When only two spacers are used, where are they placed?

When only two spacers are used, where are they placed?

• A. Opposite ends
• B. Top and bottom
• C. Adjacent to each other
• D. Random around circle

Answer: (A)

Keeping reinforcement properly positioned inside the form is about ensuring the bars stay at the required distance from each other and from the forms during the pour. When only two spacers are used, placing them at opposite ends anchors the bars at both ends, preventing movement along the length and maintaining consistent cover and spacing throughout the run. This setup stops the bars from shifting toward one side or tilting during vibration and pouring. If spacers were placed at top and bottom, adjacent to each other, or randomly around the circle, the bars wouldn’t be reliably held in the correct orientation or maintain even spacing, which could compromise the concrete’s strength and durability. So opposite ends is the best placement when only two spacers are used.

Keeping reinforcement properly positioned inside the form is about ensuring the bars stay at the required distance from each other and from the forms during the pour. When only two spacers are used, placing them at opposite ends anchors the bars at both ends, preventing movement along the length and maintaining consistent cover and spacing throughout the run. This setup stops the bars from shifting toward one side or tilting during vibration and pouring. If spacers were placed at top and bottom, adjacent to each other, or randomly around the circle, the bars wouldn’t be reliably held in the correct orientation or maintain even spacing, which could compromise the concrete’s strength and durability. So opposite ends is the best placement when only two spacers are used.