Hello, just wanted some clarification as to the wording of R408.6 Finished Grade.
"The finished grade of under-floor surface shall be permitted to be located at the bottom of the footings; however, where there is evidence that the groundwater table can rise to within 6 inches (152 mm) of the finished floor at the building perimeter or where there is evidence that the surface water does not readily drain from the building site, the grade in the under-floor space shall be as high as the outside finished grade, unless an approved drainage system is provided."
How does one determine "evidence" of how high the groundwater table can rise, or that the surface water does not readily drain from the building site? Would it be something seen in the original soil report of the site (attached)?
I live in a swampy area with a high water table, our home had a 6ft crawl space dug, and have had issues with significant amounts standing water in our crawl space. Our builder did not install a foundation drain system, even though it was recommended in the soil report (Utah code amendment allows this recommendation to be ignored unless it is explicitly required in the soil report). Furthermore we signed an amendment to our agreement that cleared them of any liability related to the soils in our area. I'm wondering if our builder violated any codes that may have resulted in the wet crawl space.
"The finished grade of under-floor surface shall be permitted to be located at the bottom of the footings; however, where there is evidence that the groundwater table can rise to within 6 inches (152 mm) of the finished floor at the building perimeter or where there is evidence that the surface water does not readily drain from the building site, the grade in the under-floor space shall be as high as the outside finished grade, unless an approved drainage system is provided."
How does one determine "evidence" of how high the groundwater table can rise, or that the surface water does not readily drain from the building site? Would it be something seen in the original soil report of the site (attached)?
I live in a swampy area with a high water table, our home had a 6ft crawl space dug, and have had issues with significant amounts standing water in our crawl space. Our builder did not install a foundation drain system, even though it was recommended in the soil report (Utah code amendment allows this recommendation to be ignored unless it is explicitly required in the soil report). Furthermore we signed an amendment to our agreement that cleared them of any liability related to the soils in our area. I'm wondering if our builder violated any codes that may have resulted in the wet crawl space.