> For the complete documentation index, see [llms.txt](https://enercalc.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://enercalc.com/docs/sel-user-manual/appendices/appendix/appendix-a.md).

# Appendix A - Table of Horizontal Temperature and Shrinkage Reinforcing

Reference table of horizontal temperature and shrinkage reinforcing spacing for concrete and masonry walls.

| **Typical Horizontal Rebar Spacing** **for .0007 A\*\*\*\*g** **Masonry and .002 A\*\*\*\*g** **for concrete** |           |        |        |        |        |        |
| -------------------------------------------------------------------------------------------------------------- | --------- | ------ | ------ | ------ | ------ | ------ |
| ***Mat’l***                                                                                                    | **Thick** | **#3** | **#4** | **#5** | **#6** | **#7** |
| Concrete                                                                                                       | 6         | 9      | 17     | 18     | 18     | ¾      |
| Concrete                                                                                                       | 7         | 8      | 14     | 18     | 18     | ¾      |
| Concrete                                                                                                       | 8         | 7      | 12     | 18     | 18     | ¾      |
| Concrete                                                                                                       | 9         | 6      | 11     | 17     | 18     | ¾      |
| Concrete                                                                                                       | 10        | 5.5    | 10     | 15     | 18     | ¾      |
| Concrete\*                                                                                                     | 12        | 9      | 17     | 18     | 18     | ¾      |
| Concrete\*                                                                                                     | 14        | 8      | 14     | 18     | 18     | ¾      |
| Concrete\*                                                                                                     | 16        | 7      | 12     | 18     | 18     | ¾      |
| CMU                                                                                                            | 6         | 24     | 48     | 48     | 48     | ¾      |
| CMU                                                                                                            | 8         | 16     | 32     | 48     | 48     | ¾      |
| CMU                                                                                                            | 10        | 16     | 24     | 32     | 48     | ¾      |
| CMU                                                                                                            | 12        | 12     | 24     | 32     | 48     | ¾      |
| CMU                                                                                                            | 16        | 8      | 16     | 24     | 40     | 48     |

\* ACI 318-14 Section 11.7.2.3 requires two layers in walls over 10” thick, but “basement walls” are exempted, which presumably applies to retaining walls also. However, the above spacings assume that the specified rebar will be placed on each face.


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