GOST 34278-2017 PDF

Full title and description

GOST 34278-2017 — "Соединения арматуры механические для железобетонных конструкций. Технические условия" / "Mechanical reinforcement couplers for reinforced concrete structures. Specifications". The standard defines technical requirements, acceptance rules, test methods, marking, storage and manufacturer guarantees for mechanical couplers (splice/joint devices) used with periodic-profile reinforcement bars in prefabricated and cast-in-place reinforced concrete structures.

Abstract

GOST 34278-2017 sets performance and quality requirements for mechanical connections of reinforcement (couplers) intended for use with periodic-profile reinforcing bars of classes A400, A500 and A600 in diameters from 12 mm to 40 mm. It covers design/performance verification, sampling and testing procedures, marking, transportation and storage, and includes Annexes on attestation of personnel and conformity assessment of serial production. The standard was developed to align national practice with international guidance (references the ISO series for reinforcement couplers).

General information

• Status: Previously in force; superseded (withdrawn) — replaced by GOST 34278-2024 (document lost force as of 01.06.2025 by Rosstandart order).
• Publication date: Approved 06 October 2017 (Order of the Federal Agency for Technical Regulation and Metrology), date of entry into force 01 January 2018.
• Publisher: Federal Agency for Technical Regulation and Metrology (Rosstandart); printed/issued via Стандартинформ.
• ICS / categories: 91.190 (Construction materials and building — fittings for buildings / reinforcement).
• Edition / version: First edition (GOST 34278-2017).
• Number of pages: 12 pages (typical published length for the standard text).

Scope

The standard applies to mechanical connections of periodic-profile reinforcing bars used in manufacturing and installation of precast and erection of monolithic reinforced concrete structures for buildings and structures of various purposes. It establishes requirements for couplers used with reinforcement classes A400, A500 and A600 with diameters from 12 mm to 40 mm (as referenced to GOST 34028 and related normative documents), including requirements for mechanical performance, inspection and testing, marking, transport, storage and manufacturer guarantees.

Key topics and requirements

• Definition of permitted types of mechanical couplers (threaded, pressed/crimped, compression-type and other mechanical splice designs) and their intended use.
• Applicable reinforcement grades and diameter ranges (A400, A500, A600; 12–40 mm) and reference to GOST 34028 for reinforcement properties.
• General technical requirements for strength and ductility of coupler-joined bars, including test methods and acceptance criteria.
• Rules of acceptance (sampling, inspection) and methods of testing, including mechanical testing procedures.
• Marking, packaging, transportation and storage requirements for couplers and associated documentation.
• Requirements for attestation (qualification) of personnel performing splicing (Appendix A) and rules for conformity assessment of serially produced mechanical connections (Appendix B).
• References and alignment with international standards (notably ISO 15835 series and other testing standards).

Typical use and users

Primary users are manufacturers of mechanical couplers, producers of prefabricated reinforced concrete elements, construction contractors using spliced reinforcement on site, design and structural engineers specifying reinforcement splices, testing laboratories performing type and acceptance tests, and conformity assessment / certification bodies. Regulators and standardization bodies also consult the standard when establishing national technical requirements.

Related standards

Commonly cited standards and documents in relation to GOST 34278-2017 include: GOST 34028 (requirements for reinforcing steel), ISO 15835 (series on mechanical couplers for reinforcement / related ISO guidance), GOST 12004 (tensile test methods for reinforcing-bar steel) and other normative technical references used for test equipment and measurement. The standard itself references relevant testing and measurement GOSTs and industry documents.

Keywords

mechanical couplers; reinforcement splices; rebar couplings; reinforcement joints; periodic-profile bars; A400; A500; A600; rebar diameters 12–40 mm; acceptance tests; marking and storage; ISO 15835.

FAQ

Q: What is this standard?

A: GOST 34278-2017 is a national/interstate standard that defined technical requirements and test/acceptance procedures for mechanical couplers used to join reinforcing bars in reinforced concrete structures.

Q: What does it cover?

A: It covered types of mechanical connections for periodic-profile reinforcement, applicable reinforcement classes and diameters (A400/A500/A600, 12–40 mm), mechanical performance requirements, testing and acceptance rules, marking, transport and storage, plus annexes on personnel attestation and serial-production conformity assessment.

Q: Who typically uses it?

A: Manufacturers of couplers, precast concrete producers, site contractors, structural engineers, testing laboratories, certification bodies and regulators.

Q: Is it current or superseded?

A: GOST 34278-2017 was in force from 01 January 2018 but was withdrawn (lost force) effective 01 June 2025 following Rosstandart action; it was replaced by GOST 34278-2024 (new edition). Users should reference the replacement standard (GOST 34278-2024) for current requirements.

Q: Is it part of a series?

A: The standard aligns with international guidance for reinforcement couplers (ISO 15835 series and related ISO documents) and is used alongside other national GOSTs governing reinforcing steel and test methods; it sits within construction materials/fitments classifications (ICS 91.190).

Q: What are the key keywords?

A: Mechanical coupler, reinforcement splice, rebar coupling, periodic-profile bar, A400/A500/A600, threaded/pressed/compression coupler, acceptance tests, marking.