Standards on ensuring safety when concrete construction

Circular 16/2021/TT-BXD promulgating QCVN 18:2021/BXD National technical regulation on Safety in construction promulgated by the Minister of Construction.

General regulations on safety during concrete construction

Subsection 2.11 section 2 of the national technical regulation on construction safety issued together with the Circular No. 16/2021/TT-BXD on general regulations on assurance of safety for concrete construction:

- With regard to constructions with a structure or part of the structure using concrete on the spot, the work of temporary support (including the mold) and the concrete construction must be trained by the workers that perform relevant tasks under the supervision and regulation of the competent persons.

NOTE 1: The person having competence in supervising the mold and CDT prescribed in 2.3.

NOTE 2: The person authorized to supervise concrete structures shall comply with regulations of law on construction.

NOTE 3: The works using on-site concrete structures and pre-preparation structures, the construction and installation of structures are carried out in accordance with 2.10.

- The preventive measures must be taken to facilitate the workers and special attention must be paid to: the temporary supporting work to avoid the dangers that arise due to weak structure or stability; the risk of blackout due to blackout; the risk of unsafety when using machines and equipment to process steel, reinforced steel, transport and pour of concrete; the risk of burning upon use of welding machine and other heating machines; the risk of power failure upon concrete pouring.

- CDT (including formwork) must comply with the provisions of 2.3 and the additional provisions for the work of formwork in 2.11.2.

Standards on ensuring safety when concrete construction

Regulations on use of mortars for concrete construction

Subsection 2.11 section 2 of the National Technical Regulation on construction safety promulgated together with the Circular No. 16/2021/TT-BXD provides for use of construction projects as follows:

- Survey, design; construction and installation; safety test and assessment; inspection and supervision; observation, use and maintenance; dismantlement must comply with the provisions of from 2.3.1 to 2.3.7 and the following regulations:

+ Frame boards must be designed and installed in such a way that the work floor, the anti-stability system, stairs, slopes and other accessibility equipment can easily be installed and linked with the precinct;

+ Vertical or inclined frames shall be subject to inspection, installation and dismantlement under the supervision of experienced persons;

+ The layout drawing and the detailed information about the distance of the beams and the casual trees must be provided to the person in charge of construction;

+ Seeds and timber and bamboo protection plants must be of suitable size, have enough KNCL, be resistant to temperature and speed of concrete pouring;

+ Anti-casing and anti-casing systems must be locked after being adjusted;

+ A copy of the technical instructions and standards may be omitted;

+ Be entirely removed to avoid danger because of disassembly; unavailable parts must be resisted or firmly anchored;

+ Mechanical, hydraulic or compressed air lifting equipment used for the project must be equipped with automatic storage or brake to prevent any danger in case where the lifting equipment breaks down;

+ The lift equipment must not be smooth and clean and automatically disconnected to prevent breakdown of power or equipment.

- For special-use mould systems (sliding dies, leo dies): Survey, design, construction and installation, test, safety testing (if subject to testing as stated in point c of 2.1.5), use, dismantlement and other relevant works must comply with provisions from 2.3.1 to 2.3.7.

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