Construction Safety Quiz On Stairways And Ladders!

A job built ladder cannot have a varying distance between steps. In order to ensure safety and stability, the distance between steps on a ladder should be consistent. Varying distances between steps can lead to instability and increase the risk of accidents while climbing or descending the ladder. Therefore, it is important for a job built ladder to have a fixed and uniform distance between steps.

The correct answer is 1 foot away for 4 feet of height 4:1. This means that for every 1 foot of height, the ladder should be placed 4 feet away from the wall or surface it is leaning against. This ratio ensures optimal performance and safety by providing a stable and secure angle for the ladder. If the ladder is placed at a steeper angle, it may be more prone to tipping over. On the other hand, if the ladder is placed at a shallower angle, it may not provide enough stability for the user.

Metal pan stairways need a temporary filler prior to concrete installation because the metal pans are not strong enough to support the weight of the concrete on their own. The temporary filler provides additional support and stability to the stairway structure during the concrete pouring process. Without the filler, the metal pans may deform or collapse under the weight of the concrete, leading to structural issues and potential safety hazards. Therefore, it is necessary to use a temporary filler before concrete installation on metal pan stairways.

A ladder should extend 3 feet above the desired landing area. This is because it provides a secure handhold for individuals getting on or off the ladder. It also helps to maintain stability and prevent accidents by ensuring that there is enough support and balance when climbing up or down the ladder.

Handrails are required to withstand a minimum force of 200lbs. This is because handrails are installed to provide support and stability to individuals using stairs or ramps. A force of at least 200lbs ensures that the handrail can bear the weight of an average person and provide the necessary support without breaking or becoming unstable.

Handrails are required in all of the mentioned scenarios. Handrails are necessary for stairs with 4 or more risers to provide support and stability while ascending or descending. They are also required for stairs higher than 30 inches to prevent falls and ensure safety. Additionally, handrails are needed for stairs less than 44 inches wide to assist individuals in maintaining balance and preventing accidents. Therefore, all of the given options indicate situations where handrails are required.

Metal ladders are not allowed on Kiewit job sites.

A break in elevation of 18 inches or more requires a step or ladder for access because it is considered a significant change in height that could pose a safety risk if not properly addressed. Steps or ladders provide a stable and secure way for individuals to navigate and climb such elevations, ensuring their safety and preventing accidents or injuries.

To ensure that the door can fully open without any obstruction, a platform of at least 20 inches is needed outside the door. This allows for the door to swing open without hitting any objects or walls, providing enough space for easy access through the door.

A self-supporting ladder must be able to withstand 4 times the intended load because it needs to provide a strong and stable support for the person using it. This ensures that the ladder can safely hold the weight of the person and any additional equipment or materials they may be carrying while climbing or working on it. By designing the ladder to withstand 4 times the intended load, it allows for a margin of safety and helps prevent accidents or structural failures.