Specification Writing All of the specification paragraphs are generic in their descriptions and there is never any need to change those descriptions as they apply to all installations. If you have accepted our explanations and like our wording, your specification would appear exactly as shown here. The paragraph sections are in the format of the American…
MOLDING ISOLATION BEARINGS The following pictures will give you a better idea of the process of manufacturing isolation bearings. Norman J. Mason President, Mason Industries, Inc.
SPRING ISOLATORS Not all problems can be solved with rubber isolation pads. On page 2 we have indicated that the cut off point for rubber bearings is about 5.5 Hz. This would mean that the incoming frequency should not be lower than 16.5 Hz just to maintain the traditional but often unsatisfactory 90% theoretical efficiency.…
Noise and vibration isolators are used to prevent the downward transmission of vibration from a machine to a structure, the upward transfer from the structure to a sensitive machine or to isolate a complete building from ground vibration. Ground vibration may be generated by above ground or under ground passenger or freight trains, or heavy…
ARCHITECTURAL CEILING HANGERS Floating Floors remain the most effective way of reducing sound transmission and vibration from the floor above. However, there are many situations where a floating floor is impractical or not economically feasible, so an isolated ceiling becomes the practical choice. There are two types of ceilings. There are the simple acoustical tile…
Floating Floor Structural Test PURPOSE OF TESTS To determine maximum loadings on reinforced concrete slabs supported by flexible .elements of unlimited deflection spaced 48″ apart. LOADING METHOD Placement of.500 lbs and 1000 lbs certified steel weights provided by the Howe Richardson Scale Company. 500 lb weights were approximately 12″x 12″ x 12″. 1000 lb weights…
Floating Floor Acoustical Field Test The acoustical tests discussed and reported here were conducted by Cerami and Associates, Inc. on July 1 and 2, 1974 in the T.V. Studio of Standard Oil of Indiana Company at the above referenced test location. The purpose of these tests was to measure the Impact Noise Rating (INR) and…
Intro Walls are isolated to prevent flanking around floating floors or to improve the STC between adjacent spaces. The word “flanking” is used to describe a vibration or noise path that goes around an isolated component. If a structure is built with continuous walls so that in cross section it is as an H and…
Intro When you need a floating floor to dramatically Increase your Sound Transmission Class and Impact Noise Rating Why not use the MASON JACK-UP FLOOR SLAB SYSTEM and eliminate the cost and need for: Combustible, rot prone plywood forms. A myriad of transmission paths through closely spaced supports. Moisture retaining fiberglass infill that plugs sub-drains…
