What chart should be used to calculate start and end readings to determine the amount of asphalt used?

The distributor chart is essential for calculating start and end readings to determine the amount of asphalt used during paving operations. This chart provides the necessary data related to the asphalt distributor's operation, including the pressure and speed settings that affect the flow of asphalt. By accurately using the distributor chart, a worker can ensure that the correct volume of asphalt is applied to the pavement surface, which is critical for achieving the desired thickness and ensuring proper bonding.

Using a distributor chart allows for precise measurements, making it easier to track the quantity used and adjust application rates as needed during the paving process. This is vital for maintaining quality control and ensuring compliance with specifications set forth by the Florida Department of Transportation (FDOT).

The other options, while related to asphalt paving, do not directly address the calculation of asphalt amounts based on distributor readings. For instance, a temperature correction chart deals with adjusting temperatures for various materials, a yield calculation chart focuses on the efficiency of materials consumed versus produced, and a thickness adjustment chart pertains to changes in layer thickness rather than measuring asphalt usage directly. Thus, the distributor chart is the most relevant and useful tool for this particular task.