First, Preparations Before Installation.
The planar position, elevation, diameter, and verticality of the pre-drilled bolt holes or embedded parts left during the structural construction should be verified. The strength grade of the concrete at the pre-drilled bolt holes or embedded parts should also be verified. Pre-drilled holes should be perpendicular to the outer surface of the structure.
A safe and reliable installation platform should be set up to bear the vertical load during installation. Safety protection measures should be provided on the installation platform. The horizontal accuracy of the installation platform should meet the installation accuracy requirements of the scaffold; the maximum height difference between any two points should not exceed 20mm.
Level the lower section and standard section of the main frame with wooden blocks, insert bolts (M16×50, M16×90), washers, and tighten all bolts. Note: When splicing, align the guide rails between every two sections; assemble and install the guide device in the corresponding position; fix the supports (attached support structure) to the corresponding connection positions on the main frame, and tighten them.
Second, Lifting the Attached Lifting Scaffold.
(1) Once the concrete strength reaches the design requirements, reliably connect the supports to the structure;
(2) Use lifting equipment to hoist the assembled main frame, with the hoisting point located at the upper 1/3 position;
(3) According to the requirements of the attached lifting scaffolding scheme, temporarily fix the main frame to the building structure.
(4) Install the bottom truss and erect the scaffolding body.
Post-installation commissioning and acceptance of the attached lifting scaffolding.
(1) For the scaffolding structure using coupler-type scaffolding members, the fastener tightening quality should be randomly checked at a rate of 50%, with a pass rate of over 95%;
(2) All threaded connections should be inspected.
(3) A scaffolding lifting test should be conducted to check whether the lifting equipment is operating normally.
(4) The overall protection of the scaffolding should be inspected.
(5) Other necessary inspection and debugging items.
Use of Attached Lifting Scaffolding
(I) Lifting of Attached Lifting Scaffolding
General lifting strategy: Insert the anti-fall pin, lift the lifting support to the top layer and fix it, disassemble the adjusting top support, adjust and pre-tighten the electric lifting equipment, remove the load-bearing pin of the load-bearing support, and loosen the anti-fall device. Lift the scaffolding body, insert the anti-fall pin on the upper part of the support, install the load-bearing pin on the load-bearing support, install the adjusting top support on the anti-fall support, lock the anti-fall device, and use it.
(II) Preparatory Work Before Lifting the Attached Lifting Scaffold
① The actual strength of the concrete at the attachment point of the support structure has reached the design requirements of the scaffold.
② All bolt connections and nuts have been tightened.
③ All construction live loads that should be removed have been removed;
④ All obstacles have been removed, and all unnecessary constraints have been lifted;
⑤ The electric lifting system is functioning normally.
⑥ All relevant personnel are in place, and all irrelevant personnel have been evacuated.
⑦ All reserved bolt holes or embedded parts meet the requirements;
⑧ All fall protection devices are functioning normally;
⑨ All safety measures have been implemented;
⑩ Other necessary inspection items;
(III) Inspection and Acceptance After Lifting the Attached Lifting Scaffold
(1) Check whether the bolts and nuts after disassembly and assembly are truly in accordance with the torque requirements. (1) Tighten the bolts properly and check if any bolts are missing; temporary scaffold poles removed from the scaffold and connecting poles to the building must be overlapped according to regulations, and check if the scaffold poles and safety nets are properly secured.
(2) Check if the load-bearing pins and top supports are installed properly.
(3) Check if the fall arresters are locked.
(4) After the scaffold is lifted, the person in charge of the attached lifting scaffold construction shall organize a thorough inspection and acceptance of all parts of the scaffold. An inspection record must be kept for each span of scaffold, and any problems must be rectified immediately.
(5) After the inspection is passed and meets the usage requirements, the person in charge of the attached lifting scaffold construction shall fill out the “Attached Lifting Scaffold Construction Inspection and Acceptance Form,” and it can only be put into use after both parties have signed and stamped it.
(IV) Precautions during the lifting process of the attached lifting scaffold
(1) If any abnormal situation occurs during the lifting process, the lifting must be stopped immediately for inspection. The cause must be thoroughly investigated, and the fault eliminated before lifting can continue. A detailed written record should be made for each abnormal situation.
(2) During the lifting process of the integral electric attached lifting scaffold, if excessive overload or underload occurs due to asynchronous lifting power (height difference between two adjacent main frames exceeding 50mm), it should be adjusted by jogging through the control cabinet.
(3) When attached lifting scaffolds near tower cranes or construction elevators are being lifted, the tower cranes, construction elevators, and other equipment should be temporarily shut down. (4) After the scaffolding is raised to the correct position, it must be secured promptly.
Third, Mandatory Provisions of the Construction Specifications for Attached Scaffolding
(I) The dimensions of the attached scaffolding structure shall comply with the following provisions:
(1) The height of the scaffolding body shall not exceed 5 times the floor height;
(2) The width of the scaffolding body shall not exceed 1.2m;
(3) For scaffolding bodies arranged in a straight line, the span of the support shall not exceed 7m. For scaffolding bodies arranged in a broken line or curve, the distance between the outer sides of the scaffolding bodies at adjacent main frame support points shall not exceed 5.4m;
(4) The horizontal cantilever length of the scaffolding body shall not exceed 2m and shall not exceed 1/2 of the span;
(5) The product of the total height of the scaffolding body and the support span shall not exceed 110㎡.
(II) The attached support structure shall include wall-mounted supports, cantilever beams, and diagonal tie rods, and its construction shall comply with the following provisions:
(1) A wall-mounted support shall be installed at each floor covered by the vertical main frame;
(2) During operation, the vertical main frame shall be fixed to the wall-mounted supports.
(3) During lifting operations, the wall-mounted supports shall be equipped with anti-tilting and guiding structural devices;
(4) The wall-mounted supports shall be connected to the building using anchor bolts. The tension bolts shall have no fewer than two nuts, or a spring washer plus a single nut shall be used. The length of the bolt protruding from the nut end shall be no less than three turns and no less than 10mm. The size of the washer shall be determined by the design and shall not be less than 100mm × 100mm × 10mm;
(5) The strength of the concrete at the connection point between the wall-mounted support and the building shall be determined according to the design requirements, but shall not be less than C10.
(6) The cantilever height of the scaffolding shall not exceed 2/5 of the scaffolding height and shall not exceed 6m.
(III) Material platforms must not be connected to any part or structural component of the attached lifting scaffold; their loads must be independently and directly transferred to the building structure.
(IV) Attached lifting scaffolds must have safety devices for anti-overturning, anti-falling, and synchronous lifting control.
(V) Fall protection devices must meet the following requirements:
(1) Fall protection devices should be installed on the vertical main frame and attached to the building structure. Each lifting point must have at least one fall protection device, and these devices must function during use and lifting operations.
(2) Fall protection devices must be fully automatic mechanical devices; manual devices requiring reassembly with each lift are strictly prohibited.
(3) In addition to meeting load-bearing capacity requirements, the technical performance of fall protection devices must also comply with the provisions of Table 4.5.3.
(4) Fall arrest devices shall have dustproof and pollution-proof measures, and shall be sensitive, reliable, and easy to operate;
(5) Fall arrest devices and lifting equipment must be separately and independently fixed to the building structure;
(6) For steel rod-type fall arrest devices, the specifications of the steel rod shall be determined by calculation, and shall not be less than ∮25mm.
Post time: May-06-2026