[ { "DataSN": "3248625", "ArticleType": "0", "FileName": "", "Link": "", "Source": "https://english.dorts.gov.taipei/News_Content.aspx?n=07AD51A0326C05A8&s=EB778A52E17E85DF", "title": "Flood Design Criteria", "Content": " 1. Flood Design Considerations Design criteria of flood prevention schemes vary in different cities in respect to their unique characteristics. For example, flood prevention measures were set up in Osaka, Japan to prevent flooding during high tides in Osaka Harbor; in Washington D.C., against overflow from the Potomac River and high tides in Chesapeake Bay; and in Zurich, Switzerland, against the overflow of lakes and rivers. Taipei MRT enhanced systemwide flood protection on its exclusive right-of-way and underground routes by protecting against the flooding caused by rainstorms and typhoons. After conducting a comprehensive evaluation – covering the functions and lifespan of MRT facilities, the risk to safety, engineering economics, etc. – Taipei MRT adopted an estimated flood level for a return period of 200 years plus an additional 50 cm. All entrances to stations, structural openings and depots were designed to prevent water intrusion to this level. 2. Flood Prevention Facilities The most economical and efficient way of meeting the above criteria is to elevate the level of entrances to prevent surface water from entering underground facilities. However, passengers will be inconvenienced if the level is too high. In places where entrances are of insufficient height to prevent flooding due to convenience concerns, the addition of floodgates or full-dimension waterproof gates may be necessary. Early flood prevention facilities for entrances on the Taipei MRT could be summarized as follows: (1) All entrances shall be a minimum of 15 cm above the flood level with a return period of 100 years and shall be a minimum of 60 to 120 cm above the adjacent ground level. (2) All entrances shall have floodgates that reach 50 cm above the flood level for a return period of 200 years. 3. Upgrading Flood Protection Criteria After flooding caused by Typhoon Nari in 2001, an overall review of flood prevention systems for the Taipei MRT was carried out and enhancement measures were adopted as follows: (1) The flood prevention standard of the lines built after the initial network—Xinzhuang line, Luzhou line, Tucheng line, Neihu line (part of the Wenshan-Neihu line), Nangang eastern extension, Banqiao line BL1&BL2, etc.—was set at a return period of 200 years plus an additional 110 cm, or above the level of flooding recorded during Typhoon Nari. (2) Watertight doors shall be considered for installation on sidewalks connecting to the Taipei MRT, in joint development buildings and at underground connections with other transportation facilities. (3) Gaps between vital electrical & mechanical facility rooms and conduits & pipes shall be filled with watertight materials. (4) Assessment of the installation of full-dimension floodgates guarding daylighting facilities, transfer stations with tunnel interfaces and on both sides where lines cross rivers or faults. These included two floodgates at Station O8, two on the crossover of the Xinzhuang and Luzhou lines, two at Station O6, two on the daylighting section of Luzhou Depot, one on the daylighting section of Tucheng Depot, two at Station G17, two at Station G22, two at Station BL17, and eight at Station O14/R10. (5) Existing flood prevention facilities shall be improved and floodgates heightened at stations on the initial network, in accordance with the flooding height recorded during Typhoon Nari.  Related Links:Tables listing level of flood prevention on Taipei MRT after Typhoon Nari-->", "Files": [ { "title": "Tables listing level of flood prevention on Taipei MRT after Typhoon Nari", "url": "https://www-ws.gov.taipei/001/Upload/public/Attachment/4121921483552.pdf" }, { "title": "[open in new window]Tables listing level of flood prevention on Taipei MRT after Typhoon Nari(pdffile)", "url": "https://www-ws.gov.taipei/001/Upload/389/relfile/19603/3248625/e60756e7-453e-4e64-8deb-2bad81df68e6.pdf" }, { "title": "Tables listing level of flood prevention on Taipei MRT after Typhoon Nari", "url": "https://www-ws.gov.taipei/001/Upload/public/Attachment/54711544085.pdf" } ], "Links": [], "Pictures": [], "Movies": [], "Publish Department": "Department of Rapid Transit Systems, Taipei City Government" }, { "DataSN": "3248626", "ArticleType": "0", "FileName": "", "Link": "", "Source": "https://english.dorts.gov.taipei/News_Content.aspx?n=07AD51A0326C05A8&s=579151D5E912834A", "title": "E&M Engineering", "Content": " E&M ServicesEvery MRT station is equipped with electrical systems and water services, fire detection and protection systems. Announcements to the public are made via the public address system.Design Details: 1. Electrical systems: low voltage power distribution, static uninterruptible power supply systems, grounding & lightning protection systems, lighting systems, receptacle & train arrival warning light systems, cable trays, bus ducts & wires, telephone wires and conduits.2. Mechanical systems: water supply, plumbing systems and equipment, hoists & cranes.3. Fire protection systems: low pollution fire extinguishing systems, fire protection water systems, hand-held extinguishers, fixed water spray systems, fire alarm and smoke detection systems.  Environmental Control System (ECS)ECS is one of the most important parts of Taipei MRT's E&M systems. The major functions of ECS are described as follows:1. During normal operation, ECS provides a comfortable environment for passengers and Taipei MRT employees.2. ECS maintains appropriate conditions in tunnels through the tunnel ventilation system. This is vital during times when trains may be stopped due to emergencies or other contingencies.3. In emergencies, the ECS emergency system can remove smoke and maintain smoke-free routes for passenger evacuation.4. ECS must meet environmental requirements of the general plant room and systemwide plant rooms so normal operation of the Taipei MRT system can be maintained. To meet the above-mentioned functions, ECS must take every design requirement into consideration during the detailed design stage. ECS detailed design includes the following subsystems:1. Air conditioning and Ventilation systems2. Smoke exhaust system3. Tunnel ventilation system4. Computer control and monitoring systems   EscalatorsIn the Taipei MRT system, heavy duty escalators can comfortably transport a large number of passengers and are capable of continuous operation for a period of not less than 20 hours a day, seven days a week. Elevators are also provided to serve disabled passengers.  ElevatorsAt the entrances, concourse and platform of a station, tactile floor tiles guide the disabled to elevators equipped with Braille plates and voice systems. There are also ramps connecting different floor levels.Structural, Electrical and Mechanical (SEM) and Combined Services Drawings (CSD)SEM: The function of SEM drawings is to show the requirements of the civil engineering/E&M engineering interfaces, such as structural openings, plinths, sleeves, embedded conduits and other embedded items.CSD: The function of CSD is to arrange facilities in equipment room areas to avoid conflicts between facilities. E&M FacilitiesE&M facilities of the Taipei MRT can be classified into nine major categories:1. Electric multiple units (EMU)2. Signaling systems3. Communication systems4. Power supply systems5. Elevator and escalator systems6. Automatic fare collection systems7. Environmental control systems8. Depot facilities9. Station and tunnel service facilitiesWith the exceptions of the Wenshan-Neihu (Wenhu) line, a medium-capacity and driverless automatic system, all other lines operate high-capacity trains fitted with steel wheels for running on steel tracks.The high-capacity system uses six-car trains. A driver is dispatched on each train to handle unforeseen incidents.The control center of the system plays an important role in supervising and regulating the operation of the trains and the E&M systems on the main lines of the network. Each train is capable of carrying up to 2,200 passengers and each line is designed with a one-way carrying capacity of at least 50,000 passengers per hour.The Wenhu line uses four-car trains fitted with rubber tires for running on the line's concrete and steel surfaces. Fully automated operation handled by the control center facilitates flexible scheduling. Each train is capable of carrying over 500 passengers.A successful conversion of the Matra VAL 256 trainsets, used on the former Muzha (today's Wenhu line) line, facilitated full compatibility with the Bombardier technology deployed on the Wenhu line and extended service from Taipei Zoo to Taipei Nangang Exhibition Center. ", "Files": [], "Links": [], "Pictures": [ { "title": "文湖EM.jpg", "url": "https://www-ws.gov.taipei/001/Upload/389/relpic/19603/3248626/c5aa57ba-f9f4-458c-9d8c-9d292611da0c.jpg" } ], "Movies": [], "Publish Department": "Department of Rapid Transit Systems, Taipei City Government" }, { "DataSN": "3248627", "ArticleType": "0", "FileName": "", "Link": "", "Source": "https://english.dorts.gov.taipei/News_Content.aspx?n=07AD51A0326C05A8&s=6A8D9AC1D80FFA87", "title": "Joint Development", "Content": " Soaring land prices and a more politically aware and active citizenry have made it increasingly difficult to acquire rights-of-way. Countless obstacles have to be overcome in the implementation of an MRT project. Nevertheless, with the support of the Taipei City Council and central government officials, we eventually acquired the necessary rights-of-way and landowners have gained their due returns. On the initial transit network, there are 46 Taipei MRT stations and depots where joint development program sites are located, with another 26 proposed locations on the long-term network. The Technology Building Station and Daan Station are two examples of just how efficiently land resources have been utilized and how well urban development is going on the Taipei MRT. Public opposition has diminished while business opportunities have been created for local communities.In the construction of joint development buildings together with transit facilities such as entrances and vent shafts, the build-operate-transfer (BOT) strategy has been approved for efficiency on the long-term network. ", "Files": [], "Links": [], "Pictures": [ { "title": "Br501.jpg", "url": "https://www-ws.gov.taipei/001/Upload/389/relpic/19603/3248627/fb47eecf-c370-475f-829c-07ac4d042cab.jpg" }, { "title": "Br201.jpg", "url": "https://www-ws.gov.taipei/001/Upload/389/relpic/19603/3248627/b88693be-3d65-41b1-84fc-480764447d5f.jpg" }, { "title": "Br601.jpg", "url": "https://www-ws.gov.taipei/001/Upload/389/relpic/19603/3248627/4e3ab641-f4ac-41fd-9a2e-62551bf8d473.jpg" } ], "Movies": [], "Publish Department": "Department of Rapid Transit Systems, Taipei City Government" } ]