How many copies of the plans and specifications must a contractor maintain on site?

The requirement for a contractor to maintain a specific number of copies of plans and specifications on-site is primarily for ensuring that all personnel involved in the project have access to the current and applicable documentation. Maintaining one copy allows for ease of access and reduces clutter, ensuring that workers can refer to the necessary documents without confusion over multiple versions or copies.

Having a single up-to-date copy helps streamline communication among team members and contractors, as they can all refer to the same document. This practice promotes accountability and clarity regarding the project specifications and plans.

While other options suggest more copies, which might seem beneficial for larger teams or projects, maintaining one copy is often sufficient for most operational needs, according to standard practices and guidelines in the construction industry.