Mobile ladder. Mobile platform ladders shall be checked and accepted in accordance with current national standards. Those that do not meet the quality requirements should not be used. Fixed straight climbing ladder. The fixed straight climbing ladder shall be made of metal materials and shall be made of Class A No. 3 boiling steel. The width of the ladder should not be greater than 50cm, the support should be made of angle steel not less than L70X6, and the burying and welding must be firm.
The rung at the top of the ladder should be flush with the top surface of the climb, and the height should be 1~1.5m Handrails. When climbing up and down the ladder , one must face the ladder and use the three-point contact climbing method (that is, using both hands and one foot, or one hand and two feet), and only one person can stand at a single width at a time On the ladder.
Do not use lifting devices that carry objects to climb the roof, unless the lifting device is specifically for roof work And designed. Do not carry heavy, large, or dangerous objects at the same time when climbing a ladder. Suitable lifting devices should be used to carry items.
Only use heavy-duty ladders approved by relevant standards. The top of the ladder must be placed in a stable place. The ladder (Stepladder is not included) The top must be higher than the safety platform or retaining wall, about one meter. The slope of the ladder must be a ratio of 4 (height from the ground) to 1 (distance from the wall).
Do not use the folded stepladder as a general ladder against the wall. If possible, use it to spare Hold on to his hand. It is not safe to stand on two rungs or bucket racks on a ladder. Fully open the stepladder, lock the supporting gear in place, and climb or stand behind the ladder to make it fold or fall.