Scaffolding Safety: Construction Safety Standards Quiz!

Explanation
The explanation for the given correct answer is that the rated load capacity for three-person scaffolding is indeed 250 pounds placed at the center of the span and 250 pounds placed 18 inches to the left and right of the center span. This means that the total load capacity for the scaffolding is 750 pounds. Therefore, the statement "True" is the correct answer.

Explanation
The given answer is correct because these requirements are necessary for scaffolding access. Safe access is essential to ensure the safety of workers when climbing up and down the scaffold. The bottom access rung should not be more than 24" high to make it easier for workers to reach the scaffold. Rest platforms at 35-foot intervals provide a resting area for workers and prevent fatigue. Only end frames with built-in ladders that have rungs 8" apart can be used for access to ensure stability and proper climbing support. The base plate or foot of the scaffold leg needs to contact the ground on all four sides for stability and balance.

Explanation
At the start of each shift, conducting an inspection of the scaffolding is necessary to ensure its safety and stability. This inspection helps identify any potential hazards or damage that may have occurred since the previous shift. By conducting regular inspections, any issues can be addressed promptly, preventing accidents or injuries that could result from using unsafe scaffolding. Therefore, it is important to conduct an inspection at the beginning of each shift to maintain a safe working environment.

Explanation
When overlapping OSHA planks on a scaffold frame, the minimum overlap required is 6 inches and the maximum overlap required is 12 inches. This ensures that the planks are securely connected and provides stability to the scaffold structure. It allows for proper weight distribution and reduces the risk of accidents or plank displacement.

Explanation
The correct answer is a combination of all the given options. For scaffold platform construction, it is necessary to have platforms that are fully planked or decked to ensure stability and safety. Additionally, there should not be more than a 1-inch gap between planks to prevent any accidents or injuries. The scaffold platforms and walkways must also be at least 20" wide to provide enough space for workers to move around comfortably and safely. Lastly, a yellow tag hanging on the scaffold during construction serves as a visual indication that the scaffold is being used and warns others to be cautious in the area.

Explanation
The statement "You do not want to distribute the load on a scaffold over the support" is incorrect. When using a scaffold, it is important to distribute the load evenly across the supports to ensure stability and safety. By distributing the load, the weight is spread out and prevents excessive stress on any one support, reducing the risk of collapse or failure. Therefore, the correct answer is False.

Explanation
A screw jack should never extend more than 1/2 of its length because exceeding this limit can cause instability and potential damage to the jack. It is important to maintain a safe working load and avoid overextending the jack beyond its recommended capacity to ensure proper functioning and prevent accidents.

Explanation
A cross brace can be installed at the appropriate height to act as the top rail or mid rail on a scaffold's handrail. Cross braces are horizontal bars that provide stability to the scaffold structure and prevent it from swaying or collapsing. They are typically placed diagonally between the vertical posts of the scaffold, creating a rigid framework. By positioning the cross brace at the appropriate height, it can serve as a handrail, ensuring the safety of workers by preventing falls from the scaffold.

Explanation
Setting up a scaffold out of plumb, even if it is only 5 frames tall or less, is not okay. Plumb refers to the vertical alignment of the scaffold, and it is important to ensure that the scaffold is level and straight to maintain stability and safety. Any deviation from plumb can compromise the integrity of the scaffold and increase the risk of accidents or collapses. Therefore, it is not acceptable to set up a scaffold out of plumb, regardless of its height.

Explanation
The correct answer is "Daily with all other scaffold". This means that a stair tower should be inspected daily, just like any other scaffold, to ensure its safety and identify any potential issues or hazards. Regular inspections are important to prevent accidents and maintain the integrity of the structure.