What is the maximum distance apart that intermediate members used on scaffolding, such as balusters or additional rails, can be?

The maximum distance apart for intermediate members such as balusters or additional rails on scaffolding is 19 inches. This specification is crucial for ensuring safety and structural integrity on scaffolding. Intermediate members serve the purpose of providing adequate support and preventing falls, and establishing a maximum spacing helps to ensure that these safety measures are effective.

By limiting the distance between intermediate supports to 19 inches, it reduces the risk of a worker slipping through gaps, and maintains the overall stability of the scaffolding structure. This measurement is based on established safety guidelines and regulations designed to protect workers at height, ensuring that there are enough support elements to prevent accidents.

Other options, while plausible distances, do not comply with the safety standards set for scaffolding. Distances greater than 19 inches would potentially increase the risk of failure or accidents, making it essential to adhere to the maximum specified spacing for intermediate members.