Warning signs for going up and down stairs during construction.

When climbing a ladder, you must check whether the ladder is firm step by step. When going up and down the ladder, you must hold it firmly. It is not allowed to hold a ladder with both hands.

Specification requirements for ladder climbing

1. The support of the safety ladder shall be erected by using vertical rods (each section 1.5m), 1.3m transverse rods, 2.5m longitudinal rods, bracing, special connecting fasteners and elevators. The sweeping rod of the pedestrian ladder shall not exceed 30cm from the ground. The vertical distance of the vertical pole is 2.5m, and the horizontal distance is 1.3m, which is erected step by step. Pedestrian steps should be set with the erection of supports, and the connection should be firm.

Inclined rods are arranged around each section to be fixed, and the inclined rods are continuously arranged from bottom to top. Before installation, check whether each connecting fastener is complete and damaged. If you find any problems, please replace them immediately and do not use them. The erection height is synchronized with the pier height, which is convenient for the construction personnel to get up and down.

The pedestrian ladder is connected and fixed with the pier and tie beam. After pouring, the tie beam bolt holes are fixedly penetrated with steel bars and welded with steel pipes to avoid being blown by the wind. Set-up good pedestrian ladder with dense mesh around closed, and tied up. After the erection of the safety ladder, hang up the safety warning signs, which can only be used after the safety and quality department, engineering department and supervision have passed the acceptance.

2. Demolition of the safety ladder: comprehensively check whether the fastener connection, connecting pier system and supporting system of the safety ladder meet the structural requirements, and then implement it after being approved by the competent department; Demolition safety technical disclosure shall be carried out by the person in charge of the unit project; Debris and ground obstacles on scaffolding should be removed.

Demolition work must be carried out layer by layer from top to bottom, and simultaneous operation is strictly prohibited; The connecting pier system must be dismantled step by step with the pedestrian ladder. Before dismantling the pedestrian ladder, it is forbidden to dismantle the whole or several layers of connecting pier system. The height difference of sectional demolition should not be greater than 2 knots. If the height difference is greater than 2 knots, the connecting pier system should be added for reinforcement. When unloading, it is forbidden to throw all parts to the ground; Components transported to the ground should be inspected, renovated and maintained in time, and stacked and stored at any time according to varieties and specifications.