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A monolithic slab differs from a slab with separate footings in that the monolithic version:

Correct Answer

B) Is poured as a single unit with thickened edges

Why this is correct: A monolithic slab differs from a slab with separate footings in that the monolithic version is poured as a single unit with thickened edges. The slab and the footing are integrated into one concrete pour, where the perimeter is thickened to bear the structural load. This method is faster and often more economical. Why the other choices are wrong: "Requires no steel reinforcement of any kind at all" is false; reinforcement is often used. "Can only be used in warm climates" is incorrect; it can be used in colder climates with frost-protection measures. "Rests directly on undisturbed bedrock" describes a specific foundation condition, not a defining feature of monolithic slabs. Exam tip: Monolithic means 'single pour.' The thickened edge acts as the footing.

Answer Options
A
Requires no steel reinforcement of any kind at all
B
Is poured as a single unit with thickened edges
C
Can only be used in warm climates
D
Rests directly on undisturbed bedrock

Why This Is the Correct Answer

Why this is correct: A monolithic slab differs from a slab with separate footings in that the monolithic version is poured as a single unit with thickened edges. The slab and the footing are integrated into one concrete pour, where the perimeter is thickened to bear the structural load. This method is faster and often more economical. Why the other choices are wrong: "Requires no steel reinforcement of any kind at all" is false; reinforcement is often used. "Can only be used in warm climates" is incorrect; it can be used in colder climates with frost-protection measures. "Rests directly on undisturbed bedrock" describes a specific foundation condition, not a defining feature of monolithic slabs. Exam tip: Monolithic means 'single pour.' The thickened edge acts as the footing.

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