Cast in Sockets

（2） 19.

Check whether there is a transportation and storage plan for precast components (including transportation time, route, sequence, stacking site, pad, fixed and protective measures for finished products, and special measures for super wide, super high, and complex special-shaped components).

10.

of the first floor (transfer floor) and above of the cast concrete structure meet the design and specification requirements.

Before construction, check whether special safety plans (including plane layout, lifting construction safety, peripheral protection system, vertical transportation equipment, personnel management, etc.) and emergency plans have been prepared, and whether experts have been organized to discuss large-scale dangerous projects.

meet the requirements.

22.

13.

For new technologies, new processes, new materials and new equipment involved in special operation platforms for construction, protective facilities for work at heights and near edges, which have no normative basis, check whether special construction plans have been prepared and whether experts have been organized for systematic demonstration.

Check whether the supervision unit organizes the mobilization acceptance of precast components, focusing on whether the acceptance procedures and acceptance contents (quality certificates, apparent quality of components, on-site supervision records, etc.) are standardized.

Check whether the plane layout of the construction site can meet the safety requirements for loading, unloading, stacking, transportation and hoisting of various components, whether the site has set up a dedicated storage yard for components, and whether the hoisting area is defined.

Check whether the construction unit has prepared the special construction plan, focusing on whether the content of the construction plan is standardized and whether the approval, signature and seal procedures are complete.

When the reinforcement adopts sleeve grouting connection and mortar anchor overlapping connection, check whether the reinforcement sleeve grouting connection joints are grouted in time according to the requirements of inspection lot division, whether all connected grouting areas are blocked before grouting, whether all outlets are grouted during grouting, and whether full-time inspectors are responsible for on-site supervision and timely formation of construction inspection records (concealed records and image data) throughout the grouting operation.

4.

Whether special operation personnel have certificates.

18.

11.

Check whether the precast concrete structure construction has reliable edge protection, external enclosure facilities and horizontal protective layer.

8.

During acceptance 15.

Check whether safety facilities and equipment such as enclosure facilities, hoisting and vertical transportation equipment are used after acceptance.

Notice on Printing and Distributing the Key Points for Quality and Safety Supervision and Inspection of Fabricated Concrete Structure Engineering, the competent construction departments of counties (cities), districts and development zones, and the engineering quality and safety supervision institutions at all levels: In order to further improve the quality and safety supervision and management of precast concrete structure engineering, and standardize the supervision and inspection of precast concrete structure engineering, our bureau has formulated the Key Points for Quality and Safety Supervision and Inspection of Fabricated Concrete Structure Engineering.

（3） 15.

2.

23.

Attachment: Key Points for Quality and Safety Supervision and Inspection of Fabricated Concrete Structure Project Hefei Urban and Rural Construction Bureau October 1, 2022 Attachment: Key Points for Quality and Safety Supervision and Inspection of Fabricated Concrete Structure Project I, Key Points for Quality Supervision and Inspection (I) Before Construction 1.

Whether there are cross operations within the lifting radius of the component.

7.

2、 Key points of safety supervision and inspection (I) 16.

12.

Check whether the axis, elevation, reinforcement specification and length, reinforcement position and spacing, sleeve grouting plumpness, component connection flatness, component installation perpendicularity, component non sleeve connection reliability, etc.

When the single building is constructed above the first floor of the precast concrete structure, check whether the first floor is accepted.

3.

Check whether the construction unit has conducted safety education and training and safety technical disclosure for precast member hoisting operators, assembly workers and relevant personnel.

Check whether the waterproof materials and construction methods of the connection joints of precast components meet the design and specification requirements.

20.

Check whether the precast components have factory marks and two-dimensional codes, whether the appearance has quality defects such as cracks and damages, and whether the positions of reserved holes, reserved holes, embedded parts, reserved dowels, keyways, and the area and concave convex depth of rough surfaces meet the design and specification requirements.

6.

Check whether the precast building project model room is completed before the construction of the first floor precast structure of the first single project, and whether each responsible unit has conducted physical acceptance and formed written acceptance opinions.

Check whether the project carries out on-site supervision, focusing on whether the staffing, implementation scope, implementation procedures, measures and methods of the on-site supervision organization meet the requirements of the on-site supervision implementation plan.

It is hereby printed and distributed to you.

Please earnestly implement it.

Before the acceptance of concrete structure subproject, check whether the acceptance of precast concrete structure subproject meets the requirements of Chapter 10 of DB34/T5043-2016.

14.

Check whether operators at key posts (including grouting workers, component assemblers, etc.) have received special training and whether they can work after passing the examination.

Check whether the materials, certificates and retest reports of reinforcement sleeves, grouting materials, insulation connectors, sealants, etc.

Check whether the specification and installation of the reinforcement of the post cast concrete meet the design and specification requirements, whether the concrete pouring and curing meet the requirements of the construction scheme, and whether the temporary fixing measures are removed before the strength of the post cast concrete and grouting materials at the connection parts of the components meet the design requirements.

Check whether the construction drawings such as relevant design instructions, component splitting drawings, connection node details, and structural details of precast concrete structures are complete and whether the design depth meets the requirements.

Source: Hefei Urban Construction Bureau, please contact to delete any infringement.

During construction, check whether fixing measures are taken to prevent members from moving sideways or toppling when members are stacked.

21.

When the overall lifting scaffold is used for safety protection, check whether it is constructed by a professional team with corresponding qualification level, and whether the overall lifting scaffold has a reliable connection system with the structure..

17.

（2） During construction 9.

Check whether the technical scheme and assembly rate indicators of precast building project have been reviewed, approved and recognized by experts.

5.