Form CBP-1 · Rev. 26CodeBookPrep

B2 · area 04 · subtopic 0401

Floor Systems

5 percent of the B2 Commercial Building Inspector exam. At 80 questions, that is roughly 4 questions, each with about 158 seconds of budget including the lookup.

Exam
B2
Area
Floor Construction
Weight
5%
Questions
~4

What this subtopic covers

Floor system spans, bearing and connections per approved plans; cutting, notching and boring limits; insect and decay protection; subflooring and decking thickness, span and grade; floor design and fasteners; crawlspace clearance, ventilation, insulation, screening and access.

Paraphrased from the certification content outline published by the International Code Council for the B2 exam. This page cites no code sections and reproduces no code text: your code book carries the requirements, and the skill this site trains is finding them fast.

How to drill it

  • Find the chapter of the International Building Code that carries this subject and read it once for structure, not retention: what lives here, what gets sent elsewhere, which tables exist.
  • Write your own plain-language phrases for what this subtopic covers, then note the code's terms beside them. Mismatches between the two columns are exactly where exam questions cost you time.
  • Run timed lookups: pick a requirement named in the descriptor above, start a stopwatch, find the governing text in your book, stop. Log the seconds. Past two minutes is a miss even when the answer is right.
  • Weight your reps to the number above. Roughly 4 questions means this subtopic deserves a dedicated drill session of its own.
2024 IRC Fast-Tabs2024 IRC Fast-TabsPre-printed tabs for the 2024 edition. Place them yourself; the placement is the study.Check price

The rest of area 04: Floor Construction (8%)

SubtopicWeight
0402Concrete Slabs3%
Drill the translation layer freeFull B2 breakdown

The kit that goes on the table

2024 IRC2024 IRCThe book itself2021 IRC2021 IRCIf you register on 20212024 Fast-Tabs2024 Fast-TabsPlace them yourselfConstruction Master ProConstruction Master ProFeet-inch math, no errors

Match the book and tabs to the edition you register for.Confirm which, first.

The 120-second study sheet

One page: every topic weight on all four residential exams, the plain-language to code-language glossary, and the two-week study sequence. Free, straight to your inbox.

No spam, no selling your address. One useful sheet and occasional exam-prep notes.