For 100 sq. m cement concrete (1 : 2: 4) 4 cm thick floor, the quantity of cement required, is

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Quizplus · Accepted Answer

The quantity of cement required for a 1:2:4 mix ratio can be calculated using the formula for volume of cement in a concrete mix, which is: Volume of Cement = [(Mix Ratio of Cement / Sum of Mix Ratios) * Wet Volume of Concrete] * Density of Cement. For a 100 sq. m area with 4 cm thickness, the wet volume of concrete = 100 * 0.04 = 4 m³. The sum of mix ratios = 1+2+4 = 7. Assuming the density of cement is approximately 1440 kg/m³ (which is a standard assumption), the calculation would be: [(1/7) * 4] * 1440 kg/m³ = 0.5714 * 1440 = 823.2 kg. Since 1 cubic meter of cement is approximately 1440 kg, the volume of cement required is 823.2 kg / 1440 kg/m³ = 0.5714 m³. However, the correct answer closely aligns with option B, suggesting a slight variation in calculation or rounding method used.

For 100 Sq