Crawl Space, Excavated

An excavated foundation area below a residence, less than 5 feet in depth, that is generally used for access to plumbing and heating equipment. It can also be used for storage.

Note: When entering this foundation type you must enter the following:

• Enter the percentage of each type of foundation between 0 and 100 making sure that the total is at least 100%.
• Enter the percentage of each foundation material type (concrete, block, brick or fieldstone, steel, or wood) with a total percentage of 100%.The only appropriate choice for material type for the “Crawl Space, Excavated, Concrete with Slab” is “Concrete” even though there are other options to choose from.

NOTE: Foundations Built on Unsatisfactory Soil Conditions

There are 3 additional Crawl Space, Excavated options for homes built on expandable soil, collapsible soil, or other subterranean conditions that warrant a stronger foundation. All of the additional foundations for Unsatisfactory Soil Conditions are constructed with concrete. Therefore, “Concrete” must be selected as the “Foundation Material”.

In order from better to worse soil condition, the additional three options are “Crawl Space, Excavated - Moderate Soil”, “Crawl Space, Excavated - Poor Soil”, and “Crawl Space, Excavated - Severe Soil”.

Additions to the standard Crawl Space, Excavated selection for each soil condition are as follows:

“Crawl Space, Excavated - Moderate Soil” includes Geotechnical Engineering to determine the prescriptive measures necessary to construct the foundation, over-digging of the foundation area to remove the unsatisfactory soil and replace it with good soil, reinforced concrete slab poured over void forms, and a reinforced concrete foundation wall.

“Crawl Space, Excavated - Poor Soil” includes Geotechnical Engineering to determine the prescriptive measures necessary to construct the foundation, reinforced concrete slab poured over void forms, reinforced concrete caissons supporting reinforced concrete grade beams under the foundation walls, and reinforced concrete foundation walls.

“Crawl Space, Excavated - Severe Soil” Geotechnical Engineering to determine the prescriptive measures necessary to construct the foundation, structural concrete slab poured over void forms, concrete-filled steel micro piles supporting reinforced concrete grade beams under the foundation walls, and reinforced concrete foundation walls.