Appendix D: Survey of the Southeast Corner

In the summer of 1996, members of the PFP performed a detailed survey of the southeast corner of the Macellum, encompassing Areas D and E, using laser theodolite equipment. Details of the surveying methods are described by Hanna [1996].

Such a survey provides much more accurate measurements than the quick photogrammetry methods used by the study, and the survey results were use to determine that the wall thickness at Areas D and E is 0.5 meters.

Figures D.1 and D.2 below show renderings of a computer model generated from the survey data. The data reveals that the grade difference between inside and outside at the southeast corner of the building is approximately 2.2 meters.

Figure D.1: Survey model of the southeast corner, viewed from the south. the colors correspond to different types of masonry composition.

Figure D.2: Survey model of the southeast corner, viewed from the northwest.