Construction types classify buildings by fire resistance and materials under the IBC. This episode breaks down all five types, from Type I fire-resistive to Type V wood frame.
We walk through each construction type with real-world examples so you can picture where you actually see them. Type I is the fortress: concrete and protected steel in high-rises and hospitals. Type II is the file cabinet: noncombustible steel that can still warp in heat. Type III is the mullet: brick on the outside, wood on the inside. Type IV is heavy timber that chars but stands. And Type V is the wood framing in most American homes.
You'll also learn how construction type controls building height, area, cost, and material selection. We cover the difference between Type A and Type B subtypes, why brick veneer over wood framing is still Type V, how five-over-one podium buildings combine Type I and Type V to save money, and how sprinklers can increase your allowable area by up to 300 percent.
📝 Key topics covered:
Five IBC construction types (I through V) with fire resistance ratings and real-world examples
Type A vs Type B subtypes and how fire protection levels affect allowable building size
How construction type determines height, area, cost, and material selection
Five-over-one podium construction and how it combines Type I and Type V
Sprinkler area increases of up to 300 percent and their limits
Construction type myths that trip up ARE candidates and practicing professionals
⏱️ Chapters:
(0:00) Construction Types and Building Codes
(1:40) What Are Construction Types?
(3:24) How Construction Types Affect Design
(5:52) Type 1 Construction: Fire-Resistive
(8:10) Type 2 Construction: Non-Combustible
(9:07) Type 3 Construction: Ordinary
(10:14) Type 4 Heavy Timber Construction
(11:21) Type 5 Wood Frame Construction
(12:34) Type A vs Type B Construction
(13:42) Real-World Construction Type Examples
(14:52) Construction Type Height and Area Limits
(16:10) Construction Type Myths and Mistakes
(17:40) Construction Types Recap
📖 Read the full blog post
📝 Download the FREE Construction Types study notes
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📚 Individual ARE Exam Courses:
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Building Codes 101
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PA 101 (Programming and Analysis)
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PPD 101 (Project Planning and Design)
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PDD 101 (Project Development and Documentation)
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CE 101 (Construction and Evaluation)
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PcM 101 (Practice Management)
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PjM 101 (Project Management)
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Building Systems 101
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AIA Contracts 101