Which document serves as proof of data and quantities used for materials on-site?

The delivery receipt serves as proof of the data and quantities of materials delivered to a construction site. It typically includes details such as the type of materials, the quantities delivered, and often the date of delivery. This document is essential for verifying that the materials listed in project documentation match what has actually been received on site.

While the other options have their own purposes, they do not serve the same verification function in the context of on-site materials. For instance, a material takeoff is a calculation or list used during the planning phase of a project, detailing the quantities of materials needed; it is not an on-site proof document. An invoice represents a request for payment from the supplier and might detail costs but does not confirm that materials have been delivered to the project location. A purchase order is an agreement to buy materials but does not reflect the actual delivery confirmation, which is what the delivery receipt provides.