NRS-21554 | Aperture cards - plans relating to public works projects

These are aperture card copies of microfilmed plans (in NRS 15044) relating to projects proposed or conducted by the various branches of Public Works. The plans include sketches, working drawings and executed plans categorised as architectural, engineering, mechanical, electrical, structural, hydraulic and survey. Subjects include government buildings, facilities and precincts such as water supply and sewerage works, including reservoirs, dams and weirs, pipelines, pumping stations and treatment stations; wharves, jetties, boat ramps and navigational equipment; soundings, dredges and dredging; flood mitigation and drainage works; psychiatric hospitals; schools and universities; police stations, court houses and gaols; and site and locality plans. The plans were created at Head Office and in regional offices and date from the early 1800s.In 1964, in preparation for an office relocation and anticipating less space for the storage of plans, Public Works' internal Reprographics Unit began creating microfilm copies of its hardcopy plans. These plans came from at least three “plan rooms” belonging to different units within the department. Most of the original plans were destroyed after filming but some were transferred to State Archives. The Reprographics Unit also sent a master microfilm reel to State Archives and, at the same time, created an aperture card copy for the department's reference.In 1967, when the relocation took place, the different “plan rooms” merged into Plan Services. As projects were completed, hardcopy plans were sent to the Reprographics Unit and microfilm reels and aperture cards were created. The aperture cards were sent to Plan Services and the master reels to State Archives. Regional offices and external parties doing work for Public Works would send in aperture cards they created to Plan Services.In 1992, the Reprographics Unit was dissolved and a tender to microfilm the hardcopy plans was let to an external bureau. This contractor provided master reels and sets of aperture cards to Plan Services. Subsequently, the master reels were sent to State Archives.In 2009, the format for the reproduction of hardcopy plans was changed from microform to PDF. The PDF files were stored in the agency’s records management system and no “masters” were sent to State Archives.No contemporary index to all of these aperture cards appears to have been created. These aperture cards are at least partly in order by plan room due to the copying process followed. A keyword search of item lists is the only practical way to locate a specific plan.Please note that the item lists for this series contain many discrepancies, including typographical errors and dating inaccuracies. Users are encouraged to report such issues so that they may be corrected.

本数据集为馆藏编号NRS 15044的缩微工程图纸的孔径卡片（aperture card）副本，相关项目由公共工程部（Public Works）各分支机构提议或实施。该类图纸涵盖草图、施工详图及竣工图纸，分类涵盖建筑、土木、机械、电气、结构、水利及测量等类别。图纸主题涵盖政府楼宇、设施及片区，例如供水与污水处理工程（含水库、水坝、堰、管线、泵站及处理厂）、码头、栈桥、船坡道及导航设备、水深测量、挖泥船与疏浚作业、防洪与排水工程、精神病院、中小学与高等院校、警局、法院及监狱，以及场地与区域规划图。本批图纸由总部及区域办事处编制，可追溯至19世纪早期。
1964年，为配合办公室搬迁并应对图纸存储空间缩减的预期，公共工程部内部图文复制组（Reprographics Unit）开始对其纸质图纸制作缩微胶片副本。这批图纸源自该部门内三个不同单位的“图纸室”。大部分原始图纸在完成缩微拍摄后被销毁，但部分图纸被移交至州档案馆（State Archives）。图文复制组还将一套主缩微胶片卷送至州档案馆，同时为部门留存了孔径卡片副本以供内部参考。
1967年办公室搬迁完成后，各“图纸室”合并为图纸服务部（Plan Services）。项目竣工后，纸质图纸会被送至图文复制组，用于制作缩微胶片卷与孔径卡片副本。孔径卡片移交至图纸服务部，主缩微胶片卷则送至州档案馆。为公共工程部提供服务的区域办事处及外部合作方所制作的孔径卡片，也需提交至图纸服务部。
1992年，图文复制组撤销，部门将纸质图纸的缩微拍摄项目外包给外部机构。该承包商向图纸服务部提供了主缩微胶片卷与多套孔径卡片。此后，主缩微胶片卷被移交至州档案馆。
2009年，纸质图纸的复刻格式从缩微胶片改为PDF格式。PDF文件存储于机构的档案管理系统中，未向州档案馆移交主文件。
目前尚未编制针对这批孔径卡片的统一现行索引。由于缩微拍摄流程的限制，这批孔径卡片至少在一定程度上按照原图纸室进行了分类排序。通过项目清单进行关键词检索，是查找特定图纸的唯一实用方法。
请注意，本系列的项目清单存在多处不一致之处，包括排版错误与日期标注不准确。我们鼓励用户反馈此类问题，以便进行修正。