IBC 2024 Elevator Requirements: Six Separate Scoping Questions

The 2024 IBC does not contain one universal rule that says every four-story building must install an elevator. At least six different questions are often collapsed into that shortcut:

1. Must an accessible route connect the levels under Chapter 11?
2. Must an elevator be part of an accessible means of egress under §1009.2.1?
3. If elevators are provided, must one accommodate an ambulance stretcher under §3002.4?
4. Is a fire service access elevator required by §403.6.1 and §3007?
5. Will an elevator be designed for occupant self-evacuation under §3008?
6. What shaft, opening, machine-space, emergency-operation, and accessibility provisions apply to the installed system?

These checks use different height datums, conditions, exceptions, and technical standards. Determine them separately.

Elevator scoping at a glance

The locally adopted building code, accessibility law, elevator safety rules, fire code, and referenced standards can add or modify requirements.

1. When must an accessible route connect building levels?

IBC §1104.4 generally requires at least one accessible route to connect each accessible level, including mezzanines, in multilevel buildings and facilities. The section then lists exceptions. Those exceptions are condition-specific; they address such matters as limited aggregate area in certain nonresidential buildings, levels without required accessible elements, and a limited two-story/low-occupant-load condition.

An accessible route is a route, not necessarily an elevator. Depending on the project and the permissions in Chapter 11, it may use a complying ramp, elevator, or permitted platform lift. Where a passenger elevator is on an accessible route, the IBC accessibility provisions and Chapter 30 apply, with ICC A117.1 supplying referenced technical criteria.

Federal ADA scoping is a separate legal analysis. For Title III facilities, the federal elevator exception addresses facilities under three stories or with fewer than 3,000 square feet per story, but it does not apply to listed facility types such as shopping centers or malls, professional offices of health care providers, public transit stations, and airport passenger terminals. State and local accessibility rules may differ. Passing one IBC exception does not by itself establish ADA compliance.

2. When must accessible egress include an elevator?

IBC §1009 governs accessible means of egress, not ordinary vertical circulation. Section 1009.2.1 requires at least one required accessible means of egress to include an elevator complying with §1009.4 where either:

• a required accessible floor is four or more stories above or below a level of exit discharge; or
• an accessible occupiable roof is above a story that is three or more stories above the level of exit discharge.

The section includes two exceptions for buildings sprinklered throughout under the listed sprinkler provisions. The elevator is not required as part of the accessible means of egress on qualifying floors with a horizontal exit at or above the levels of exit discharge, or on qualifying floors or occupiable roofs served by a complying ramp.

An elevator counted under §1009.4 must meet the referenced emergency-operation and signaling requirements, have standby power under Chapter 27 and §3003, and be accessed from an area of refuge unless one of the §1009.4.2 exceptions applies. This is distinct from asking whether Chapter 11 requires an accessible route to the floor.

3. What does the four-story stretcher provision require?

IBC §3002.4 begins with an important condition: where elevators are provided in buildings four or more stories above or four or more stories below grade plane. It does not independently require elevator installation.

When the condition applies, at least one elevator must provide fire department emergency access to all floors. Its car must be sized and arranged to accommodate an ambulance stretcher 24 inches by 84 inches with 5-inch-radius corners in the horizontal open position. The specified star-of-life identification is placed at the hoistway door frame.

This requirement is not the same as the high-rise fire service access elevator system in §3007. A conventional elevator can be the §3002.4 stretcher elevator without becoming a §3007 fire service access elevator.

4. When are fire service access elevators required?

IBC §403.6.1 applies where a building has an occupied floor more than 120 feet above the lowest level of fire department vehicle access. It requires not fewer than two fire service access elevators, or all elevators where fewer than two are provided. Each must have a capacity of at least 3,500 pounds and comply with the stretcher provision in §3002.4.

Section 3007 then governs the system. Among other conditions, it addresses:

• service to floors beginning at the lowest fire department vehicle access level, subject to listed exceptions;
• a qualifying automatic sprinkler system throughout the building, with sprinklers prohibited in the listed elevator machine/control spaces and hoistways;
• water protection, hoistway structural integrity, lighting, and protected power;
• an enclosed fire service access elevator lobby with access to an interior exit stairway or ramp;
• a 150-square-foot minimum lobby with no dimension less than 8 feet;
• monitoring at the fire command center; and
• access to a Class I standpipe hose connection in the associated interior exit enclosure.

There is no general “one elevator plus an approved backup” exception in the model-code trigger, and §3007 does not set a universal 42-square-foot cab-platform minimum. The controlling §403.6.1 criteria are number, capacity, and compliance with §3002.4 and §3007.

5. What is an occupant evacuation elevator?

An occupant evacuation elevator is a passenger elevator designed and operated for occupant self-evacuation during a fire under §3008. It is not the same as a fire service access elevator, and it is not automatically required in every building over 420 feet.

For high-rise buildings other than Group R-2 and ancillary spaces that are more than 420 feet high, §403.5.2 generally requires an additional interior exit stairway. Its first exception permits compliant occupant evacuation elevators in lieu of that additional stair. Section 403.6.2 separately permits passenger elevators installed under §3008 to be used for occupant self-evacuation.

Section 3008 requires a coordinated system rather than a cab label. The number of elevators is established by an egress analysis meeting one of the section’s time scenarios: less than one hour for full-building evacuation or less than 15 minutes for the five consecutive floors with the highest cumulative occupant load. At least one elevator in each bank is designated, with at least two in a lobby where more than one elevator opens into it.

The system also includes an approved fire safety and evacuation plan, a qualifying sprinkler system, water protection, structurally protected hoistways, protected lobbies, communication, emergency voice/alarm notification, power, and other §3008 conditions. Lobby size is occupant-load based: it must accommodate at least 25 percent of the served floor’s occupant load at 3 square feet per person, plus the prescribed wheelchair spaces.

6. How are hoistways and machine spaces protected?

Chapter 30 does not assign hoistway ratings solely from total building stories. Section 3002.1 routes vertical openings to §§712 and 713. Where a shaft enclosure is required, §713.4 generally requires:

• 2 hours where the shaft connects four stories or more; and
• 1 hour where the shaft connects fewer than four stories.

The connected-story count includes basements but not mezzanines. The shaft rating also cannot be less than the rating of the floor assembly penetrated, although it need not exceed 2 hours. Special high-rise and occupancy conditions can add requirements.

Section 3005.4 requires machine rooms, control rooms, control spaces, and machinery spaces outside the hoistway to use the specified fire barriers and/or horizontal assemblies. Their rating generally cannot be less than the required rating of the served hoistway, with two limited exceptions for systems other than fire service access and occupant evacuation elevators. The rule is not a simple “one hour if sprinklered, two hours if unsprinklered” table.

Section 3006 separately determines when hoistway-door protection or an enclosed elevator lobby is required. It evaluates the shaft, number of stories connected, sprinkler protection, occupancy, high-rise height, and corridor relationship.

Emergency operation, sprinklers, and communications

IBC §3003.2 requires elevators to provide Phase I emergency recall and Phase II emergency in-car operation in accordance with ASME A17.1/CSA B44. The model-code text does not use the old page’s “four stories or 25 feet of travel” threshold.

Section 3001.2 also requires a two-way emergency communication system with visual and audible modes in each elevator car. Where standby power is required or provided, §3003.1 governs operation and associated loads. Fire service access and occupant evacuation elevators add their own specialized power, sprinkler, monitoring, and communication conditions.

Sprinkler and shunt-trip requirements must be coordinated rather than assumed. Section 3005.5 addresses automatic power disconnect where the listed elevator spaces are protected with sprinklers. Sections 3007 and 3008 prohibit sprinklers in specified fire service access and occupant evacuation elevator spaces and prohibit the §3005.5 shutdown arrangement for those protected systems.

A practical review sequence

1. Confirm the adopted IBC edition, accessibility law, elevator code, fire code, and local amendments.
2. Map levels, mezzanines, roofs, grade plane, levels of exit discharge, and fire department vehicle access.
3. Determine which levels must be connected by an accessible route under Chapter 11.
4. Determine whether an elevator must be part of an accessible means of egress under §1009.2.1.
5. If elevators are provided, test the §3002.4 stretcher condition.
6. Test the §403.6.1 fire service access trigger and the §403.5.2/§3008 occupant-evacuation option separately.
7. Determine shaft, opening, lobby, machinery-space, power, communication, and emergency-operation requirements.
8. Coordinate ICC A117.1, ASME A17.1/CSA B44, NFPA 72, the ADA standards where applicable, and local elevator-safety rules.

Frequently asked questions

Does the IBC require an elevator in every four-story building?

No. Section 1009.2.1 can require an elevator as part of an accessible means of egress based on stories relative to the level of exit discharge, while §3002.4 applies only where elevators are provided in buildings four or more stories above or below grade plane. Chapter 11 accessible-route scoping is a separate analysis.

Is a four-story elevator automatically a fire service access elevator?

No. The §3002.4 stretcher-car condition is different from a §3007 fire service access elevator. The model-code trigger for fire service access elevators is an occupied floor more than 120 feet above the lowest fire department vehicle access level.

Does every elevator need a one- or two-hour shaft?

First determine whether the vertical opening must be enclosed. If a shaft enclosure is required, §713.4 generally uses the number of stories the shaft connects: two hours for four or more and one hour for fewer than four, subject to the floor-assembly and special-condition rules.

Are private residence elevators outside the IBC?

No. Section 3009 addresses elevators installed within one residential dwelling unit or providing access to one such unit and references ASME A17.1/CSA B44 Section 5.3, including hoistway and landing-door provisions. Their requirements are specialized, not absent.

Scope and limitations

This guide explains the unamended 2024 IBC model-code scoping paths. It does not size elevator traffic capacity, select a car or door configuration, design a fire service/evacuation system, establish federal or local accessibility compliance, or replace a vertical-transportation, fire-protection, accessibility, or authority-having-jurisdiction review.

Primary sources

• IBC 2024, Chapter 4: high-rise elevator and evacuation provisions
• IBC 2024, Chapter 10: accessible means of egress
• IBC 2024, Chapter 11: accessibility
• IBC 2024, Chapter 30: elevators and conveying systems
• IBC 2024, Chapter 7: shaft enclosures
• U.S. Department of Justice: 2010 ADA Standards and guidance

Correction history

• 2026-08-31 — Revision 1: Removed the false universal four-story elevator-installation trigger; separated Chapter 11 accessible routes, §1009 accessible egress, §3002.4 stretcher access, §3007 fire service access, and §3008 occupant evacuation; corrected shaft ratings, machine-space separation, emergency operation, sprinkler/shunt-trip, high-rise counts, car requirements, and private-residence scope; and removed unsupported venting, temperature, and automation claims.