The difference between portal scaffold and ladder scaffold

A door frame is a structure used for supporting and fixing objects, usually consisting of beams, posts, and supports. Door frame is mainly divided into door door frame and ladder door frame.The structure form of the gantry is a beam support column, similar to the shape of a door, because the structure is relatively simple, beam column structure directly, so the bearing capacity is strong, suitable for large span, large space, such as factory, warehouse。

the ladder gantry is composed of a series of cross support beam, shape like a ladder, because the cross beam column structure, so the bearing capacity is weak, suitable for small span, small space, such as shopping malls, parking lot.

Advantages of portal scaffolding:

1. The structure is stable, it can bear a large load, and it can meet the needs of large construction projects.
2. Simple installation and disassembly, easy to move, can be quickly assembled and disassembly, improve the construction efficiency.
3. Cross support can be adjusted, can adapt to different construction environment and needs, with good adaptability.
4. Equipped with an adjustable base and a fixed base, it can adapt to different ground conditions, but also enhance the stability of the scaffold.

Disadvantages of portal scaffolding:

1. The height of the portal scaffold is fixed, and the height cannot be adjusted. Therefore, for the construction projects of different heights, the scaffolding of different height is needed, which increases the cost.
2. The width of the portal scaffold is fixed, and the width cannot be adjusted. Therefore, for the construction projects of different widths, the scaffolding of different widths needs to be used, which increases the cost.
3. Portal scaffold accessories are more, need to carry out tedious assembly and disassembly, for the use of the requirements are higher.

Advantages of ladder scaffolding:

1. The height and width of the ladder scaffold can be adjusted, can adapt to different height and width of the construction projects, with better flexibility.
2. Ladder scaffolding accessories are less, assembly and disassembly is relatively simple, for the use of the requirements are low.
3. The price of ladder scaffolding is more affordable, which can reduce the construction cost.

Disadvantages of ladder scaffolding:

1. The support strength of ladder scaffolding is relatively weak and cannot bear a large load, which is not suitable for large construction projects.
2. The erection and disassembly of ladder scaffolding requires certain skills and experience, and the requirements for users are high.
3. The safety performance of ladder scaffolding is relatively low, so safety measures need to be strengthened to ensure construction safety.

Because of the simple structure, the construction and installation are relatively easy. Because of the complex structure of the ladder door frame, the construction and installation is relatively difficult. In general, the gantry is suitable for large space, with strong bearing capacity; ladder gantry is suitable for small space, construction and installation is relatively difficult. The specific choice of which gantry structure should be considered according to the specific requirements of different places.