NCPCCI Inspector 1A and 1B Exam Prep

The 2021 IRC® contains many important changes such as:

• Braced wall lines must be placed on a physical wall or placed between multiple walls.
• The rated separation for two-family dwellings is 1 hour whether or not a lot line exists between units.
• Emergency escape and rescue openings require a clear 36-inch-wide path to a public way.
• An engineered design is required for storm shelters.
• A habitable attic is limited to one-half the area of the story below and the dwelling requires sprinklers.
• Updated Wind Speed maps match IBC and ASCE 7 maps.
• Deck design now considers snow load, tributary area for footing and post height, and guard details.
• Specific requirements for deck guardrails were added.
• Component and cladding wind pressures in Table R301.2(2) are updated for new design wind speeds and hip or gable roof profiles.
• Minimum footing size tables are revised to more accurately reflect current practice.
• Cripple wall requirements apply only to exterior cripple walls.
• New appendices for cob construction and 3D printed construction are added.
• A 30 percent reduction of airflow is permitted for balanced ventilation systems.
• Commercial gas cooking appliances are prohibited.
• The head pressure for a water test of DWV systems increased to 10 feet.
• Air vacuum testing is now permitted for plastic piping DWV systems.
• Section P2904 for dwelling sprinklers is expanded to more closely align with NFPA 13D.
• An emergency service disconnect is required in a readily accessible outdoor location.
• A surge-protective device (SPD) is now required at the service panel.
• The number of receptacle outlets required for peninsular and island countertops in kitchens is determined by the area of the countertop surface.
• GFCI protection is now required for damp and wet locations not included in the other 10 areas requiring GFCI protection.

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The 2021 IBC® contains many important changes such as:

• Puzzle rooms (escape rooms) are now defined and regulated as special amusement areas, requiring compliance with Section 411 and special means of egress requirements.
• For the purposes of determining the allowable number of control areas in a building, each portion separated by one or more fire walls is now considered as a separate building.
• In Group E occupancies, enhanced classroom acoustics in compliance with ICC A117.1 are to be provided in all classrooms having of volume of 20,000 cubic feet or less.
• The requirements for metal composite materials and systems (MCM) installed on the exterior walls of Types I, II, III and IV construction were simplified and sprinkler allowances were deleted.
• The use of intermodal shipping containers as buildings is now specifically addressed through provisions intended to supplement existing applicable IBC requirements.
• Automatic sprinkler protection is now required in Group S-2 open parking garages where any fire area exceeds 48,000 square feet.
• The 2017 edition of ICC A117.1 was adopted.
• Parapets of a minimum height are now required for aggregate-surfaced roofs to prevent blow-off.
• Mixed occupancy buildings with assembly spaces are placed in Risk Category III when the total public assembly occupant load is greater than 2500 people.
• The 2021 IBC snow map is updated to match ASCE 7-16 snow maps by adding a reference to ASCE 7 snow tables in states with large case study areas.
• Secondary rain loads are updated to be consistent with ASCE 7.
• Special inspection requirements were added to address the anchorage and connection of mass timber structural elements.
• Installation of firestop, fire-resistant joint systems and perimeter fire barrier systems in residential-use buildings now requires special inspection in Group R fire areas having an occupant load exceeding 250 people.
• Frost protection for egress doors was added to the foundation requirements.
• ACI standards ACI 117 and ITG 7 were added by reference to provide acceptable tolerances for concrete construction.
• Three new types of construction (Types IV-A, IV-B, and IV-C) allow mass timber buildings of taller heights, more stories above grade, and greater allowable areas compared to existing provisions for heavy timber buildings.

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