What is 0.5 psig in "inches W.C."?

To convert pressure from pounds per square inch gauge (psig) to inches of water column (inches W.C.), it's essential to know the relationship between these two units. Specifically, 1 psi is equivalent to approximately 27.68 inches of water column.

When converting 0.5 psig to inches W.C., the calculation is as follows:

0.5 psig × 27.68 inches W.C./psi = 13.84 inches W.C.

Rounding this value gives approximately 14 inches W.C., which corresponds to the correct answer. Understanding this conversion factor highlights the importance of accurate unit conversions in pressure measurements, especially in applications involving gas appliances and safety regulations.