Srps En 13670 – Instant & High-Quality

One of the most important concepts in the standard is the Execution Class (EXC 1, EXC 2, or EXC 3). The class is determined by:

| Execution Class | Typical Applications | Required Level of Quality Control | |----------------|----------------------|-----------------------------------| | EXC 1 | Simple structures, low-risk (small houses, agricultural sheds) | Basic control, minimal testing | | EXC 2 | Common buildings and bridges (most standard projects) | Normal control, defined testing frequency | | EXC 3 | Complex, high-risk structures (nuclear facilities, high-rise, long-span bridges) | Strict control, third-party inspection, detailed documentation |

The project designer must specify the EXC. If not specified, EXC 2 is assumed by default.

SRPS EN 13670 sets strict limits on geometrical deviations. Even if concrete is strong, if it is built in the wrong place, it fails the standard.

It defines two tolerance classes:

Common tolerances include deviations in cross-section dimensions (e.g., a wall thickness) and vertical alignment (plumbness).

Formwork must be:

The standard specifies when formwork can be struck (removed) based on concrete strength development, typically requiring a minimum percentage of design strength.

The standard provides detailed technical instructions in several key areas: srps en 13670

SRPS EN 13670 is the Serbian adopted version of the European Standard EN 13670:2009, titled "Execution of concrete structures." The "SRPS" prefix indicates that this standard has been officially accepted as the national standard by the Institute for Standardization of Serbia (ISS).

It replaces older, fragmented national regulations and aligns Serbia with the Eurocode system (EN 1990 to EN 1999). While Eurocodes primarily deal with design, SRPS EN 13670 deals with the execution—how to transform a design on paper into a physical, safe, and durable concrete structure on site.

If your company bids for EU-funded projects (IPA, EBRD, World Bank) in Serbia, compliance with SRPS EN 13670 is a mandatory requirement. It signals that your execution quality matches European benchmarks.

Many construction liability insurance policies require adherence to applicable standards. Deviating from SRPS EN 13670 can void coverage in the event of a claim. One of the most important concepts in the

Experienced engineers in Serbia often compare SRPS EN 13670 to the old "Propisi za beton i armirani beton" (Pravilnik BAB 87). While BAB 87 was prescriptive (telling exactly how to do every task), SRPS EN 13670 is performance-based.

This shift requires contractors to invest in better on-site testing equipment (e.g., maturity meters for strength gain) and better record-keeping.