Which of the Following Is Required on Any Building That

question 15

Multiple Choice

Which of the following is required on any building that has parapet walls or any other construction that extends above the roof?

• A)controlled-flow systems
• B)siphonic roof drains
• C)secondary roof drains
• D)downspouts

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Definitions:

Isotopes

Variants of a particular chemical element that differ in neutron number, and consequently in nucleon number, but have the same number of protons in their nuclei.

Atomic Number

The number of protons found in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.

Hydrogen

The lightest and most abundant chemical element in the universe, consisting of just one proton and often one electron.

Neutrons

Subatomic particles found in the nucleus of an atom, with no electrical charge and a mass slightly greater than that of protons.