The safety of the construction site is what we must do, so how can we really play a protective role? The construction of the adjacent guardrail is a very key operation, so the construction of the adjacent guardrail to meet what conditions?

　　防护栏杆应由上下横杆和栏杆柱组成。上杆离地高度为1.0~1.2m，下杆离地高度为0.5~0.6m。坡度大于1：2.2的水平，护栏应高1.5m，并加设网。除设计计算外，当横杆长度大于2m时，必须加设栏杆柱。

　　The protective railing shall be composed of upper and lower rail and railing column. The upper rod is 1.0-1.2 m above the ground, and the lower rod is 0.5-0.6 m above the ground. If the slope is greater than 1:2.2, the guardrail should be 1.5m high and a safety net should be added. In addition to the design calculation, when the length of the crossbar is greater than 2m, the railing column must be added.

　　栏杆的固定应符合以下要求：

　　The railings shall be fixed according to the following requirements:

　　基坑周围固定时，可用钢管打入地下50~70cm深。钢管与边缘的距离不应小于50cm。在基坑周围使用钢板桩时，可以在钢板桩的外侧打入钢管。

　　When the foundation pit is fixed around, the steel pipe can be used to drive into the underground 50~70cm deep. The distance between steel pipe and edge should not be less than 50cm. When steel sheet piles are used around foundation pits, steel pipes can be driven into the outer side of the steel sheet piles.

　　固定在混凝土地板、屋顶或墙壁上时，预埋件可用钢管或钢筋焊接牢固。使用竹木栏杆时，可在预埋件上焊接30cm长∟50×5角钢，并在上下两侧钻孔，然后用10mm螺栓将竹木件固定。

　　When fixed on concrete floor, roof or wall, the embedded parts can be welded firmly with steel pipe or steel bar. When using bamboo railings, weld 30cm ∟50×5 Angle steel on the embedded parts, drill holes on the upper and lower sides, and secure the bamboo and wood parts with 10mm bolts.

　　在砖块或砌块等砌体上固定时，可预先搭好规格合适的80×6弯曲扁钢作为预埋铁的混凝土砌块，然后按上述方法固定。

　　When fixed on masonry such as bricks or blocks, 80×6 bending flat steel of suitable specifications can be pre-built as concrete blocks with embedded iron and then fixed in accordance with the above method.

　　栏杆立柱的固定及其与水平面的连接，整体结构应使护栏在上杆上的任意位置，能够承受任何方向1000N的外力。当栏杆位置容易发生拥挤、车辆撞击或物体碰撞等情况时，应增加栏杆截面或加密柱间距。

　　The railing column is fixed and connected with the horizontal plane. The overall structure should make the guardrail at any position on the upper pole and be able to withstand the external force of 1000N in any direction. When the position of the railing is prone to congestion, vehicle collision or object collision, the section of the railing or the spacing of the column should be increased.

　　临边护栏必须自上而下用竖网封闭，或在栏杆下设置高度不小于18cm的紧密固定的护脚板或高度40cm的护脚板。如果护趾板和护栏有孔洞，则不应大于25mm。板与围栏底部之间的间隙不应大于10mm。接收台两侧的栏杆必须自上而下用竖网或竹栅栏悬挂。

　　Protective railings must be closed with vertical nets from top to bottom, or a tightly fixed foot guard with a height of no less than 18cm or a foot guard with a height of 40cm shall be installed under the railings. If the toe guard and guardrail have holes, they should not be larger than 25mm. The gap between the plate and the bottom of the fence should not be greater than 10mm. The railing on either side of the receiving station must be hung from top to bottom with vertical nets or bamboo fences.

　　当边缘外侧面向街道时，除防护栏杆外，开敞立面必须采用挂保险网或其他可靠措施将其全封闭。

　　When the outer edge faces the street, in addition to protective railings, the open facade must be fully enclosed by hanging safety nets or other reliable measures.

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