Before climbing a portable ladder, check its rail extension, pitch, condition, inspection timing, and clearance from energized electrical equipment.
Key takeaways
- Verify the rail extension. When portable ladders are used for access to an upper landing surface, the side rails shall extend not less than 36 inches above the upper landing surface to which the ladder is used to gain access, according to California Department of Industrial Relations.
- Check the ladder pitch. Non-self-supporting ladders such as single ladders and extension ladders shall, where possible, be used at such a pitch that the horizontal distance from the top support to the foot of the ladder is one-quarter of the working length of the ladder, according to California Department of Industrial Relations.
- Inspect before the first climb. A trained ladder user must inspect the ladder prior to the user's initial use in each shift, and as necessary during the use to identify defects or damage that may occur during a work shift after the initial check, according to Washington State Legislature.
- Maintain distance from power lines. Never use a ladder or any other tools within 10 feet of energized electrical equipment such as power lines, according to Washington State Department of Labor & Industries.
What to look at on the ladder before anyone climbs
Before the first climb, verify the physical setup against the specific state rules that apply to your site. The visual check focuses on the ladder's position relative to the landing and the surrounding environment. If the ladder provides access to an upper landing surface, the side rails must extend not less than 36 inches above that surface, or if that extension is not possible, the ladder must be secured at its top to a rigid support that will not deflect and a grasping device like a grab-rail must be provided, according to California Department of Industrial Relations. For non-self-supporting ladders such as single ladders and extension ladders, the pitch must be set so that the horizontal distance from the top support to the foot of the ladder is one-quarter of the working length, where possible, according to California Department of Industrial Relations. This angle check is a positional requirement for the ladder's stability and is distinct from the rail extension height.
What California says about the rail extension and angle
California Code of Regulations, Title 8, Section 3276. Portable Ladders sets specific physical requirements for how your crew positions and maintains portable ladders. The regulation addresses the height of the side rails relative to the landing surface, the pitch of non-self-supporting ladders, and the mandatory handling of defective equipment. Check the applicable setup requirements and the ladder's condition before allowing anyone to ascend.
If such an extension is not possible, the ladder shall be secured at its top to a rigid support that will not deflect, and a grasping device, such as a grab-rail, shall be provided to assist employees in mounting and dismounting the ladder, according to California Department of Industrial Relations. This requirement applies specifically when portable ladders are used for access to an upper landing surface.
For non-self-supporting ladders such as single ladders and extension ladders, the pitch must be checked. The working length is defined as the length along the ladder between the foot and the top support. This calculation determines the base spread. You can measure the working length from the foot to the top support and divide by four to find the required horizontal distance from the top support to the foot. If the ladder is too steep or too shallow, adjust the base until the distance matches this fraction.
Illustrative example: calculating the base distance
For an illustrative working length of 20 feet, divide 20 by 4 to get a horizontal distance of 5 feet from the top support to the foot. Measure along the ladder for working length; measure horizontally for base distance. This calculation does not check rail extension or power-line clearance.
What Washington says to inspect before the first climb of the shift
Washington State Legislature rules require a trained ladder user to inspect the ladder prior to the user's initial use in each shift, according to Washington State Legislature. The inspection must also occur as necessary during the use to identify defects or damage that may occur during a work shift after the initial check, according to Washington State Legislature. This timing places the responsibility on the specific person about to climb, not just a supervisor at the start of the day. The check applies before the user's initial use in each shift.
Beyond the timing of the inspection, the Washington State Legislature specifies dimensional standards for the ladder components you are checking. You must ensure portable ladder rungs, steps, and cleats have a minimum clear width of eleven and one-half inches (29 cm), according to Washington State Legislature. This width applies to the general portable ladders your crew uses for vertical or angled access. If your site includes stepstools for lower work, the standard differs. You must ensure stepstools have a minimum clear width of ten and one-half inches (26.7 cm), according to Washington State Legislature. These measurements are minimum clear widths for the components being checked.
What Labor & Industries says about power lines and who inspects
The Washington State Department of Labor & Industries Ladder Safety page sets a hard boundary for energized equipment. It states: "Never use a ladder or any other tools within 10 feet of energized electrical equipment such as power lines" according to Washington State Department of Labor & Industries. This 10-foot clearance applies to ladders and any other tools, not just the ladder itself. The rule covers energized electrical equipment, specifically naming power lines in the text. This is a distinct safety zone separate from the ladder's physical angle or rail extension.
Who performs the inspection depends on the ladder's status. The page assigns a specific duty to a "competent person." It says: "A competent person needs to inspect the ladder before it goes into use or if its has been potentially damaged" according to Washington State Department of Labor & Industries. The competent person is the designated role responsible for this check.
The page also assigns a daily duty to the individual worker. It states: "Every ladder user needs to inspect the ladder before they use it for the day" according to Washington State Department of Labor & Industries. This is a separate requirement from the competent person's check. The two duties run in parallel: the competent person handles the initial or post-damage check, while the user handles the pre-use check for that day.
The page provides a specific tool for the competent person's inspection. It notes: "Table 1 instructions the competent person what to inspect" according to Washington State Department of Labor & Industries. This table serves as the guide for the competent person during their inspection. It defines the scope of what the competent person must look at when fulfilling their duty.
What Oregon's administrative rules list for extension ladders and section 1926.1053
Oregon Secretary of State Administrative Rules specify the physical assembly requirements for extension ladders used on job sites. According to Oregon Secretary of State, extension ladders shall be equipped with necessary guide irons, locks, and hooks. The same source states that these ladders shall be assembled so that the sliding (upper) section shall be on top of the base (lower) section. This assembly requirement defines the correct mechanical configuration for the ladder before it is positioned for use.
The Oregon Secretary of State Administrative Rules also include a citation to federal standards. According to Oregon Secretary of State, the rules reference 29 CFR 1926.1053 Ladders, published 4/11/14, FR vol. The citation does not state the ladder angle or other specific measurements found in other state guidelines. It serves as a reference to the broader federal ladder standard within the Oregon administrative framework.
When checking an extension ladder on your site, verify the presence of guide irons, locks, and hooks. Confirm that the sliding section is positioned on top of the base section. These checks align with the specific assembly language in the Oregon Secretary of State Administrative Rules.
A reference table of ladder requirements and citations
The following table lists the specific requirements and citations found in the supplied sources. Each row corresponds to a single publisher and rule.
| Publisher | Specific rule or requirement | Source citation |
|---|---|---|
| California Department of Industrial Relations | Side rails shall extend not less than 36 inches above the upper landing surface. | Title 8, Section 3276 |
| California Department of Industrial Relations | Horizontal distance from top support to foot is one-quarter of the working length. | Title 8, Section 3276 |
| Washington State Legislature | Trained ladder user must inspect prior to initial use in each shift. | WAC 296-876-30005 |
| Washington State Department of Labor & Industries | Never use a ladder within 10 feet of energized electrical equipment. | Ladder Safety |
| Oregon Secretary of State | Extension ladders assembled so sliding upper section is on top of base section. | Administrative Rules |
| Oregon Secretary of State | Lists 29 CFR 1926.1053 Ladders, published 4/11/14. | Administrative Rules |
When you review a ladder on the job site, you can use this table to verify which specific rule applies to your location. For example, if you are in California, you check the rail extension and the pitch angle as described in California Department of Industrial Relations. If you are in Washington, you confirm that the trained user has performed the shift inspection, as required by Washington State Legislature. You also verify that the ladder is not within 10 feet of power lines, a rule stated by Washington State Department of Labor & Industries. In Oregon, you ensure the extension ladder is assembled correctly with the upper section on top, as noted in the Oregon Secretary of State rules.
For other site checks, see the extinguisher travel rules.
Action step: Before the first climb today, write the date, who looked at the ladder, and whether it was tagged out or left in use. Use the daily log checklist to organize the record.
FAQ about the ladder check
How far must the rails extend on the California page?
The side rails must extend at least 36 inches above the upper landing surface, according to California Department of Industrial Relations. If such an extension is not possible, the ladder shall be secured at its top to a rigid support that will not deflect. In that scenario, a grasping device, such as a grab-rail, shall be provided to assist employees in mounting and dismounting the ladder.
How does Washington time the inspection?
A trained ladder user must inspect the ladder prior to the user's initial use in each shift, according to Washington State Legislature. The inspection must also occur as necessary during the use to identify defects or damage that may occur during a work shift after the initial check. This timing ensures the ladder is evaluated before the first climb and again if conditions change during the shift.
What does the 10-foot sentence cover?
It covers ladders and any other tools near energized electrical equipment such as power lines, according to Washington State Department of Labor & Industries. This distance requirement applies specifically to the clearance from energized electrical equipment. It does not define the ladder angle or the rail extension height.
What should you do with a damaged ladder?
Ladders that have developed defects shall be withdrawn from service for repair or destruction, according to California Department of Industrial Relations. The ladder must also be tagged or marked as "Dangerous, Do Not Use" or with similar language. This procedure prevents crew members from using a ladder that has failed the pre-climb inspection.