§ 28-109 Definitions.
RCNY § 28-109
For the purpose of this chapter, the meaning of terms shall be as follows (unless the context specifically indicates otherwise): ASTM. "ASTM" shall mean ASTM International, the international standards organization. Canted Panel. "Canted Panel" shall mean a tilted panel of noise mitigation material that extends a noise barrier to protect upper floor receptors from noise sources. Insertion Loss. "Insertion Loss" shall mean the reduction in noise level at the receptor's location attributable to the introduction of a noise barrier, muffler, or other mitigation measure. Jersey Bases. "Jersey Bases," also known as concrete traffic dividers or jersey barriers, shall mean movable concrete bases used in construction that can accommodate fencing poles to which noise curtain material can be attached. Noise absorptive quilt. "Noise absorptive quilt" shall mean padded light-weight porous material sewn together into a quilt-like pattern and then attached to one side of a vinyl sheet. Noise Barrier. "Noise Barrier" shall mean a structure used for the purpose of placing near a noise source to reduce the noise level measurable at a receptor location. This can consist of noise resistant materials such as plywood, timbers, trailer containers, or noise curtains. Noise curtain. "Noise curtain" shall mean noise control product comprised of (typically) 1/4-inch thick vinyl sheet, to act as a noise resistant material, with some noise absorptive quilt material attached on one side of the vinyl as well. Noise Pathway Controls. "Noise Pathway Controls" shall mean noise mitigation techniques placed between the source of noise and the receptor. Noise-resistant material. "Noise-resistant material" shall mean material that has sufficient mass and stiffness to resist noise from transmitting through the material. Receptor. "Receptor," also known as receiving property, shall mean real property, including but not limited to buildings, grounds, offices and dwelling units, from which sound levels from sound sources outside such property may be measured. Responsible party. "Responsible party" shall mean, with respect to any activity regulated or covered by these rules, the owner of the premises on or where such activity occurs, and any agent of the owner engaged in such activity or any participant in such activity, including contractors and subcontractors. Any agency of the City of New York may also be a responsible party. Sound Transmission Class (STC). The "Sound Transmission Class", or "STC rating", shall mean a single index number used to describe a solid panel or material's ability to prevent noise from transferring directly through it. Determination of a material's STC is done in accordance with ASTM Test Method E 90. (Amended City Record 3/15/2017, eff. 4/14/2017)
