Stairway to Safety: The Importance of Complying with UBC When Constructing Stairs

Insights from The Candid Contractor

Constructing stairs might seem straightforward, but the devil is in the details. As The Candid Contractor, I’ve seen firsthand how critical it is to comply with the Universal Building Code (UBC) when building stairs. This blog will highlight why adherence to these standards is non-negotiable and how proper lighting can prevent accidents, particularly at night.

The Universal Building Code: Ensuring Safety and Consistency

The UBC sets clear guidelines for stair construction to ensure safety and accessibility. Two primary aspects of these guidelines include riser heights and their variance:

Riser Height

The UBC stipulates that the maximum riser height should be 7.75 inches (196.85 mm), and the minimum should be 4 inches (102 mm). These dimensions ensure that steps are easily navigable and reduce the risk of tripping.

Riser Variance

Within a flight of stairs, the difference between the tallest and shortest riser should not exceed 3/8 inch (9.5 mm). Consistency in step height is crucial because human stride and ergonomics depend on uniformity. A variance beyond this can cause missteps and falls, especially for individuals with mobility issues or those who are distracted.

Marking the Tread

Steps are best designed with a different material than the pathways so they stand out. I’m also a fan of marking treads. We use a concrete finishing tool to add score lines at the edge of the step and make it more visible. 

In this photo the edge of the cast concrete steps is marked with an edging tool that creates visible lines and improves visibility.

The Role of Lighting in Stair Safety

While adhering to UBC guidelines for step dimensions is critical, ensuring that stairs are well-lit is equally important to prevent accidents, particularly at night. Here’s why and how proper lighting can make a difference.

Simple low voltage step lights identify the change in plain. Steps are consistent in height throughout the project.

Importance of Lighting

Proper lighting helps individuals see each step clearly, preventing trips and falls. Inadequate lighting can obscure the steps, making it difficult for people to gauge their height and depth.

Side lighting is better than top lighting.
Lighting can be overdone. In this photo, a light every other step would have been adequate.

Best Practices for Lighting

Lighting steps directly or from the side is more effective than lighting from above. Top-down lighting can create shadows, which might hide the steps’ edges and height, leading to accidents. Step lighting or side lighting ensures each step is illuminated evenly, highlighting the tread and riser distinctly.

Top-down lighting can create shadows and obscure step heights.

Legal and Financial Implications

Failing to comply with UBC standards and ignoring proper lighting can lead to severe legal and financial repercussions.

Lawsuits

Non-compliant stairs are a common cause of accidents and subsequent lawsuits. Property owners and contractors can be held liable for injuries resulting from poorly constructed or inadequately lit stairs.

9 inch steps are too tall and exceed the building code by over an inch.

Insurance Claims

Insurance companies may deny claims if it’s proven that UBC guidelines were not followed, leaving property owners to cover medical and legal expenses out-of-pocket.

Take it from The Candid Contractor

As someone who has witnessed the consequences of non-compliance, I can’t stress enough the importance of adhering to UBC standards. Consistent riser heights and proper lighting are not just regulatory requirements; they are essential for safety and preventing accidents. Whether you’re a homeowner, property manager, or contractor, ensure that every staircase you build or maintain meets these standards. It’s not just about compliance; it’s about creating safe environments for everyone.

Contractors Take Note

By prioritizing these guidelines, you not only protect yourself from legal troubles but also contribute to a safer, more accessible built environment. Remember, a well-constructed and well-lit staircase can make all the difference.

For more insights on construction best practices and to stay updated on industry standards, stay tuned to The Candid Contractor.


The Candid Contractor: Bringing you straightforward advice and expert knowledge to ensure your construction projects are safe, compliant, and built to last.

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