If you use ladders for work or home projects, you might be wondering how far apart ladder rungs should be. Proper rung spacing provides consistent footing and makes climbing safer.
However, the required distance can vary depending on the ladder type and applicable safety standards. Whether you’re choosing a new ladder or checking an existing one, knowing the standard spacing requirements can help you determine whether it meets the relevant safety guidelines.
Standard Spacing Between Ladder Rungs
For many fixed and portable ladders, rung spacing should be between 10 and 14 inches apart, measured from the centerline of one rung to the centerline of the next.
However, some ladder types have different spacing requirements. For example, step stools generally have step spacing of 8 to 12 inches. Certain specialized ladders also have exceptions, so check the applicable safety requirements for the specific ladder type.
Rung Spacing Requirements by Ladder Type
Different ladder types may have different rung or step spacing requirements. The correct spacing depends on the ladder’s design and the safety standards that apply to it.
Fixed Ladders
Fixed ladders are permanently attached to buildings, towers, or other structures. Their rung spacing is generally between 10 and 14 inches, measured from the centerline of one rung to the centerline of the next.
Some fixed ladders have different spacing allowances. For example, certain fixed ladders in elevator shafts may have spacing of 6 to 16.5 inches, measured along the ladder side rails. Certain fixed ladders on telecommunications towers may have spacing of up to 18 inches.
Portable Ladders
Portable ladders include straight ladders, extension ladders, and other ladders that can be moved from one place to another. Their rungs should generally be spaced between 10 and 14 inches apart.
The rungs should be evenly spaced to provide consistent footing while climbing. Always follow the manufacturer’s instructions when setting up and using a portable ladder.
Step Stools
Step stools have a different design from traditional ladders, so their spacing requirements may vary. The required distance between steps is generally between 8 and 12 inches for step stools covered by the relevant safety requirements.
Check the manufacturer’s instructions and applicable safety requirements to confirm the correct spacing for the specific step stool.
Special Ladder Types
Some ladders have special designs or are used for specific purposes, so their rung spacing requirements may differ from the general rule.
For example, extension trestle ladders have different spacing requirements for their base and extension sections. The base section requires rung spacing of 8 to 18 inches, while the extension section requires spacing of 6 to 12 inches.
Always check the applicable safety requirements and manufacturer’s instructions to confirm the correct spacing for a particular ladder.
How to Measure Ladder Rung Spacing
Measuring rung spacing correctly helps you determine whether a ladder meets the required dimensions. Follow these steps:
- Choose two adjacent rungs: Select two rungs directly above and below each other.
- Find the center of each rung: Identify the midpoint of each rung’s surface.
- Measure the distance: For most ladders, measure from the centerline of one rung to the centerline of the next. For certain fixed ladders in elevator shafts, measure the spacing along the ladder side rails.
- Compare the measurement: Check the result against the spacing requirements for that ladder type.
For example, if the distance between two rung centerlines is 12 inches, it falls within the general 10-to-14-inch range used for many fixed and portable ladders.
Why Proper Ladder Rung Spacing Matters
Correct rung spacing helps make climbing safer and more comfortable. Here are the main reasons it matters:
- Better footing: Consistent spacing helps you place your feet on each rung more naturally.
- Improved balance: Regular rung intervals make it easier to maintain a steady climbing rhythm.
- Reduced fall risk: Proper spacing helps prevent awkward steps that may cause you to lose balance.
- Safer access: Correctly spaced rungs make it easier to climb to and from elevated work areas.
Ladder Safety Tips to Follow
Even when rung spacing meets the required standards, you still need to use the ladder correctly. Follow these basic safety tips:
- Inspect the ladder before each use for loose, cracked, bent, or damaged rungs.
- Keep the rungs clean and dry to reduce the risk of slipping.
- Place the ladder on a firm, level surface.
- Maintain three points of contact while climbing whenever possible.
- Face the ladder when climbing up or down.
- Avoid carrying heavy or bulky objects that could affect your balance.
- Follow the manufacturer’s instructions for setup, use, and weight limits.
If a ladder has damaged rungs or spacing that does not meet the applicable requirements, do not use it until the issue has been properly addressed.
Final Words
Ladder rungs on many fixed and portable ladders should be spaced between 10 and 14 inches apart, measured from centerline to centerline. However, the correct spacing can vary by ladder type and applicable safety requirements. Always inspect the ladder and follow the relevant safety standards and manufacturer’s instructions before use.
Related guide: How Far Are Cornhole Boards Supposed to Be Apart?
Frequently Asked Questions
What Is the Standard Distance Between Ladder Rungs?
For many fixed and portable ladders, the standard distance is between 10 and 14 inches, measured from centerline to centerline. Requirements can vary for certain ladder types.
How Far Apart Are Steps on a Ladder?
For many fixed and portable ladders, the steps (also called rungs) should be between 10 and 14 inches apart, measured from centerline to centerline. Step stools are different, as their steps are generally spaced 8 to 12 inches apart
Should Ladder Rungs Be Evenly Spaced?
Yes, ladder rungs should generally be evenly spaced to provide consistent footing while climbing. Uneven spacing can make climbing less predictable and increase the risk of losing balance.
How Far Apart Should Step Stool Steps Be?
Step stool steps should generally be spaced between 8 and 12 inches apart for models covered by the relevant safety requirements. Check the manufacturer’s instructions to confirm the correct spacing for your step stool.
How Do You Measure the Distance Between Ladder Rungs?
Measure from the centerline of one rung to the centerline of the next rung. This provides a consistent measurement for comparing the spacing with the relevant safety requirements.
Can Ladder Rungs Be Spaced More Than 14 Inches Apart?
For many fixed and portable ladders, rung spacing should not exceed 14 inches. However, certain specialized ladders have different spacing requirements, so check the applicable safety guidelines to determine whether a ladder meets the requirements for its type.
