Concrete and reinforcement in flat insulating concrete form walls not exceeding 2 storeys in building height and having a maximum floor to floor height of 3 m, in buildings of light-frame construction containing only a single dwelling unit to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for the application of Part 9], in regions where spectral response acceleration, S_a(0.2), is not greater that 0.4.

To limit the probability of the use of:

• inappropriate or substandard concrete,
• inappropriate or substandard reinforcing, or
• insufficient overlap of reinforcing bars.

This is to limit the probability of the inadequate performance or premature failure of flat insulating concrete form walls under expected environmental or structural loads.

This is to limit the probability of:

• compromised structural integrity, or
• where concrete supports or is used in an environmental separator, the displacement or failure of required environmental separation elements, which could lead to the deterioration of building elements, which could lead to compromised structural integrity.

This is to limit the probability of:

• excessive deflection or vibration of supported wood-frame floors or steps, which could lead to persons losing their balance, tripping or falling, and
• the failure of fireplaces or chimneys, which could lead to the leakage of combustion products, including carbon monoxide gas, into living space, which could lead to the asphyxiation or acute poisoning of persons.

This is to limit the probability of harm to persons.