Codes & Standards

2023 November

Wall Fire Rating Details

I often get calls about specific fire rating details: Do I have to install this backer piece behind my control joint? Do butt joints have to be staggered? Is it OK to run wallboard vertically...

2023 September

Control Joints in Interior Gypsum

This month I want to cover interior gypsum applications. The joint requirements are different for exterior applications and for portland cement plaster.

2023 May

Did You Hear That?

What are the code requirements for sound? In the International Building Code, sound transmission requirements are in chapter 12, “Interior Environment.”

2022 December

EIFS in NYC

New York City is set to initiate a major code change that will affect the design and installation of certain types of exterior wall assemblies.

2022 November

Acoustics in Suspended Acoustical Ceilings

In acoustical wall design the main consideration is how much sound energy will pass through the wall itself. The wall assembly will be tested at specific sound frequencies where a unique single number will...

2022 October

Horizontal Membrane Protection

Membrane protection in the context of fire resistance indicates a component in either a fire-resistive assembly or a specialized system providing the fire resistance. This definition is a prime example of how advances in...

2022 September

What Is Delegated Design?

The concept of delegated design has been around for many years. Recent conversations in professional circles center on its increased usage. However, there is a certain confusion that is often related to the process....