ADOPTS WITH AMENDMENTS:

International Residential Code 2015 (IRC 2015)

Part I — Administrative

Part II — Definitions

Part III — Building Planning and Construction

Part IV — Energy Conservation

Part V — Mechanical

Part VI — Fuel Gas

Part VII — Plumbing

Part VIII — Electrical

Part IX — Referenced Standards

Heads up: There are no amended sections in this chapter.

Appendix K Sound Transmission

AMENDMENT
This section has been amended at the state or city level.
Wall and floor-ceiling assemblies separating dwelling units, including those separating adjacent townhouse units, shall provide air-borne sound insulation for walls, and both air-borne and impact sound insulation for floor-ceiling assemblies.

AK102.1 General

AMENDMENT
This section has been amended at the state or city level.
Air-borne sound insulation for wall and floor-ceiling assemblies shall meet a sound transmission class (STC) rating of 45 when tested in accordance with ASTM E90.

AK102.1.1 Masonry

AMENDMENT
This section has been amended at the state or city level.
Floor/ceiling assemblies between dwelling units, or between a dwelling unit and a public or service area within a structure, shall have an impact insulation class (IIC) rating of not less than 45 when tested in accordance with ASTM E 492.

Section AK104 Referenced Standards

AMENDMENT
This section has been amended at the state or city level.
ASTM
ASTM E 90—04 Test Method for Laboratory
Measurement of Air-borne Sound
Transmission Loss of Building
Partitions and Elements
AK102
ASTM E 492—09 Specification for Laboratory
Measurement of Impact Sound
Transmission through Floor-ceiling
Assemblies Using the Tapping
Machine
AK103
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