Which of the following is untrue pertaining to facility construction characteristics?
i. Calculations of approximate penetration times for different types of explosives and attacks are based on the thickness of the concrete walls and the gauge of rebar used.
ii. Using thicker rebar and properly placing it within the concrete provides increased protection.
iii. Reinforced walls, rebar, and the use of double walls can be used as delaying mechanisms.
iv. Steel rods encased in concrete is referred to as rebar.

A.
iii
B.
i, ii
C.
All of them
D.
None of them
Explanation:
Calculations of approximate penetration times for different types of
explosives and attacks are based on the thickness of the concrete walls and the
gauge of rebar used. (Rebar refers to the steel rods encased within the concrete.)
So even if the concrete were damaged, it would take longer to actually cut or break
through the rebar. Using thicker rebar and properly placing it within the concrete
provides even more protection. Reinforced walls, rebar, and the use of double walls
can be used as delaying mechanisms. The idea is that it will take the bad guy longer
to get through two reinforced walls, which gives the response force sufficient time
to arrive at the scene and stop the attacker.
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