[amp_mcq option1=”One diameter” option2=”2.5 diameters” option3=”3 diameters” option4=”3.5 diameters” correct=”option3″]
The correct answer is C. 3 diameters.
The minimum spacing between horizontal parallel reinforcement of the same size should not be less than 3 diameters. This is to ensure that the reinforcement is adequately spaced to provide the required strength and ductility.
Option A is incorrect because it is not a sufficient spacing to provide the required strength and ductility. Option B is incorrect because it is not a common spacing used in practice. Option D is incorrect because it is a greater spacing than is required.