23+ How To Build A Crawl Space Foundation Pics. An accompanying chart lists typical spans for floor girders. The majority (54%) have a slab foundation, meaning that it is still the most popular choice.
The only solution is to create a new access door.
Over the years, as plantings grow and modifications are made, the location of the original access could become extremely inconvenient. The crawl space provides air circulation under the house, helping to keep your rooms cooler in summer. Doing so, however, requires cutting through cement block and building a new door. The depth will depend on the type of foundation.