Archaeological plan

In an archaeological excavation, an archaeological plan is a drawn record of features (and artifacts) in the horizontal plane. It can either take the form of a "multi context" plan, which is drawn with many contexts on it to show relationships between these features as part of some phase or alternatively a single context plan with a single feature is drawn . Excavated features are drawn in three dimensions with the help of drawing conventions such as hachures. Single context planning developed by the Museum of London has become the professional norm. The basic advantage of single context planning is context plans draw on transparent perma-trace paper can be overlaid for re-interpretation at a later date. Multi-context Plans as opposed to single context plans can be made of complete sites, trenches or individual features. In the United Kingdom, the scale of the plans is usually 1:20. They are linked to the site recording system by the inclusion of known grid points and height readings, taken with a dumpy level or a total station (see surveying). Excavation of a site by the removal of human made deposits in the reverse order they were created is the preferred method of excavation and is referred to as stratigraphic area excavation "in plan" as opposed to excavation "in section". Plan and section drawings [1] have an interpretive function as well as being part of the recording system, because the draughts-person makes conscious decisions about what should be included or emphasised.
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