1. Which conditions qualified a scaffolding erecting worker?

Answer:

The scaffolding erecting workers must be the professional scaffolders who have got the qualification of “Rules for the assessment and management of safety technology for special operation personnel” according to the current national standard. Workers should get a periodic physical examination. Only qualified workers can take up posts with certificates.

2. What are the requirements for setting the diagonal bracing of the steel tube frame scaffolding according to the “Technical specification for the safety of steel pipe frame scaffolding for construction”?

Answer:

1)When the scaffolding height exceeds 20m, it shall be continuously set outside the scaffolding.

2)The inclined angle between the diagonal bracing inclined rod and the ground should be 45 degrees to 60 degrees, and the width of the diagonal bracing should be 4m to 8m.

3)Diagonal bracing should be fastened by use scaffolding couplers and frame scaffolding standard.

4)If the inclined rod of diagonal bracing spreads the length by lap joint, the lap length shall not be less than 600mm. The joints shall be fastened by two scaffolding couplers.

3. What is the requirement for the deviation between the overall perpendicularity and levelness of scaffolding in the erection of frame scaffolding?

Answer:

The allowable deviation of perpendicularity is 1/600 and 50mm of scaffold height; The allowable deviation of the levelness is 1/600 and 50mm of the scaffold length.

4. How are a load of masonry frame and decoration frame required?

Answer:

A load of masonry frame shall not exceed 270 kg per square meters. A load of decoration frame shall not exceed 200kg per square meters.

5. What anti-skid measures should be taken for herringbone ladder?

Answer:

There should be strong hinges and limited opening zippers. Anti-skid measures should be taken when encountering dry slippery ground.