Envelope #11: Rule of thumb for concrete thickness (over steel deck) to meet fire rating requirement

Good morning! This is Back of the Envelope – the place to learn structural engineering in tiny bites 🍪.

In today’s email, I will talk about how to do a quick-n-dirty preliminary check to make sure your composite steel deck meets the fire rating requirement.

This is something that confuses me almost all the time… but there are some rule of thumb that could be applied for back-of-the-envelope checks.

Let’s dive in.

(Estimated read time = 1 minute and 30 seconds -- I told you, tiny bites)