Simons, E. (2004). Dorchester Abbey Dorchester on Thames Oxfordshire Historic Buildings Analysis. Oxford: Oxford Archaeology. https://doi.org/10.5284/1100962. Cite this using datacite

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Title:		 Dorchester Abbey Dorchester on Thames Oxfordshire Historic Buildings Analysis
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Series:		 Oxford Archaeological Unit unpublished report series
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oxfordar1-508270_190424.pdf (21 MB) : Download
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DOI
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DOI
https://doi.org/10.5284/1100962
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Publication Type:		 Report (in Series)
Abstract
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Abstract:		 FIELDWORK METHODS AND RECORDINGThe Base SurveyThe base survey for the present programme of archaeological recording was previously commissioned by the church. This survey includes a detailed floor plan and external elevations. Internal elevations were not available and a survey was carried out by OA to provide suitable drawings. A previously commissioned rectified photographic survey of the exterior north wall was made available.The Drawn Record and SurveyPrior to the current restoration there has been only limited survey of the interior spaces of the abbey. Although the interior has been planned in some detail many elevations have been only recorded through sketches and photography. Naturally this made the exact placing of details (primarily of areas of wall painting exposed during restoration works) problematic. Areas of survey carried out by OA would also be left as divorced islands of detail with no survey to tie them to. It was felt that the completion of such a survey would allow archaeological recording to be placed within its context.A limited survey of the church was conducted as part of a recording programme being carried out by Oxford Archaeology during the most recent stage of renovation work. A range of paper and digital techniques had been used already to record parts of the abbey revealed during its renovation, and the purpose of the survey was to tie these together as a cohesive whole, as well as recording new data.The survey consisted of recording selective internal elevations of the abbey tied into an existing digital plan. A survey company (Sterling Surveys) had already surveyed a plan of the abbey at 1:100, so a good control network of survey stations had already been established.The survey had two main objectives. To record the position of wall painting uncovered during renovation of the interior of the abbey, and to tie in hand drawn material recorded during stripping and re-plastering of certain areas of the abbey to put them in their general context.Equipment UsedA Leica TCR 705 TST (Total Station Theodolite) with REDM (Reflectorless Electro-magnetic Distance Measurement) was used. Into this was connected a 486 50Mhz Fujitsu laptop with 16MB RAM running Penmap 2.3 software, to enable ‘real-time’ survey.Survey MethodologyThe basic method was to take square-on photos of each area of wall painting, using 35mm black and white and slide film, as well as a digital camera. Each photo taken had a minimum of four targets in the picture. The position of these targets was fixed using the TST, they could then be used to rectify the photos at a later stage onto the elevation.Once the position of the wall paintings had been established, an outline survey was conducted of each internal elevation where these occurred. Other internal elevations were then surveyed where previous hand-drawn recording had taken place. Once a basic outline of each required elevation had been recorded, salient points of detail were added. Key points were identified and surveyed in, and photographs taken of these areas, using a similar technique as that described above. These photos were later rectified using the key points as a reference. To supplement the photos taken brief measured sketches were also used of certain, more complex, details.Once the survey was complete the data was exported from Penmap as a DXF file and then opened in AutoCAD. The data was then split into individual two dimensional elevations. Additional detail was added from the rectified photos and sketch drawings. Onto these were rectified the photos of the wall painting. The photos were then trimmed so they just showed the areas of wall painting. Handdrawn, measured detail was added by scanning in the paper copies, georeferencing the scans in the CAD drawing and digitising them.
Author
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Author:		 Edmund Simons
Publisher
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Publisher:		 Oxford Archaeology
Year of Publication
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Year of Publication:		 2004
Locations
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Locations:
Parish: Dorchester
Country: England
District: South Oxfordshire
County: Oxfordshire
Grid Reference: 457899, 194299 (Easting, Northing)
Subjects / Periods
Subjects / Periods
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Subjects / Periods:
FLOOR (Monument Type England)
MEDIEVAL WALL PAINTING (Tag)
UNCERTAIN FLOOR (Tag)
UNCERTAIN (Historic England Periods)
POST MEDIEVAL (Historic England Periods)
MEDIEVAL (Historic England Periods)
STRUCTURAL TIMBER (Object England)
BUILDING SURVEY (Event)
POST MEDIEVAL STRUCTURAL TIMBER (Tag)
WALL PAINTING (Object England)
Identifiers
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Identifiers:
OASIS Id: oxfordar1-508270
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OASIS (OASIS)
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Created Date:		 22 Nov 2022