2018 international building code by international code council
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About this book
The International Building Code® (IBC®) establishes minimum requirements for building systems using prescriptive and performance-related provisions. It is founded on broad-based principles that make possible the use of new materials and new building designs. This 2018 edition is fully compatible with all of the International Codes® (I-Codes®) published by the International Code Council® (ICC®), including the International Energy Conservation Code®, International Existing Building Code®, International Fire Code®, International Fuel Gas Code®, International Green Construction Code®, International Mechanical Code®, International Plumbing Code®, International Private Sewage Disposal Code®, International Property Maintenance Code®, International Residential Code®, International Swimming Pool and Spa Code®, International Wildland-Urban Interface Code®, International Zoning Code® and International Code Council Performance Code®.
The I-Codes, including this International Building Code, are used in a variety of ways in both the public and private sectors. Most industry professionals are familiar with the I-Codes as the basis of laws and regulations in communities across the U.S. and in other countries. However, the impact of the codes extends well beyond the regulatory arena, as they are used in a variety of nonregulatory settings, including:
- Voluntary compliance programs such as those promoting sustainability, energy efficiency and disaster resistance.
- The insurance industry, to estimate and manage risk, and as a tool in underwriting and rate decisions.
- Certification and credentialing of individuals involved in the fields of building design, construction and safety.
- Certification of building and construction-related products.
- U.S. federal agencies, to guide construction in an array of government-owned properties.
- Facilities management.
- “Best practices” benchmarks for designers and builders, including those who are engaged in projects in jurisdictions that do not have a formal regulatory system or a governmental enforcement mechanism.
- College, university and professional school textbooks and curricula.
- Reference works related to building design and construction.
Questions & Answers from this book
Questions and answers are connected to the referenced book and its available source material.
Chapter 4: Special Requirements for Specific Occupancies or Elements
Chapter 5: Height and Area Limitations Based on Type of Construction
Chapter 6: Height and Area Limitations Based on Type of Construction
Chapter 6: Fire Resistance and Protection Requirements
Chapter 7: Requirements for Evacuation
What must be provided in laboratory suites where hazardous materials are present, as per the 2018 International Building Code?
Laboratory suites with hazardous materials must have a liquid-tight floor, ventilation per Chapter 7 of NFPA 45 and the International Mechanical Code, and an automatic sprinkler system.
What are the ventilation requirements for laboratory suites according to the 2018 International Building Code?
The ventilation requirements for laboratory suites according to the 2018 International Building Code are to comply with Chapter 7 of NFPA 45 and the International Mechanical Code.
Chapter 7: Fire Resistance and Protection Requirements
Chapter 8: Specific Requirements to Allow Use and Access to a Building for Persons with Disabilities
According to Section 705.8.1, what are the exceptions that allow unlimited unprotected openings in the first story above grade plane?
Unlimited unprotected openings in the first story above grade plane are allowed if the wall faces a street with a fire separation distance of more than 15 feet or an unoccupied space that is at least 30 feet wide and has access from a street by a posted fire lane. Additionally, buildings without fire-resistance-rated exterior walls are permitted to have unlimited unprotected openings.
How should fire barriers extend according to Section 707.5 of the 2018 International Building Code?
Fire barriers must extend from the top of the foundation or floor/ceiling assembly below to the underside of the floor or roof sheathing, slab, or deck above. They must be securely attached and continuous through concealed spaces, such as above suspended ceilings.
How must access openings for waste or linen chutes be protected according to Section 713.13.3?
Access openings for waste or linen chutes must be located in rooms enclosed by at least 1-hour fire barriers or horizontal assemblies. Openings into these rooms must have a fire protection rating of at least 3/4 hour, and doors must be self- or automatic-closing upon smoke detection.
Chapter 9: Fire Resistance and Protection Requirements
Chapter 9: Building Systems
How is the fire-resistance rating of multiwythe masonry walls calculated as per the 2018 International Building Code?
The fire-resistance rating of multiwythe masonry walls is calculated using a formula that considers the fire-resistance rating of each wythe and the continuous airspace between them. The formula is RA = (R1^0.59 + R2^0.59 + ... + Rn^0.59 + A1 + A2 + ... + An)^1.7, where R1, R2, ..., Rn are the fire-resistance ratings of the wythes and A1, A2, ..., An are factors for each continuous airspace.
How should gypsum board be applied to achieve the required fire-resistance rating for structural steel columns according to the 2018 International Building Code?
To achieve the required fire-resistance rating for structural steel columns using gypsum board, apply Type X gypsum wallboard vertically without horizontal joints or with staggered joints. The total thickness of the gypsum board depends on the fire-resistance rating and the weight-to-heated-perimeter ratio (W/D) of the column.
How is the fire resistance of structural steel columns protected with concrete determined according to the 2018 International Building Code?
The fire resistance of structural steel columns protected with concrete is determined using a specific formula that considers factors such as the weight of the steel column, the heated perimeter, the thickness of the concrete cover, and the thermal properties of the concrete.
Chapter 10: Structural Components—Performance and Stability
What is the maximum exit access travel distance for Group R-3 occupancies protected by an automatic sprinkler system according to the 2018 International Building Code?
The maximum exit access travel distance for Group R-3 occupancies protected by an automatic sprinkler system is 125 feet.
What is the maximum allowable force for pushing or pulling open interior swinging egress doors according to the 2018 International Building Code?
The maximum allowable force for pushing or pulling open interior swinging egress doors is 5 pounds (22 N).
Chapter 11: Encroachment Outside of Property Lines
What percentage of accessible parking spaces is required for Group R-2, R-3, and R-4 occupancies that have Accessible, Type A or Type B dwelling units?
At least 2 percent of parking spaces must be accessible for Group R-2, R-3, and R-4 occupancies with Accessible, Type A, or Type B dwelling units.
In what circumstances are common use circulation paths within employee work areas not required to be accessible routes as per Section 1104.3.1?
Common use circulation paths within employee work areas are not required to be accessible routes if the work area is less than 1,000 square feet and defined by permanent partitions, if they are integral components of equipment, or if they are in exterior areas fully exposed to the weather.
What percentage of sleeping units in Group I-3 occupancies must be Accessible units according to the 2018 International Building Code?
At least 3 percent of the sleeping units in Group I-3 occupancies must be Accessible units.
Chapter 11: Specific Requirements to Allow Use and Access to a Building for Persons with Disabilities
Chapter 12: Safeguards During Construction
What is the required net area of ventilation openings for crawl spaces with uncovered earth floors according to the 2018 International Building Code?
The required net area of ventilation openings for crawl spaces with uncovered earth floors is not less than 1 square foot for each 150 square feet of crawl space area.
Under what conditions can the net free cross-ventilation area for attics be reduced to 1/300 in Climate Zones 6, 7, and 8?
The net free cross-ventilation area for attics can be reduced to 1/300 in Climate Zones 6, 7, and 8 if a Class I or II vapor retarder is installed on the warm-in-winter side of the ceiling and 40-50% of the required venting area is provided by upper ventilators located within 3 feet of the ridge.
How should courts be designed in terms of width and length for buildings exceeding two stories above grade plane as per the 2018 International Building Code?
For buildings exceeding two stories above grade plane, courts must be at least 3 feet in width and 10 feet in length. The width must increase by 1 foot and the length by 2 feet for each additional story above two stories. For buildings over 14 stories, the dimensions are calculated based on 14 stories.
Chapter 12: Building Systems
What components must be included in an accessible means of egress as per Section 1009 of the 2018 International Building Code?
An accessible means of egress must include components such as accessible routes, interior and exterior exit stairways, elevators, platform lifts, horizontal exits, ramps, areas of refuge, and exterior areas for assisted rescue.
How does the exit access travel distance differ for buildings equipped with an automatic sprinkler system compared to those without, as outlined in the 2018 International Building Code?
In buildings equipped with an automatic sprinkler system, the exit access travel distance is generally increased compared to buildings without such a system. For example, in occupancy groups like A, E, F-1, M, R, and S-1, the distance increases from 200 feet to 250 feet when a sprinkler system is present. In Group B occupancies, the distance increases from 200 feet to 300 feet with a sprinkler system.
Chapter 13: Referenced Standards
Chapter 14: Structural Components—Performance and Stability
Chapter 15: Structural Components—Performance and Stability
Chapter 16: Structural Components—Performance and Stability
Chapter 17: Structural Components—Performance and Stability
How should handrails and guards be designed to resist loads according to Section 1607.8.1 of the 2018 International Building Code?
Handrails and guards must be designed to resist a linear load of 50 pounds per linear foot and a concentrated load of 200 pounds. Intermediate rails, balusters, and panel fillers must resist a concentrated load of 50 pounds.
What are the design requirements for concrete and clay roof tiles to withstand aerodynamic uplift moments as specified in the 2018 International Building Code?
The 2018 International Building Code specifies that concrete and clay roof tiles must be designed to withstand aerodynamic uplift moments using Equation 16-34. The design involves factors like wind velocity pressure, lift coefficient, and roof pressure coefficient. Roof tiles must be installed on solid sheathing, have a minimum head lap, and meet specific size and installation requirements.
More questions
How does occupancy classification influence the requirements for fire protection and means of egress systems in the 2018 International Building Code?
Occupancy classification in the 2018 International Building Code determines the requirements for fire protection and means of egress systems by assessing the level of fire hazard associated with specific occupancies. This classification influences the height and area limitations, fire-resistance ratings, and the design of egress systems to ensure a reasonable level of safety for occupants. Specific chapters, such as Chapters 9 and 10, outline these requirements based on occupancy classification.
What are the key considerations for building height and area limits according to Chapter 5 of the 2018 International Building Code?
Chapter 5 of the 2018 International Building Code outlines building height and area limits based on occupancy and construction type. It allows for increases in these limits due to factors such as open frontage, fire department access, and sprinkler systems. Specific tables (504.3, 504.4, and 506.2) provide detailed thresholds for building size, and unlimited area buildings are permitted under certain conditions.