What is the recommended distance between rebar in concrete construction?

In concrete construction, the recommended distance between rebar, often referred to as the spacing, is critical for ensuring the structural integrity and strength of the concrete. The common practice for typical reinforced concrete is to place rebar at intervals of 12 inches, although certain variables such as load requirements, the type of concrete, and environmental conditions can influence this spacing.

When selecting a distance of 15 inches, which is not the most conventional spacing, it may still be acceptable in specific scenarios or regional codes. However, it is generally seen as more acceptable to stick with recognized standards like 12 inches for standard reinforced slabs. In many cases, building codes and best practices will stipulate that rebar should not be spaced too far apart to prevent the concrete from cracking under tension.

Choosing a distance greater than recommended could lead to weak points in the concrete structure. Therefore, 12 inches is considered a safer and more reliable distance for rebar placement. Understanding the context and requirements of your specific project will help in making informed decisions about rebar placement.