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Survey Drafting - Chapter 11 - Requirements for CAD Survey Drawing Presentation","","Chapter 11 specifies requirements for the final presentation of a survey CAD drawing. It addresses drafting of topographical plans, including A0 versus continuous models, required 2D/3D formats, and mandatory layer structures for DTM points, TIN/triangles, and spot-shot feature codes. It further defines general CAD conventions, lettering orientation, allowed symbols, north direction marking, schedule blocks for permanent survey control coordinates and datum notes, and client-determined plan numbering. Additional guidance covers materials and sheet layout key plans.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":40,"@type":76,"position":81},"https://docshare.wps.com/document/research-report/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/11-survey-drafting-chapter-11-requirements-for-cad-survey-drawing-presentation/649438/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/11-survey-drafting-chapter-11-requirements-for-cad-survey-drawing-presentation/649438.png","ImageObject",300,407,{"name":92,"@type":93},"Adam","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-02","2026-10-23",true,{"@type":102,"interactionType":103,"userInteractionCount":24},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What is required for continuous model submissions for a survey?","Question",{"text":112,"@type":113},"Continuous Models must be delivered in both 2D and 3D formats, with DTM points feature codes, heights, and DTM triangles (TIN) included within the drawing’s layer structure. The model must be a single CAD drawing covering the entire surveyed area as one digital sheet.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How should spot-shot observations and feature codes be organized in the CAD model?",{"text":117,"@type":113},"All observed spot shots and feature codes must be incorporated into the Continuous Model using three separate layers: code, height, and position. The decimal point of the spot shot must always indicate the exact surveyed position.",{"name":119,"@type":110,"acceptedAnswer":120},"What must appear in the schedule block for coordinates on the drawing?",{"text":121,"@type":113},"A schedule block for the co-ordinate list must be shown on the left side of the main title block. It must list the co-ordinates of all Permanent Survey Control shown on the sheet, and include all relevant datum information in the schedule block in the specified position.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},649438,1792799959,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":39,"category_name":40,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":24,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":129,"read_time":144},1374404737137,"https://ap-avatar.wpscdn.com/davatar_155a257f0dc6eb9ab79c44ca47cae57d","11. SURVEY DRAFTING  \nThis chapter will cover all the requirements with regards to the final presentation of a survey CAD drawing.  \nThese specifications and dimensions refer generally to CAD drawings at a scale of 1:1000 . Where other scales are used these must be ‘natural’ scales and all symbols must be changed in relation to the scale used.  \n11.1 Drafting of topographical plans  \n11.1.1 Drawing requirements  \na) The standard sheet size shall be A0 except if otherwise specified.  \nb) Where the extent of the surveyed area covers an area greater than a single A0 sheet then the final CAD work submitted shall comprise of a ‘Continuous Model ’ drawing and A0 drawing sheets or as otherwise specified by the Client.  \nc) Continuous Model drawing  \ni) Continuous Models shall be submitted in 2D and 3D formats. The DTM points feature codes heights and DTM triangles (TIN) must be included in the layer structure of such drawings.  \nii) A Continuous Model must comprise a single ‘CAD drawing’ covering the entire surveyed area i.e. a single digital sheet.  \niii) This digital drawing must conform to all the drafting requirements for A0 hard copy sheets and as further specified below.  \niv) It is noted that the design engineers generally use this Continuous Model for their design work. Hard copy A0 design sheets are then extracted from this Continuous Model as suited to their requirements.  \nv) A title block and co-ordinate lists are not required for this type of ‘digital drawing’.  \nd) A0 drawing sheets  \ni) A0 drawings must be supplied in 2D format.  \nii) No (TIN) triangles are required as a layer on the A0 sheets.  \niii) The Continuous Model as specified above must be used to extract the individual A0 survey sheets and in accordance with the approved sheet layout.  \niv) Provided that the Continuous Model was compiled in accordance with the drafting specifications then there should be minimal CAD work required to ensure that each A0 sheet is fully compliant with the drawing specifications.  \nv) A0 hard copy drawings shall only be submitted on completion when instructed to do so.  \n11.1.2 General requirements for all CAD work  \na) Survey drawings must obviously conform to the southern hemisphere conventions i.e. reflecting the correct sign (negative or positive) with respect to the actual grid values.  \nb) All observed ‘spot shot’ and feature codes must be incorporated into the Continuous Model in three separate layers i.e. code, height and position. The decimal point of the‘spot shot’ must always represent the exact position where the ‘spot shot’ was surveyed.  \nc) The DTM ‘triangles’ for topographical ground surveys must form part of the Continuous Model and be incorporated as a separate layer and named ‘DTM triangles’. TIN files for photogrammetric, Lidar and laser scanning surveys can be submitted in a separate folder and not as a folder for the CAD work.  \nd) Features determined by their grouped nature must be incorporated as separate CAD layers and as specified in Annexure 20. The layer structures must be recorded by layer name and not layer number. Careful checks are to be carried out to ensure features of the same or similar nature are not incorporated in different layers.  \ne) Lettering must be undertaken so that it reads as viewed from the bottom or the bottom right hand corner of a sheet.  \nf) Unless otherwise specified, only drafting symbols as per Annexures 19 and 21 maybe used.  \ng) An Overlap between adjacent A0 sheets is not required.  \nh) The North Direction sign must be reflected on each sheet so that it is in a prominent and easily visible position.  \ni) A ‘schedule block’ for the co-ordinate list must be shown on the left hand side of the main title block. The co-ordinates of all Permanent Survey Control which appear on the sheet only must be listed.  \nj) All datum information as it applies to the coordinates listed must be noted in the‘schedule block’ of co-ordinates in the position shown.  \nk) Plan numbers shall be obt","cbCaiujgHxsR9ikI","https://ap.wps.com/l/cbCaiujgHxsR9ikI","pdf",144780,11,"English","# 11. Survey Drafting\n## 11.1 Drafting of topographical plans\n### 11.1.1 Drawing requirements\n## 11.1.2 General requirements for all CAD work\n## 11.2 Drafting\n### 11.2.1 The Material\n### 11.2.2 Sheet size\n### 11.2.3 Sheet layout and the sheet layout key plan","[{\"question\":\"What is required for continuous model submissions for a survey?\",\"answer\":\"Continuous Models must be delivered in both 2D and 3D formats, with DTM points feature codes, heights, and DTM triangles (TIN) included within the drawing’s layer structure. The model must be a single CAD drawing covering the entire surveyed area as one digital sheet.\"},{\"question\":\"How should spot-shot observations and feature codes be organized in the CAD model?\",\"answer\":\"All observed spot shots and feature codes must be incorporated into the Continuous Model using three separate layers: code, height, and position. The decimal point of the spot shot must always indicate the exact surveyed position.\"},{\"question\":\"What must appear in the schedule block for coordinates on the drawing?\",\"answer\":\"A schedule block for the co-ordinate list must be shown on the left side of the main title block. It must list the co-ordinates of all Permanent Survey Control shown on the sheet, and include all relevant datum information in the schedule block in the specified position.\"}]","11. Survey Drafting - Chapter 11 - Requirements for CAD Survey Drawing Presentation | PDF",28]