2207 Steel Joists — 2025 California Building Code

The design, manufacture and use of open-web steel joists and joist girders shall be in accordance with either SJI 100 or SJI 200, as applicable.

2207.1.1 Seismic design. Where required, the seismic design of buildings shall be in accordance with the additional provisions of Section 2202.2 or 2206.1.1.

The registered design professional shall indicate on the construction documents the steel joist and steel joist girder designations from SJI 100 or SJI 200; and shall indicate the requirements for joist and joist girder design, layout, end supports, anchorage, bridging design that differs from SJI 100 or SJI 200, bridging termination connections and bearing connection design to resist uplift and lateral loads. These documents shall indicate special requirements as follows:

1. Special loads including:

1.1. Concentrated loads.

1.2. Nonuniform loads.

1.3. Net uplift loads.

1.4. Axial loads.

STEEL

1.5. End moments.

1.6. Connection forces.

2. Special considerations including: 2.1. Profiles for joist and joist girder configurations that differ from those defined by SJI 100 or SJI 200. 2.2. Oversized or other nonstandard web openings.

2.3. Extended ends.

3. Deflection criteria for joists and joist girder configurations that differ from those defined by SJI 100 or SJI 200.

The steel joist and joist girder manufacturer shall design the steel joists and steel joist girders in accordance with SJI 100 or SJI 200 to support the load requirements of Section 2207.2. The registered design professional shall be permitted to require submission of the steel joist and joist girder calculations as prepared by a registered design professional responsible for the product design. Where requested by the registered design professional, the steel joist manufacturer shall submit design calculations with a cover letter bearing the seal and signature of the joist manufacturer’s registered design professional. In addition to the design calculations submitted under seal and signature, the following shall be included:

1. Bridging design that differs from SJI 100 or SJI 200, such as cantilevered conditions and net uplift.
2. Connection design for: 2.1. Connections that differ from SJI 100 or SJI 200, such as flush-framed or framed connections.

2.2. Field splices.

2.3. Joist headers.

Steel joist placement plans shall be provided to show the steel joist products as specified on the approved construction documents and are to be utilized for field installation in accordance with specific project requirements as stated in Section 2207.2. Steel joist placement plans shall include, at a minimum, the following:

1. Listing of applicable loads as stated in Section 2207.2 and used in the design of the steel joists and joist girders as specified in the approved construction documents.
2. Profiles for joist and joist girder configurations that differ from those defined by SJI 100 or SJI 200.
3. Connection requirements for:

3.1. Joist supports. 3.2. Joist girder supports. 3.3. Field splices. 3.4. Bridging attachments. 4. Deflection criteria for joists and joist girder configurations that differ from those defined by SJI 100 or SJI 200. 5. Size, location and connections for bridging.

6. Joist headers.

Steel joist placement plans do not require the seal and signature of the joist manufacturer’s registered design professional.

[OSHPD 1R, 2 & 5] Not permitted by OSHPD.

At completion of manufacture, the steel joist manufacturer shall submit a certificate of compliance to the owner or the owner’s authorized agent for submittal to the building official as specified in Section 1704.5 stating that work was performed in accordance with approved construction documents and with SJI 100 or SJI 200, as applicable.

The chords of all joists shall be laterally supported at all points where the chords change direction.