What is the maximum allowable height of the shear section in relation to the main surface that supports the dispenser?

The maximum allowable height of the shear section in relation to the support surface of the dispenser is established to ensure both stability and safety of the dispenser installation. A height limit of one-half inch is set to prevent excessive movement or displacement of the dispenser, which can occur if the shear section is too high. This height ensures that the dispenser remains securely anchored to its supporting structure while allowing some flexibility in case of minor shifts or adjustments. Adhering to this limit is crucial for maintaining the integrity of the installation and minimizing risks associated with potential leaks or spills from the sub-surface tanks that might occur due to a malfunctioning dispenser.