flexible isolation system design for a range of slab thicknesses, air cavities, and applied loads. Your acoustical design team can assist you with your specific requirements.

Required deflection and corresponding natural frequency for the floor isolators can be determined using one inch (1") or two inch (2”) rated coil springs. Ask us about options for the airspace between the isolated (lifted) slab and the structural slab.

Factory-prepared shop drawings detail spacing, spring load/deflections, and structural floor flatness requirements. Our Project Coordinators and Professional Engineers are ready to assist you with your specific design questions.

Rubber cap assembly protects spring coils against resonant or “ringing” frequencies.

Based on your floor system requirements, in-slab or perimeter seismic restraint elements as well as Coulomb Dampers and other damping components are easily designed.

LSM can ship in ready-to-install sub-assemblies. For instance, canister assemblies and related accessories can ship ahead of the spring assemblies based on pour schedule requirements. Spring assemblies can follow once the slab is cured to strength and ready to be raised helping eliminate “missing parts” just when you are ready to lift.