All three combine to form a "living infrastructure" that, unlike pipes and vaults, increase in functional value over time.

"Cigarettes have a totally different functional value for black and white kids," she said.

Property such as antiques and collections are eligible only to the extent of their functional value.

But when the staff members talk about the rooftop, they say the garden has taken on a symbolic importance that overshadows its functional value.

The first is the functional value of an object; its instrumental purpose.

For many people, the functional value of the footwear is much more important than the way it looks.

The item may have a digital social capital value, esthetic or functional value.

In the colonial period, tin was worked for its functional rather than aesthetic value.

A problem with the above approach arises when the functional value is zero.

But it is comfortable, functional and good value.