The purpose of this study was to determine if there was a significant difference between a six week experimental core stability plank exercise program compared to a traditional supine exercise program in the closure of DRA, and to determine the relationship between DRA measurements, pain, ODI, and PFDI scores.
To meet regulations the average single depth grave is about 3-4 feet deep. Already we see that two out of the three grave depths are deeper than 6 feet (or 1.8 meters). Tripple depth is significantly deeper and double depth is noticeably deeper, being almost 7 feet.
(Section 103 Burial Act 1847 chapter 34) That's less than 3 feet, however, its probably best to dig a 4 foot hole, since this will allow about 3 feet between the upper surface of the body, assuming that you will not be using a coffin, and the ground surface. 6 feet under is a colloquialism.