Specification requirements for reserved construction lift grating openings

The requirements of this specification are as follows:

1. According to the "Standardized Management Regulations for Construction Safety", a standardized and solid protective shed should be erected above the inlet of the construction elevator. Stair entrances, passage entrances, reserved openings, elevator shaft entrances and edge protection at the construction site should also be strictly protected.

2. The "Safety Technical Regulations for the Installation, Use and Dismantling of Construction Lifts" also contains relevant regulations. This regulation stipulates the requirements for the installation conditions, installation operations, preparations before use, operation and use, inspection, maintenance and repair of construction lifts.

3. According to the "Safety Technical Points for Construction Lifts (Construction Elevators)", construction lifts should be equipped with attachment devices in accordance with the instructions for use, and the angle between the attachment frame and the horizontal plane should not exceed 8 degrees. The attachment point should be set on the main beam of the structural frame or shear wall, and should be fixed with reserved holes through the wall bolts.