Editing Earth shelter (section)

===Bermed===
In the [[Berm|earth bermed]] (also termed "bunded")<ref name="harral2012" /> type, earth is banked against the exterior walls,<ref name="lowimpact" /> sloping down away from the building. The berm can be partial or total.<ref name="harral2012" /> The polar facing wall may be bermed,<ref name="lowimpact" /> leaving the equator-facing wall un-bermed (in temperate regions). Usually this type of earth shelter is built on, or only slightly below the original [[Grade (slope)|grade]].{{citation needed|date=January 2019}} Due to the building being above the original ground level, fewer moisture problems are associated with earth berming in comparison to underground/fully-recessed construction,{{citation needed|date=January 2019}} and it costs less to construct.<ref name="roy2006" /> According to one report, earth berming provided 90-95% of the energy advantage as a completely below grade structure.<ref name="roy2006" />