Liftslab Floors Suggested Specification

Spring Liftslab Floating Floors are typically used where control of low frequency impact and airborne noise is critical. Standard systems are available with up to 2" deflection springs. Custom systems with higher deflection springs and vents to decrease the stiffness of the entrapped air between the floating and structural slab are also available.

Kinetics Model LSM Spring Liftslab Floating Floors are used in mechanical equipment rooms over highly sensitive area, gymnasiums over classrooms and as metrology room floors to isolate sensitive equipment from transient structure-borne noise.

Suggested Specifications
Section 13080 Sound Control
(Liftslab Floors)

Part 1 GENERAL

1.01 WORK INCLUDED

A. Furnish all labor, materials, tools, appliances, equipment, and perform all operations necessary for the complete execution of the installation of the Liftslab Floor system as shown on contract drawings or indicated in the contract documents.

1.02 RELATED WORK: shall include but not be limited to:

A. Concrete and reinforcing: Section ______
B. Waterproofing: Section _______
C. Special isolated floor drains: Section _______
D. Metal pipe and conduit sleeves: Section ________
E. Caulking: Section ________

1.03 SYSTEM DESCRIPTION

A. Liftslab system shall include isolator assemblies consisting of cast iron housing and lifting bolt and 2" thick isolation pad, perimeter isolation, bond breaker, isolated floor drains, reinforced concrete and perimeter caulking.

1.04 QUALITY ASSURANCE

A. The Liftslab floor system shall be designed and fabricated at the facilities of a nationally recognized manufacturer having a minimum of five years experience furnishing similar systems. The system shall be installed by the manufacturer or his authorized representative.

Part 2 PRODUCTS

2.01 MATERIALS

A. The Liftslab floor system shall be Model FLM by Kinetics Noise Control, Dublin, Ohio, Model FLM Liftslab Floor Isolation System shall consist of high density molded fiber glass pads, each coated with a flexible elastomeric membrane. Isolation pads shall be 2" thick and shall be spaced as recommended by the manufacturer but not greater than 48" o/c both ways. Pads shall be manufactured from annealed glass fibers stabilized by precompression during manufacture.

B. The isolator shall be enclosed in a cast housing incorporating devices which will enable reinforcing bars to be attached to the isolator assembly. Each assembly shall be furnished with a 3/4" lifting screw to permit lifting of the floating slab to operating level after the concrete is cured. A temporary plug shall be provided to prevent concrete from entering the threaded hole.

Perimeter isolation shall be 3/4" thick resilient material as recommended by the manufacturer.

Part 3 EXECUTION

3.01 INSTALLATION

A. The installation of all sound isolation materials specified herein, including those installed under other sections of the specifications, shall be in accordance with procedures submitted by the isolation material manufacturer, and approved by the Architect.

B. Prior to placement of isolator assemblies, a bond breaker shall be placed over the entire floor. The bond breaker shall consist of one layer of 6 mil polyethylene overlapped and taped at all seams and at all connections at the building.

C. All isolator assemblies shall be placed on the bond breaker in accordance with the approved shop drawings.

Reinforcing bars shall be assembled to the isolator assemblies in accordance with instructions from the structural engineer.

E. After installation of the isolation materials, the concrete shall be poured and allowed to cure.

F. After curing, the floor shall be raised to operating elevation, but turning the leveling screws in sequence, in accordance with the instructions from the isolation system manufacturer.

G. After raising, the screw holes shall be grouted and the perimeter and all penetrations shall be caulked using a one part polyurethane sealant.

H. All sound isolation materials and building components supported by isolation material are to be completely free from rigid contact with any part of the building structure.