Never use the ladder as a platform. Never lean the stepladder against the wall. The “spreaders” must be extended and locked.
When a ladder is leaned against a wall, the bottom of the ladder should be one-quarter of the ladder's working length away from the wall. For access to an elevated work surface, extend the top of the ladder three feet above that surface or secure the ladder at its top.
The correct angle for a ladder is 75 degrees or the 1 in 4 rule.
Use a 4:1 ratio for setting ladders (approximately 75 degrees) - for every four feet in height, the base of the ladder should be moved one foot out from the wall or structure.
The LEANSAFE Ladder is both OSHA and ANSI compliant and is available in five sizes—4′, 6′, 8′, 10′, and 12′ high.
Proper Set Up of the Ladder
Use the 4-to-1 rule: Make sure the ladder is 1 foot away from the wall for every 4 feet that the ladder rises. For example, if the ladder touches the wall 16 feet above the ground, the feet/base of the ladder should be 4 feet from the wall.
By understanding and addressing the top three OSHA-cited ladder violations—improper usage, lack of inspections, and improper setup—employers can create a safer environment for workers. Regular ladder inspections, proper setup techniques, and worker training are all essential to ensure ladder safety.
A ladder is leaning against the wall. At the base of the ladder, there are two forces acting, the normal force of the floor on the ladder and the frictional force. At top of the ladder there is a normal force due to the wall. The gravitational force is acting at the center of the ladder.
Improper placement is one of the leading causes of ladder accidents. Placing a ladder on uneven or unstable ground increases the risk of it slipping or tipping over, causing you to fall. Neglecting to secure the base of the ladder further compounds this risk.
This placement means the bottom section "faces" a wall or other supporting surface (see figures below). Place the ladder feet so that the horizontal distance between the feet and the top support is 1/4 of the working length of the ladder. The ladder will be leaning at a 75 degree angle from the ground.
For every 4 feet of height, position the base of the ladder 1 foot away from the wall. In other words, the distance between the wall and the base of your ladder should be one quarter of the ladder's height (putting the ladder at a 75° angle).
Fixed ladders shall be used at a pitch no greater than 90 degrees from the horizontal, as measured to the back side of the ladder. Ladders shall be used only on stable and level surfaces unless secured to prevent accidental displacement.
What does it mean to "climb the ladder?" It's simple; climbing the ladder simply means moving ahead with your life. That said, climbing a ladder that's leaning against the wrong wall means that you are moving ahead in your life, but in a way that's not getting you to where you want to go.
The 75 Degree Angle Ladder Rule
It basically explains that the ladder should be leaning at a 75 degree angle against the surface. The correct angle is more easily achieved by following the 4 to 1 ladder rule, rather than placing the ladder and measuring the angle until you get it right.
Do not let the top of the ladder rest on a gutter, window sash, windowpane, or anything that can break or move. Use wall grips on the risers to prevent side slipping when a ladder is leaning against a smooth surface.
You can see that it is impossible for the ladder to lean against the wall if there is no friction force between the ladder and the ground. The net horizontal force will not be zero and it will move to the left and slip down.
Using the Wrong Ladder
Use the right type for the job, as settled by the risk assessment. It's also unsafe to work from the top three rungs of any leaning ladder or the top three steps of any step ladder. Ignoring this rule can lead to overbalancing, a consistent cause of ladder accidents.
This is a crucial time to reflect on ladder safety, especially considering the alarming statistics. In 2023, the American Academy of Orthopedic Surgeons reported that 500,000 people were treated for ladder-related injuries, with 300 of these incidents proving fatal.
DO NOT use ladders with broken or missing steps, rungs, cleats, safety feet, side rails, or other defects. Keep the ladders free of oil, grease, or slippery materials all the time by cleaning frequently.
Lean the ladder against a wall at a vertical to horizontal ratio of 4:1.
Per OSHA regulations, traditional step ladders should never be leaned directly against a vertical surface because they are designed to be exclusively self-supporting.
Tie the ladder to a suitable point, making sure both stiles are tied. Where this is not practical, secure the ladder with an effective ladder stability device. If this is not possible, securely wedge the ladder (eg wedge the stiles against a wall) If you cannot achieve any of these options, foot the ladder.
This requirement ensures that all modifications align with current safety standards, offering improved protection for climbers. Furthermore, by November 18, 2036, all fixed ladders over 24 feet must be retrofitted with a PFAS or ladder safety system, regardless of whether the existing safety cage is removed.