Standard for Installation of Fire Safety Devices based on Use and Occupancy Article 221
The water source configured as prescribed in preceding article shall also be connected to any of the following types of pressurization and driving device:1. Gravity tank shall comply with the following subparagraphs:(1) Nilometer, drainpipe, overflow drainpipe, feed water pipe and manhole shall be equipped on the gravity tank.(2) The necessary height drop in gravity tank shall be more than the value calculated by the method provided below:Necessary height drop = water head lost by friction with fire hose of foam based hydrant ＋water head lost by friction with pipe＋discharging pressure of foam outlet, foam nozzle or foam monitor and convert the value into water head (unit: m)H=h1+h2+h3m2. Pressure tank shall comply with the following subparagraphs:(1) Pressure gauge, nilometer, drainpipe, feed water pipe, gas filling pipe, air compressor, and manhole shall all be equipped.(2) The air in a water tank shall be more than 1/3 of the total volume of the tank and the pressure more than the necessary pressure of using hydrant installed in the highest point of the building to maintain the required discharging water pressure. The pressure tank shall be able to perform automatic pressurization when the pressure and the liquid level inside the tank lower down. Air compressor and pressurizing pump shall be connected to emergency power source.(3) The required pressure shall be more than the value calculated using theformula provided below:Required pressure = pressure lost by friction of fire hose + pressure lost by friction of pipe + height drop+ discharging pressure of foam outlet, foam nozzle or foam monitor (Unit: kg/cm2, MPa)P = P1 + P2 + P3+P43. Fire pump shall comply with the following subparagraphs:(1) The pump total head (discharge/suction pressure) shall be more than thevalue calculated using the method provided below:The pump total head(discharge/suction pressure)= water head lost by friction of fire hose + water head by friction of pipe + height drop+ water head of foam outlet, foam nozzle or foam monitor; converted into water head (Unit: m)H = h1 + h2 + h3 + h4(2) To determine the required water pressure of foam nozzle that is connected to foam fire-suppression equipments shall apply mutais mutandis to the case as referred to in Article 77.(3) Used dedicatedly. However under the circumstances of not interrupting with the main function, use of fire-suppression equipment could be used with other fire-suppression equipments is not restricted.(4) Connected to emergency power source.The provisions of Article 38 shall apply mutatis mutandis to emergency power source under paragraph 3(4), and, additionally, the electricity capacity thereof shall be more than 1.5 times of the necessary discharging time
中文原文 各類場所消防安全設備設置標準第221條
依前條設置之水源，應連結加壓送水裝置，並依下列各款擇一設置：
一、重力水箱，應符合下列規定：
（一）有水位計、排水管、溢水用排水管、補給水管及人孔之裝置。
（二）水箱必要落差在下列計算值以上：必要落差＝移動式泡沫滅火設備消防水帶摩擦損失水頭＋配管摩擦損失水頭＋泡沫放出口、泡沫瞄子或泡沫射水槍之放射壓力，並換算成水頭（計算單位：公尺）H=h1+h2+h3m二、壓力水箱，應符合下列規定：
（一）有壓力表、水位計、排水管、補給水管、給氣管、空氣壓縮機及人孔之裝置。
（二）水箱內空氣占水箱容積三分之一以上，壓力在使用建築物最高處之消防栓維持規定放水水壓所需壓力以上。
當水箱內壓力及液面減低時，能自動補充加壓。
空氣壓縮機及加壓幫浦，與緊急電源相連接。
（三）必要壓力在下列計算值以上：必要壓力＝消防水帶摩擦損失壓力＋配管摩擦損失壓力＋落差＋泡沫放出口、泡沫瞄子或泡沫射水槍之放射壓力（計算單位：公斤／平方公分，MPa）P=P1+P2+P3+P4三、消防幫浦，應符合下列規定：
（一）幫浦全揚程在下列計算值以上：幫浦全揚程＝消防水帶摩擦損失水頭＋配管摩擦損失水頭＋落差＋泡沫放出口、泡沫瞄子或射水槍之放射壓力，並換算成水頭（計算單位：公尺）H=h1+h2+h3+h4（二）連結之泡沫滅火設備採泡沫噴頭方式者，其出水量及出水壓力，準用第七十七條之規定。
（三）應為專用。
但與其他滅火設備並用，無妨礙各設備之性能時，不在此限。
（四）連接緊急電源。
前項緊急電源除準用第三十八條規定外，其供電容量應在所需放射時間之一點五倍以上。
一、重力水箱，應符合下列規定：
（一）有水位計、排水管、溢水用排水管、補給水管及人孔之裝置。
（二）水箱必要落差在下列計算值以上：必要落差＝移動式泡沫滅火設備消防水帶摩擦損失水頭＋配管摩擦損失水頭＋泡沫放出口、泡沫瞄子或泡沫射水槍之放射壓力，並換算成水頭（計算單位：公尺）H=h1+h2+h3m二、壓力水箱，應符合下列規定：
（一）有壓力表、水位計、排水管、補給水管、給氣管、空氣壓縮機及人孔之裝置。
（二）水箱內空氣占水箱容積三分之一以上，壓力在使用建築物最高處之消防栓維持規定放水水壓所需壓力以上。
當水箱內壓力及液面減低時，能自動補充加壓。
空氣壓縮機及加壓幫浦，與緊急電源相連接。
（三）必要壓力在下列計算值以上：必要壓力＝消防水帶摩擦損失壓力＋配管摩擦損失壓力＋落差＋泡沫放出口、泡沫瞄子或泡沫射水槍之放射壓力（計算單位：公斤／平方公分，MPa）P=P1+P2+P3+P4三、消防幫浦，應符合下列規定：
（一）幫浦全揚程在下列計算值以上：幫浦全揚程＝消防水帶摩擦損失水頭＋配管摩擦損失水頭＋落差＋泡沫放出口、泡沫瞄子或射水槍之放射壓力，並換算成水頭（計算單位：公尺）H=h1+h2+h3+h4（二）連結之泡沫滅火設備採泡沫噴頭方式者，其出水量及出水壓力，準用第七十七條之規定。
（三）應為專用。
但與其他滅火設備並用，無妨礙各設備之性能時，不在此限。
（四）連接緊急電源。
前項緊急電源除準用第三十八條規定外，其供電容量應在所需放射時間之一點五倍以上。