TV Studio, Theater Spring Jack-up System

1.01 Description

1. Scope of Work
   1. Isolate floating floors from the building structure by means of jack-up spring isolators and perimeter isolation in each of the ______________ rooms as shown on the drawings. (Architect to fill in name of room.)
      If sound barrier walls are used, add the following:
   2. Build sound barrier walls on the floating floors.
2. Substitution of Materials
   1. Substitute materials shall meet or exceed the “quality” of the products which are listed in these Specifications. Submit samples for consideration on this project.

1.02 Design

1. Intent
   1. The floating floor system shall consist of a 4”(100mm) thick concrete slab isolated from and supported 2”(50mm) above the structural slab by resilient spring isolators within cast iron housings designed to jack up the floor after pouring on the sub-floor.
      If sound barrier walls are used, add the following:
      Sound barrier walls consisting of 6”(150mm) filled concrete block (Barrier wall construction may be changed by the architect when writing specification) shall rest on the floating floor with a 31/2”(90mm) air gap to the structural walls. (3”(90mm) may be reduced to 2”(50mm) if no sway braces are needed.)
   2. The floating floor slab shall be isolated from adjoining walls and curbs by means of perimeter isolation.
   3. Any floor drains, piping, conduit and duct penetrations must not short circuit the isolation system.
   4. In seismic zones the floating floor shall be restrained horizontally by curbs or walls designed to withstand the horizontal seismic forces. Solid bridge bearing LDS pads shall be interspersed between perimeter isolation to withstand the seismic forces with a maximum deflection of 0.2”(5mm). When perimeter cannot be used for seismic constraint, intersperse horizontal restraints within floor system.
2. Performance Requirements
   1. All spring isolators shall have the minimum specified deflection.
3. Floor System Construction Procedure
   1. The setting of all isolation materials and raising of the floor shall be performed by or under the supervision of the isolation manufacturer.
   2. Set and waterproof any drains and lower pipe seals in keeping with waterproofing specifications.
   3. Cement perimeter isolation around all walls, columns, curbs, etc.
      1. In seismic zones intersperse the perimeter isolation with bridge bearing quality LDS pads the thickness of the perimeter isolation.
   4. Cover entire floor area with 6 mil (0.15mm) polyethylene sheeting and carry sheeting up perimeter isolation.
   5. Place spring isolator castings on a maximum of 54”(1370mm) centers in the general areas in strict accordance with the approved drawings prepared by the isolation manufacturer. Additional reinforcement such as in wall locations must be detailed on isolation manufacturer’s drawings when required.
      If sound barrier walls are used, add the following:
      Perimeter isolators shall be selected to support the wall weight in addition to the perimeter of the floating floor.
   6. Place reinforcing as shown on the drawings and pour floor monolithically.
   7. Raise floor 2”(50mm) by means of the isolator threaded sleeves and replace covers.
   8. Caulk perimeter isolation in all locations.
      If sound barrier walls are used, add the following:
   9. Construct block walls on the floating floor being careful that mortar does not drop behind the walls. Place 2”(50mm) fiberglass bats against the structural wall as a precaution. Readjust perimeter isolators as required to compensate for wall weight as the wall is built. Provide sway braces and isolated angle iron wall braces at the top of the walls. Caulk angle iron braces.
4. Submittals
   1. Detailed product drawings including Load/Deflection curves of all isolators.
   2. A drawing or drawings showing:
      1. Dead, live and concentrated loads.
      2. Isolator sizes, deflections and locations.
         If sound barrier walls are used, add the following to b:
         Wall sway brace and isolated angle iron brace locations.
      3. Any drain and penetration locations.
      4. Size, type, elevation and spacing of concrete reinforcement.
      5. Caulking details.
      6. Floating floor and wall construction procedure.

1.03 Quality Assurance

1. Floating floor system components shall be designed and fabricated by a manufacturer with at least ten years experience in one hundred similar installations.
2. The floating floor isolation materials shall be installed and the floor raised by or under the supervision of the isolator manufacturer.

1.04 Site Conditions

1. If site conditions are unsatisfactory or raise questions about the installation of the floating floor, the work will not proceed until the condition has been corrected in a manner acceptable to the isolation manufacturer. The sub-floor must have the same pitch as the top of the floating floor or special provisions made for isolator housings of different height.

1.05 Sequencing and Scheduling
Coordinate work with other trades and coordinate scheduling with the construction supervisor to minimize delays.