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.

基坑周围宜使用钢管+装配式护栏进行防护，钢管防护栏杆高度不得小于1.2m，由上下2道横杆组成，栏杆柱间距不得大于2m，钢钢应使用扣件进行连接，当钢管护栏施作完成后在外侧安装装配式护栏片，悬挂“基坑危险请勿靠近”、“禁止跨越”、“禁止倚靠”等警示标识，同时应在护栏四周设置夜间警示灯。（需注意：临边防护栏杆距离基坑边缘距离不得小于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.)

基坑临边防护栏在城市中的应用十分普遍，适用范围：基坑临边防护栏适用于基坑周边区域的围护及施工区域的隔离分隔。建筑施工工地的基坑临边护栏常见的颜色有黄黑相间、红白相间两种，形状既有方管的也有铁丝护栏。基坑临边护栏在建筑施工现场主要起防止人身伤害的必要防护设施，它适用于各类施工现场。采用热浸镀锌材料，严格按照图纸制作，尺寸正确，焊点牢固，达到防护的目的。基坑临边护栏可以让施工现场整洁美观，文明，可以防止来往的车辆太靠近基坑边缘造成塌方而引发事故，还可以防止施工工人掉进基坑内，防止杂物落入基坑内，从而对基坑内的施工工人造成人身伤害。

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.