Ventilation and Flow
Incorrectly vented fabrications are the most common fault of a fabrication and the most important to get right.
Molten zinc is 93% of the specific gravity of steel, which means it’s difficult to sink. A small amount of air trapped in a hollow steel section could mean that the fabrication will float and not galvanize correctly. This will leave a burned surface, incomplete internal protection and poor surface finish.
Examples of a typical hollow section post with a base plate are shown below. The principles apply to all hollow sections.
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