All sides of the working platform shall be installed with top guard-rails (900-1150mm height), intermediate guard-rails (450-600mm height), toe-boards (200mm height) and safe access and egress.

• 工作台的所有方向都应安装顶端护栏（900-1150毫米高），中间护栏（450-600毫米高），踢脚板（200毫米高）和安全进出口。