When more than two spacers are used, how may they be placed?

When more than two spacers are used, how may they be placed?

• A. Adjacent to the two, or bundled loose with the spiral
• B. Opposite ends only
• C. Randomly around circle
• D. Only near the center

Answer: (A)

Maintaining uniform spacing around a group of bars is the main idea. When more than two spacers are used, tying them to the intended spacing pattern is important so the arrangement stays stable during placement. Placing spacers adjacent to the two bars ensures the gap between those bars remains constant, and bundling spacers loosely with the spiral lets the spiral carry them as the bars are formed and positioned. This keeps the concrete cover consistent all the way around the circle and prevents movement of spacers during pouring and compaction. Placing spacers only at opposite ends, or randomly around the circle, or only near the center would lead to uneven coverage and potential issues with alignment or corrosion protection.

Maintaining uniform spacing around a group of bars is the main idea. When more than two spacers are used, tying them to the intended spacing pattern is important so the arrangement stays stable during placement. Placing spacers adjacent to the two bars ensures the gap between those bars remains constant, and bundling spacers loosely with the spiral lets the spiral carry them as the bars are formed and positioned. This keeps the concrete cover consistent all the way around the circle and prevents movement of spacers during pouring and compaction.

Placing spacers only at opposite ends, or randomly around the circle, or only near the center would lead to uneven coverage and potential issues with alignment or corrosion protection.