ID 原文 译文
4496 2 The buried spacing and depth of grounding body shall be inspected; 2 应检验接地体的埋设间距、深度；
4497 2 The cabinet installation sequence shall be with light one above and heavy one below, the equipment such as wireless microphone receiver shall be installed at upper part of cabinet; the heavy equipment such as power amplifier shall be installed at the lower part of cabinet and also shall be supported by guide rail; 2 机柜安装顺序应上轻下重，无线传声器接收机等设备应安装于机柜上部；功率放大器等较重设备应安装于机柜下部，并应由导轨支撑；
4498 2 The cabinet of the switchboard shall be installed according to the engineering design plan, and the vertical misalignment at the upper and lower ends shall not be greater than 3mm; 2 应按工程设计平面图安装交换机机柜，上下两端垂直偏差不应大于3mm；
4499 2 The cabinets (racks) of the same type shall be at the same height, the front surface of the cabinets (racks) in the same row shall form a flat surface and the row-to-row distance shall meet the design requirements. 2 同类机柜（架）应高低一致，同排机柜（架）正面应处于同一平面，排间距离应符合设计要求。
4500 2 The cable shaft, pipe/duct shaft, smoke flues, exhaust duct and other shafts shall be set up separately, and the shaft wall shall adopt the non-combustible elements having a FRL not less than 1.00h. 2 电缆井、管道井、排烟道、排气道等竖井应分别独立设置，其井壁应采用耐火极限不低于1.00h的不燃性构件。
4501 2 The cables in the cable tray shall be laid tidily, smoothly and straight and shall be free from crossing and exposure from the cable tray. 2 线槽内的线缆应布放整齐、顺直，并无交叉、溢出槽外现象。
4502 2 The calculating ratio shall be obtained by using the total interior utilization area of the building divided by the building area of the residential building; 2 应以全楼总套内使用面积除以住宅楼建筑面积得出计算比值；
4503 2 The carbonization coefficient shall not be less than 0.85; 2 碳化系数不应小于0.85；
4504 2 The cases and boxes shall be installed upright, and the equipment and components inside the cases and boxes shall be arranged tidily and fixed firmly. 2 箱盒应安装端正，箱盒内的设备、器件应排列整齐、固定牢固。
4505 2 The ceiling of the first underground storey shall adopt ribbed slab system; its slab thickness shall not be less than 180mm; its concrete strength grade should not be less than C30, double-layer two-way reinforcement shall be adopted and the ratio of reinforcement at each layer in every direction should not be less than 0.25%. 2 地下一层结构顶板应采用梁板式楼盖，板厚不应小于180mm，其混凝土强度等级不宜小于C30；楼面应采用双层双向配筋，且每层每个方向的配筋率不宜小于0.25%。