Height and facilities of edge protection fence:

1、基坑护栏临边防护采用20×30mm方方矩管制作，护栏立柱采用50×50mm（或40*40mm）方矩管，底座使用膨胀螺栓与地面固定牢靠。

1. The edge protection of the foundation pit guardrail adopts 20 × 30mm square rectangular tube production, guardrail column made of 50 × 50mm (or 40 * 40mm) square tube, with the base firmly fixed to the ground using expansion bolts.

2、基坑临边防护栏立柱高度应不小于1200mm，栏杆高度不小于1200mm，标准长度2000mm每套（一根立柱和一片护栏为一套）或从立柱中道中的距离为2000mm，表面喷有红白或者黑黄警示漆料并在中间位置设置警示标语牌，底部设200mm（180mm）高红白或黑黄相间的挡脚板。

2. The height of the pillar of the edge protection fence in the foundation pit should not be less than 1200mm, and the height of the railing should not be less than 1200mm. The standard length is 2000mm per set (one pillar and one guardrail are a set) or the distance from the middle of the pillar is 2000mm. The surface is sprayed with red, white, or black yellow warning paint, and a safety warning sign is set in the middle. A 200mm (180mm) high red, white, or black yellow foot board is set at the bottom.

3、基坑排水措施要做好，在基坑防护栏杆外侧设置排水沟，采取有效的把水排走，不能在基坑周围有积水防止因积水侵泡而引起基坑边塌方。基坑护栏周边设置夜间警示灯，或在基坑护栏挂有夜间放光装置。

3. The drainage measures for the foundation pit should be taken well. A drainage ditch should be set up outside the protective railing of the foundation pit, and effective measures should be taken to drain the water. There should be no accumulated water around the foundation pit to prevent the collapse of the foundation pit edge caused by water intrusion. Set up night warning lights around the foundation pit guardrail, or hang night lighting devices on the foundation pit guardrail.

4、基坑临边护栏外侧还可以悬挂13号提示牌，内侧悬挂14号提示牌。

4. The outer side of the foundation pit edge guardrail can also hang the No. 13 warning sign, and the inner side can hang the No. 14 warning sign.

临边防护栏的规范与要求：

Specifications and requirements for edge protection fences:

(1)、防护栏杆应由上下两道横杆及栏杆柱组成，上杆离地高度为1.0~1.2m，下杆离地高度0.5~0.6m。横杆长度>2m时，必须加设栏杆柱。

(1) The protective railing should be composed of two horizontal bars and railing columns, with the upper bar being 1.0~1.2m above the ground and the lower bar being 0.5~0.6m above the ground. When the length of the crossbar is>2m, additional railing columns must be installed.

(2)、栏杆柱固定及其与横杆连接，其整体构造应使防护栏杆在上杆任何处,能经受任何方向的1000N的外力。

(2) The fixation of railing columns and their connection to the crossbar should be such that the protective railing can withstand an external force of 1000N in any direction at any position on the upper pole.

(3)、防护栏杆必须设置自上而下的密目网封闭，或在栏杆下边设置严密固定的高度不低于180mm的挡脚板

(3) Protective railings must be enclosed with a dense mesh safety net from top to bottom, or a tightly fixed toe board with a height of no less than 180mm must be installed below the railing