In order to standardize the setting and management of safety protection facilities on construction sites and improve the level of safety protection on construction sites, the project department pursues an organic unity of internal quality and external taste, with the goal of "high-quality durability, safety and comfort, economic and environmental protection, and recognition by units at all levels" as the construction safety management goal. The project department has determined the location, installation form, maintenance and replacement of safety protection facilities in key parts of the project, The aim is to improve the convenience, recyclability, and economic practicality of the installation, use, maintenance, and dismantling of safety protection facilities on construction sites. Various safety protection standards are proposed and issued for reference and guidance of the construction personnel of Qinyi Fifth Standard, promoting the development of safety protection facilities on construction sites towards standardization, modularization, assembly, and industrialization.

基坑周圍宜使用鋼管+裝配式護欄進行防護，鋼管防護欄桿高度不得小于1.2m，由上下2道橫桿組成，欄桿柱間距不得大于2m，鋼鋼應使用扣件進行連接，當鋼管護欄施作完成后在外側安裝裝配式護欄片，懸掛“基坑危險請勿靠近”、“禁止跨越”、“禁止倚靠”等警示標識，同時應在護欄四周設置夜間警示燈。（需注意：臨邊防護欄桿距離基坑邊緣距離不得小于0.5m）

Steel pipes and prefabricated guardrails should be used for protection around the foundation pit. The height of the steel pipe guardrail should not be less than 1.2m, consisting of two horizontal bars above and below. The spacing between railing columns should not be greater than 2m. Steel bars should be connected using fasteners. After the construction of the steel pipe guardrail is completed, prefabricated guardrails should be installed on the outside, and warning signs such as "Do not approach the danger of the foundation pit", "No crossing", and "No leaning" should be hung, At the same time, night warning lights should be installed around the guardrail. (Please note that the distance between the edge protective railing and the edge of the foundation pit should not be less than 0.5m.)

基坑臨邊防護欄在城市中的應用十分普遍，適用范圍：基坑臨邊防護欄適用于基坑周邊區域的圍護及施工區域的隔離分隔。建筑施工工地的基坑臨邊護欄常見的顏色有黃黑相間、紅白相間兩種，形狀既有方管的也有鐵絲護欄?；优R邊護欄在建筑施工現場主要起防止人身傷害的必要防護設施，它適用于各類施工現場。采用熱浸鍍鋅材料，嚴格按照圖紙制作，尺寸正確，焊點牢固，達到防護的目的?；优R邊護欄可以讓施工現場整潔美觀，文明，可以防止來往的車輛太靠近基坑邊緣造成塌方而引發事故，還可以防止施工工人掉進基坑內，防止雜物落入基坑內，從而對基坑內的施工工人造成人身傷害。

The application of foundation pit edge protection fence is very common in cities, and its scope of application: The foundation pit edge protection fence is suitable for the enclosure of the surrounding area of the foundation pit and the isolation and separation of the construction area. The common colors for the edge guardrails of foundation pits on construction sites are yellow black and red white, with shapes ranging from square tubes to wire guardrails. The edge guardrail of the foundation pit mainly serves as a necessary protective device to prevent personal injury on construction sites, and is suitable for various construction sites. Made of hot-dip galvanized material, strictly according to the drawings, with correct dimensions and firm welding points, achieving the purpose of safety protection. The edge guardrail of the foundation pit can make the construction site clean and beautiful, civilized and safe, prevent vehicles from coming too close to the edge of the foundation pit and causing safety accidents due to collapse, and also prevent construction workers from falling into the foundation pit, preventing debris from falling into the foundation pit and causing personal injury to construction workers inside the foundation pit.