Mike Lamb Posted April 25, 2016 Report Share Posted April 25, 2016 What do you suppose this slit in the foundation is for? There were two in this 1980's crawl. Click to Enlarge 60.45 KB Quote Link to comment Share on other sites More sharing options...
Jim Katen Posted April 25, 2016 Report Share Posted April 25, 2016 My guess is that it was a simple mistake. Someone laid a board at the bottom of the form to use it as a nailer. After stripping the form, the board remained and no one cared. Some years down the line, the board rotted. Voila! A slit in the foundation. Quote Link to comment Share on other sites More sharing options...
John Kogel Posted April 25, 2016 Report Share Posted April 25, 2016 Sometimes the spreaders are left in and the wall forms rest on them. But that looks wider and thinner than the usual planks used. Quote Link to comment Share on other sites More sharing options...
mjr6550 Posted April 26, 2016 Report Share Posted April 26, 2016 It looks similar to what is sometimes done when a crawl space is adjacent to a basement. They stop the footing short of the overdig and then bridge the foundation wall over the opening. I think I recall seeing this done when connecting interior and exterior drainage systems with a pipe passing through the footing. Normally the slab would be poured high enough to cover the opening. Quote Link to comment Share on other sites More sharing options...
Mike Lamb Posted May 19, 2016 Author Report Share Posted May 19, 2016 More of the same in a different crawl. Must be a good reason. One slit is at outside wall, the other at attached garage. Click to Enlarge 30.13 KB Click to Enlarge 40.98 KB Quote Link to comment Share on other sites More sharing options...
kurt Posted May 19, 2016 Report Share Posted May 19, 2016 Stepped footing? Is it somewhere near the transition from main basement to crawlspace? Basically, what Reinmiller is asking/pointing out. Looks like the void everyone leaves where the crawl steps (up or down) to the main foundation footing. Quote Link to comment Share on other sites More sharing options...
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