OSHA Standards: How to Choose Between Stairs and Ladders

When planning access equipment for factories and warehouses, it is necessary to choose the appropriate equipment, such as stairs or fixed ladders, depending on the intended use and installation conditions. An incorrect selection may not only hinder the safety of workers but also fail to meet OSHA standards, potentially requiring corrective action.

OSHA stipulates different requirements depending on the type of access equipment and the installation angle. To help you decide whether to choose stairs or fixed ladders, this article explains the differences in the applicable standards and the safety measures required for each.

OSHA Classification Standards by Angle

OSHA stipulates a range of 30 to 50 degrees from the horizontal for standard stairs and 50 to 70 degrees for ship stairs. On the other hand, for fixed ladders, it is stated that those with a pitch exceeding 90 degrees from the horizontal cannot be used. When installing stairs and fixed ladders, please check the OSHA requirements applicable to each.

When to Consider Installing Stairs

Stairs are suitable for routes that workers frequently travel or places where climbing up and down with tools or materials is expected. In areas that serve as routes for multiple people or double as emergency evacuation routes, it is important to plan the access equipment after verifying the necessary safety requirements.

When to Consider Installing Fixed Ladders

In environments where stairs cannot be installed due to limited installation space, you may choose a fixed ladder. They are commonly adopted as a means of access to rooftop equipment or tanks.

However, upon installation, fall protection requirements based on length and the time of installation must be met. In particular, equipment with a total length exceeding 24 feet (approx. 7.3 m) may require strict safety measures such as Personal Fall Arrest Systems (PFAS) or ladder safety systems. For detailed regulations, please refer to standards such as OSHA 1910.28(b)(9).

Different Safety Measures for Stairs and Ladders

How to Choose the Right Access Equipment for Your Facility

Choosing between stairs and ladders requires a comprehensive judgment based on multiple factors, not just the angle, but also traffic frequency, the presence of carried objects, installation space, and emergency evacuation routes. It is essential to thoroughly check the facility's intended use and installation conditions, leading to the planning of access equipment that meets OSHA application requirements.

If You Are Considering OSHA-Compliant Stairs or Fixed Ladders

When installing access equipment in factories or warehouses, you are required not only to choose between stairs and fixed ladders but also to ensure that the applicable OSHA requirements are met based on the intended use and frequency of use.

If you are considering specifications suitable for your company, such as standard industrial stairs, roof access stairs, or fixed ladders for maintenance, try consulting with experienced manufacturers or specialists from the initial design stage. By receiving accurate support, from organizing project conditions to confirming safety standards, you will be able to proceed with your plan smoothly.