What is Suspended Scaffolding? What is cantilevered scaffolding

Cantilever scaffold generally adopts "14" I-beam to do horizontal lifting rod (3 5m long, pre-embedded 14 steel ring fixation in the cast-in-situ roof of the floor) and wire rope (6 19, the wire rope of scaffold unloading is connected with the outer end of the I-beam through the reserved hole in the outer wall of the upper layer and the steel pipe is pulled and connected with the outer end of the I-beam) to form a bearing frame, and then a double row of single vertical rods is erected upwards on the bearing frame. The cantilever erection height is. The inner vertical rod is far from the outer skin of the structure, the horizontal distance is 1m, and the longitudinal distance is large and the crossbar step distance.

The vertical spacing of the wall pieces is 3m. Except for the absence of unloading devices and pedestrian walkways, the rest of the construction requirements are the same as fastener steel pipe scaffolding.

Suspended scaffold refers to the scaffold that is pulled up along the wall with a wire rope and the workbench is slid on it, and is often used for roof panel joints and grout brushing with a clear height of more than that. Pick scaffolding refers to the scaffolding erected in the form of cantilever, and the basic form has two types: support rod type and beam type.

The full scaffolding is erected in the whole area of the room, and the full scaffolding must belong to the scaffolding, which is relative to the single-row and double-row scaffolding attached to the wall or column, and is generally erected according to the needs of the roof construction, and the erection area is generally equal to the indoor clearance area, because the construction personnel need to operate back and forth on the horizontal plane of a fixed height. Full scaffolding is divided into sub-sections by base layer (the height of which is between meters and meters) and additional layers (per additional meter). It is suitable for the ceiling decoration project above the indoor clear height meter and the scaffolding of the full foundation project, which is divided into; Wooden, bamboo and steel pipe frames.

There are generally two kinds of cantilevered scaffolding: one is a lift for each floor, the bottom of the vertical rod is topped on the building parts such as floors, beams or walls, and after being tilted outward, a crossbar is erected on its upper part, and a scaffold board is laid to form a construction layer, and a layer of construction is constructed, and after being transferred to the upper floor, the scaffold is re-erected to provide the upper layer of construction; The other is a multi-layer cantilever, which divides the full-height scaffolding into several sections, and the height of each section does not exceed 20m.

Suspended scaffolding is scaffolding such as passages erected between two buildings; Cantilever scaffolding is a scaffold composed of a crossbar or oblique rod that is composed of a crossbar or oblique rod from a door or window, and then a railing is set up and a scaffold board is laid.

Scaffolding Specifications.

Scaffolding is absolutely not allowed to float.

The scaffolding foundation can be leveled and tamped, the concrete can be hardened, and the landing pole can be placed vertically on the metal base or concrete prefabricated blocks with sufficient strength.

1. The connecting wall pieces are reliably connected by rigid tie steel pipe buildings. Rigid pulling joints can be used with embedded steel pipes.

2. The connecting wall pieces should be set close to the main node, and the distance from the main node should not be greater than 300mm3, and it should be set from the first longitudinal horizontal rod of the bottom layer. It is advisable to give priority to the diamond-shaped layout, and can also use square and rectangular layout. Slotted and open scaffolding must be provided with wall pieces at both ends.

The surface of the wall pieces should be painted with red eye-catching paint, which is convenient for fruit inspection and warning.

There are too many specifications for scaffolding.

Cantilevered feet are pure staring racks.

Chaos and a kind of building using pants to get to the improvised facilities.

Cantilevered scaffold refers to the scaffolding of the frame structure unloaded on the rigid cantilevered beam (frame) attached to the building structure, which is used for the operation and safety protection needs of the main beam body or decoration project in the construction of the building, and the height of each section shall not be greater than 24m.

According to the "Safety Technical Code for Fastener-type Steel Nyla Front Pipe Scaffolding for Building Construction" JGJ-130-2011, the cantilever scaffold should be provided with a cantilever wire rope (i.e., one pick and one pull) at the outer end of each steel cantilever beam.

If the interval setting is adopted, it is recommended that the scaffolding erection construction plan should be determined through the design and approval.

1. Article 6, 10, 4 of the code: the outer end of each section steel cantilever beam should be provided with a wire rope or steel tie rod and a diagonal tie knot with the previous layer of building structure. Wire rope and steel tie rod do not participate in the calculation of the force of the cantilever steel beam; The lifting ring of the wire rope and the building structure should be made of HPB235 grade steel bar, and its diameter should not be less than 20mm.........

2. The diameter of the wire rope should not be less than 14mm; The wire rope should use special hooks and flower basket bolts; When using other methods, the clips of the clamp head shall generally not be less than 3;

3. The wire rope around the sharp angle of the building should be lined with soft cushions.

Summary. Erection plan.

Start from the construction sequence: in line with the principle of bottom-up erection, each floor is a construction section according to the design regulations.

Its sequence: the first layer of the roof embedded steel ring, cantilever steel pipe, column rod to sweep the floor and step crossbar, to build longitudinal crossbar and scissor support, to lay scaffolding, to build a protective railing, to set up an attachment to connect with the column, to hang a safety mesh net to remove.

The third floor is the second section of construction).

Then there is the erection height: by building.

The second and third floors are each a construction section, and the total height does not exceed 20m.

Anyway, you can use a single row of external scaffolding.

Whether cantilevered scaffolding can use a single row of external scaffolding.

Hello Yes, the main thing is to do a good job of pulling the joint. It is normal to change to a single row of shelves because of structural reasons.

Are there any current norms that support your claim?

Finishing ......Please wait a moment.

Comprehensively considering the non-street façade of the commercial building, the selection is cantilevered single-row steel pipe scaffolding, and the street is cantilevered double-row steel pipe scaffolding.

It's a bit long, huh.

The erection plan starts from the construction sequence: in line with the principle of bottom-up erection, each layer is a construction section according to the design regulations, and its order: the first cavity dust layer roof is embedded with pure grinding steel rings, cantilever steel pipes, column rods, sweeping crossbars and step crossbars, longitudinal crossbars and scissor braces, paving scaffolding, erecting protective railings, setting up attachments, connecting with columns, hanging safety dense mesh nets, demolishing (the third layer is the second section of construction), and then it is the erection height:

By building. The second and third floors are each a round bucket section, and the total height does not exceed 20m. Anyway, you can use a single row of external scaffolding.

What I needed was a specification that would support my approach to turning a double row of racks into a single row of racks when I encountered an air conditioning panel.

Wow......Boss: You need to hire a professional team, please move to the local construction company to find out, thank you.

Precautions for cantilever scaffolding erection:

First, the channel steel is not closed, such as allowing random drilling, drilling.

2. The channel steel should be welded with the embedded anchor steel bar, and the welding should meet the relevant regulations and quality requirements, and the length of the weld of each steel bar must reach 30mm, and the thickness of the welded state must reach 8mm.

3. The opening of the right-angle fastener fastening the large crossbar should be facing upward, and the opening of the butt fastener should be facing up or inward.

4. The butt joints of the large crossbars should be staggered, not located in the synchronous and same span, and should be avoided in the middle of the span, and the horizontal distance of the adjacent joints should not be less than 500mm.

5. The connecting wall rod shall be connected horizontally or in an oblique manner to one end of the scaffold, and one end of the scaffold shall not be connected upward.

Sixth, in the construction in strict accordance with the sail state of the provisions of the structural size and erection sequence for erection, control the vertical deviation of the pole and the horizontal deviation of the crossbar, when installing the bolts, attention should be paid to the root and maintain the appropriate degree of tightening, to ensure that the node connection meets the requirements.

7. When decorating the operation, only a single layer can be operated.

8. When dismantling the scaffolding, before removing the last connecting wall rod, the throwing brace must be set up before the connecting wall rod is removed.

What is the specific content of the cantilevered scaffold base, the following Zhongda Consultation will answer for you.

1. The cantilever scaffolding erection group must prepare a special construction plan, and the plan must include the most picky plane positioning and layout drawing.

2. The cantilever beam of the cantilever scaffold must be not less than 1 6 I-beam. The floor is embedded with a 20U-shaped ring, and rebar shall not be used, and the specific model must be determined by design calculation.

3, the anchorage section that falls on the structure should be the times of the cantilever section and must take two anchors, each cantilever beam should be added with cable-stayed wire rope, and the height of the frame segmented cantilever is not greater than 20m

4. The bottom of the scaffold should be set up along the vertical and horizontal directions according to the requirements of the specification, and the upper surface of the cantilever sorghum should be welded with steel bars to fix the pole, and the wooden fang should be laid along the length of the scaffold above the crossbar, and the well is full of formwork for protection.

5. A 200mm high skirting board should be set on the pure side of the vertical rod at the bottom of the scaffold.

6. The erection and protection of rods are the same as those of the above-mentioned floor-type outer frame.