ICC R5 study guide
ICC R5 · Work through your exam, one topic at a time.
The ICC R5 is a certification exam in the International Code Council's credentialing program for construction codes and standards. The ICC describes its credentialing program as "one of the most historic and prestigious credentialing programs for construction codes and standards" and states that it is "committed to upholding the highest standard through continuous review and partnership with experienced professionals." This page is an independent study resource and is not affiliated with, endorsed by, or sponsored by the International Code Council. The ICC R5 study guide has 5 sections and about 1,930 words.
01General Requirements and Administration
The R5 exam tests how a residential project moves from application to occupancy under the administrative chapter. Expect questions on permit triggers, submittal documents, inspection stages, certificates, and the building official's enforcement powers.
352 words, about 2 min02Building Planning and Foundations
This domain tests the planning rules that make a dwelling safe and usable-room sizes, light and ventilation, egress, glazing, stairs, guards-and the foundation rules that transfer loads to soil. Habitable rooms need minimum area and width; one habitable room must be at least 120 sq ft, other habitable rooms at least 70 sq ft, and no horizontal dimension less than 7 ft except kitchens.
454 words, about 2 min03Floor, Wall, and Roof Construction
The exam tests conventional light-frame construction: how members are sized, supported, connected, and protected so loads reach the foundation without splitting, rotation, or hidden fire spread. Floor joists, rafters, and ceiling joists must be sized from the span tables for the species, grade, spacing, and load.
382 words, about 2 min04Energy Efficiency and Interior Environment
This domain tests the energy envelope and the interior conditions that affect health and comfort: insulation, fenestration, air sealing, duct insulation, ventilation, and light. The prescriptive path sets minimum insulation R-values by climate zone for ceilings, wood-frame walls, floors, basement walls, slabs, and ducts.
362 words, about 2 min05Fire and Life Safety Provisions
The exam tests the passive and active features that buy time for escape: separation, alarms, egress, emergency escape, sprinklers, and protection of concealed spaces. Dwelling-unit separation and townhouse separation depend on occupancy and sprinkler protection.
380 words, about 2 min