General provisions for mobile bamboo and wood ladders

1. The wooden ladder pillar (column) should use high quality Chinese fir wood, bamboo ladder pillar (column) should use small head diameter greater than 7cm of four-year bamboo;The ladder cross application tenon, embedded pillar (column) spacing should be 30cm, there should be no gaps, the bottom width of the ladder should be greater than 50cm.

2. The two ends of the column (pillar) shall be connected by screw or iron wire; If the ladder is longer than 3m, a fastening bolt shall be installed in the middle of the ladder.

3. The herringbone ladder should have strong, flexible hinges and zippers with limited opening angles.

General provisions for mobile light metal ladders

The ladder production should meet the national standards, there should be a product certificate, there should be no skew, no distortion and other defects affecting the use; Pedal should make anti-skid processing, ladder foot application synthetic rubber makes anti-skid processing. The metal ladder is provided with a platform, and there should be a strong connection device between the platform and the ladder; The highest safe standing position should be painted with clear red marks.

General provisions for steel ladder climbing

The application of A3 steel production, the hook should be no scars, no cracks, transverse welding must be firm length over LOM ladder, every 5m should be firmly connected with the construction, structure fixed; Every 3m of the ladder should be set up a 15cm long foot.

General provisions for rope ladders

1. The rope ladder shall meet the national standard and shall have the factory certificate.

2. It should be set up by professional workers and must be firmly connected to a reliable support when used. It should be checked carefully before use. We should take reliable measures to prevent fire, wear, corrosion and moisture.