EN 12059:2008+A1:2011

Natural stone products - Dimensional stone work - Requirements

This European Standard specifies requirements for the following stone units:
a)   Structural solid stone units:
i.   Load bearing stone elements, typically subject to prevailing compression stresses, such as solid columns, arches and similar;
ii.   Solid stone elements used for parapets, handrails, balustrades, copings and the like, intended to withstand horizontal live loadings in addition to any dead load.
b)   Finishing solid stone units:
i.   Curved cladding panels, for the external finishing of walls, columns or pilasters;
ii.   Stone elements for framing one or more side openings in building walls or floors, such as sills, jambs, architraves and similar.
This European Standard does not include stone masonry units, as defined in EN 771-6, stone which is a ‘cast-on’ finish to pre-cast concrete or agglomerated stones. Moreover it does not cover commemorative or funeral stones and sculptures, when they do not show the above mentioned characteristics.

Natursteinprodukte - Steine für Massivarbeiten - Anforderungen

Diese Europäische Norm legt Anforderungen an die folgenden Steinelemente fest: a) Strukturelle feste Steinelemente. i) Lasttragende Steinelemente, üblicherweise den maßgeblichen Druckspannungen ausgesetzt, wie feste Säulen, Bögen und ähnliches; ii) Feste Steinelemente für Brüstungen, Handläufe, Balustraden, Mauerabdeckungen und ähnliches, die zusätzlich zu jeglichen Eigenlasten horizontalen Nutzlasten widerstehen müssen. b) Abschließende feste Steinelemente. i) Gekrümmte Bekleidungsplatten für die Außenbekleidung von Wänden, Säulen oder Wandpfeilern; ii) Steinelemente zur Rahmung einer oder mehrerer Seitenöffnungen in Gebäudewänden oder -decken, wie Schwellen, aufrechte Rahmenteile, Sockel und ähnliches. Diese Europäische Norm gilt nicht für Steinelemente für Mauerwerk, wie in EN 771-6 definiert, Gestein als „angegossene“ Oberfläche von Fertigbeton, oder Gesteinskörnungen. Sie gilt auch nicht für Denkmale und Grabsteine und Skulpturen, wenn sie nicht die oben genannten Merkmale aufweisen.

Produits en pierre naturelle - Pierre de taille - Exigences

La présente Norme européenne fixe les exigences relatives aux éléments de pierre suivants :
a) Éléments de construction massifs en pierre :
i) Éléments porteurs en pierre, généralement soumis à des contraintes en compression, tels que colonnes
et arches massives, par exemple ;
ii) Éléments massifs en pierre, utilisés pour les parapets, mains courantes, balustrades, couronnements et autres
éléments similaires, destinés à résister à des charges horizontales sous tension, en plus de tout poids mort.
b) Éléments de finition massifs en pierre :
i) Panneaux cintrés de revêtement attaché, pour la finition extérieure de murs, colonnes ou pilastres ;
ii) Éléments en pierre utilisés pour encadrer une ou plusieurs ouvertures latérales dans des planchers ou murs
de construction, tels que seuils, huisseries, chambranles et autres éléments similaires.
La présente Norme européenne n’inclut ni les éléments de maçonnerie en pierre définis dans l’EN 771-6, ni les
pierres sous forme de finition moulée sur du béton précontraint, ni les pierres agglomérées. Elle ne couvre pas non
plus les sculptures et pierres funéraires ou commémoratives lorsqu’elles ne présentent pas les caractéristiques
mentionnées plus haut.

Proizvodi iz naravnega kamna - Dimenzijsko obdelan kamen - Zahteve

Ta evropski standard določa zahteve za naslednje zidake iz kamna:
a) konstrukcijski zidaki iz trdnega kamna:
i. nosilni elementi iz kamna, ki so običajno izpostavljeni prevladujočim tlačnim napetostim, kot so trdni stebri, oboki in podobno;
ii. elementi iz trdnega kamna, ki se uporabljajo za parapete, ograje, ograje iz stebričkov, strešne dodatke in podobne konstrukcije, ki morajo poleg lastne teže prenašati tudi vodoravne koristne obremenitve poleg lastne teže.
b) zaključni zidaki iz trdnega kamna:
i. ukrivljeni fasadni paneli za zunanjo zaključno obdelavo zidov, stebrov ali pilastrov;
ii. elementi iz kamna za uokvirjanje ene ali več stranskih odprtin pri grajenju zidov ali tal, kot so pragovi, podboji, arhitravi in podobni elementi.
Ta evropski standard ne zajema zidakov iz kamna iz standarda EN 771-6, ki opisuje kamen kot »nalito« zaključno obdelavo predizdelanega betonskega ali aglomeliranega kamna. Poleg tega ne zajema kamna za spomenike ali nagrobnike in skulpture, kadar nimajo zgoraj navedenih značilnosti.

General Information

• Status: Published
• Publication Date: 20-Dec-2011
• ICS: 91.100.15 - Mineral materials and products
• Technical Committee: CEN/TC 246 - Natural stones
• Drafting Committee: CEN/TC 246/WG 3 - Product specifications
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 30-Sep-2025
• Completion Date: 22-Oct-2025
• Ref Project: SIST EN 12059:2008+A1:2012 - Natural stone products - Dimensional stone work - Requirements

Relations

• Merged From: EN 12059:2008 - Natural stone products - Dimensional stone work - Requirements
• Effective Date: 19-Jan-2023

Overview

EN 12059:2008+A1:2011 (CEN) - Natural stone products - Dimensional stone work - Requirements - specifies dimensional, material and performance requirements for solid natural stone units used as structural and finishing elements in buildings. It covers load-bearing units (columns, arches), horizontal elements resisting live loads (parapets, copings, balustrades), and finishing elements (curved cladding panels, sills, jambs, architraves). The standard excludes stone masonry units (see EN 771-6), cast-on finishes, agglomerated stones, and commemorative or sculptural items that do not meet the defined characteristics.

Key topics and technical requirements

The standard defines measurable requirements and testing references for dimensional stone work, including:

• Geometric characteristics

  • Thickness tolerances (e.g., ±10% for nominal thickness 15–30 mm; ±3 mm for 30–80 mm; >80 mm ±5 mm), with stricter tolerances optional by supplier.
  • Flatness: deviation ≤0.2% of length and ≤3 mm (except natural cleft faces).
  • Length/width tolerances (different bands for <600 mm and ≥600 mm and for thickness ≤80 mm or >80 mm).
  • Angle, special-shape and edge tolerances and declaration of chamfers.

• Surface finish

  • Uniform finishing to edges; declaration of patching/fillers where used.
  • Defined finishing types: ground, polished, flamed, sand-blasted, bush-hammered, riven, etc.

• Material and performance properties

  • Declaration of denomination and visual appearance.
  • Mechanical and durability criteria referenced to European test methods: flexural strength, compressive strength, water absorption at atmospheric pressure, capillary absorption, apparent density and porosity, frost resistance, thermal shock resistance, reaction to fire.

• Quality assurance

  • Marking, packaging, evaluation of conformity, initial type testing and factory production control.
  • Annex A (informative) on sampling principles and procedures.

Practical applications and users

EN 12059 is essential for:

• Architects and specifiers writing stone schedules and façade details.
• Structural engineers assessing load-bearing stone elements.
• Stone fabricators, quarries and suppliers defining production tolerances and finish quality.
• Contractors and façade installers ensuring compliance for cladding, copings, balustrades and window surrounds.
• Test laboratories and certification bodies performing conformity assessment and factory production control.

Keywords: EN 12059:2008+A1:2011, natural stone products, dimensional stone, CEN standard, stone cladding, load-bearing stone, stone tolerances, stone testing.

Related standards (selected)

• EN 13373 - geometric characteristics on units
• EN 1926 / EN 1936 / EN 12372 / EN 13755 - test methods (compressive, density/porosity, flexural, water absorption)
• EN 12440 - denomination criteria
• EN 13501-1 - reaction to fire classification
• EN 771-6 - stone masonry units (excluded by EN 12059)

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Proizvodi iz naravnega kamna - Dimenzijsko obdelan kamen - ZahteveNatursteinprodukte - Steine für Massivarbeiten - AnforderungenProduits en pierre naturelle - Pierre de taille - ExigencesNatural stone products - Dimensional stone work - Requirements91.100.15Mineralni materiali in izdelkiMineral materials and productsICS:Ta slovenski standard je istoveten z:EN 12059:2008+A1:2011SIST EN 12059:2008+A1:2012en,fr,de01-februar-2012SIST EN 12059:2008+A1:2012SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12059:2008+A1
December 2011 ICS 91.100.15 Supersedes EN 12059:2008English Version
Natural stone products - Dimensional stone work - Requirements
Produits en pierre naturelle - Pierre de taille - Exigences
Natursteinprodukte - Steine für Massivarbeiten - Anforderungen This European Standard was approved by CEN on 12 January 2008 and includes Amendment 1 approved by CEN on 13 November 2011.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12059:2008+A1:2011: ESIST EN 12059:2008+A1:2012

Sampling . 14A.1General . 14A.2Principles of sampling . 14A.3Taking bulk samples . 14A.4Preparing a sampling plan . 14A.5Sampling apparatus . 15A.6Sampling methods . 15A.6.1General . 15A.6.2Sampling from quarries . 15A.6.3Sampling from plants . 16A.6.4Sampling from buildings . 16A.7Marking, packaging and dispatch of the samples . 16A.8Sampling report . 16Bibliography . 18 SIST EN 12059:2008+A1:2012

a) Structural solid stone units: i. Load bearing stone elements, typically subject to prevailing compression stresses, such as solid columns, arches and similar; ii. Solid stone elements used for parapets, handrails, balustrades, copings and the like, intended to withstand horizontal live loadings in addition to any dead load. b) Finishing solid stone units: i. Curved cladding panels, for the external finishing of walls, columns or pilasters; ii. Stone elements for framing one or more side openings in building walls or floors, such as sills, jambs, architraves and similar. This European Standard does not include stone masonry units, as defined in EN 771-6, stone which is a ‘cast-on’ finish to pre-cast concrete or agglomerated stones. Moreover it does not cover commemorative or funeral stones and sculptures, when they do not show the above mentioned characteristics. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. !EN 772-1, Methods of test for masonry units — Part 1: Determination of compressive strength" EN 1925, Natural stone test methods — Determination of water absorption coefficient by capillarity EN 1926, Natural stone test methods — Determination of uniaxial compressive strength EN 1936, Natural stone test methods — Determination of real density and apparent density, and of total and open porosity EN 12371, Natural stone test methods — Determination of frost resistance EN 12372, Natural stone test methods — Determination of flexural strength under concentrated load EN 12407, Natural stone test methods — Petrographic examination EN 12440, Natural stone — Denomination criteria EN 12670:2001, Natural stone — Terminology EN 13161, Natural stone test methods — Determination of flexural strength under constant moment EN 13373:2003, Natural stone test methods — Determination of geometric characteristics on units EN 13501-1, Fire classification of construction products and building elements — Part 1: Classification using data from reaction to fire tests EN 13755, Natural stone test methods — Determination of water absorption at atmospheric pressure SIST EN 12059:2008+A1:2012

Tolerance
More than 15 up to and including 30 ± 10 % a More than 30 up to and including 80 ± 3 mm b More than 80 ± 5 mm c a in case of elements to be assembled the tolerance of the visual thickness shall become respectively ± 0,5 mm b in case of elements to be assembled the tolerance of the visual thickness shall become respectively ± 1 mm c in case of elements to be assembled the tolerance of the visual thickness shall become respectively ± 2 mm
Stricter tolerances may be declared by the supplier. SIST EN 12059:2008+A1:2012

Stricter tolerances may be declared by the supplier. 4.1.5 Requirements for angles and special shapes The permissible tolerance at any point shall be as stated in Table 2. Each slab angle shall be in accordance with the agreed geometry. Pieces of special or irregular shape (e.g. curved) shall be checked for compliance with the required shape by use of a suitable template, the permissible tolerance at any point shall be as stated in Table 2. In cases where the thickness of a curved unit is both greater than and less than 80mm at different parts of the unit, the tolerance shall always be that for less than 80mm.
Stricter tolerances may be declared by the supplier. 4.1.6 Requirements for edges !Indicate whether the edges are chamfered." 4.1.7 Requirements for surface finish 4.1.7.1 General Surface finishes shall extend uniform to the edges of the stone element on all treated sides. The surface finishing of some types of stones may typically involve the use of patching, fillers or other similar products for natural holes, faults or cracks: this is to be considered as part of the normal processing. In such cases the type of treatment as well as the type and nature of additional materials shall be declared. Surface finishes shall be suitable for the intended use. 4.1.7.2 Requirements for surfaces after finishing Surfaces shall have a regular appearance according to the finishing process and shall be worked to meet the specified finish (e.g. making reference to samples, see 4.2.2) on all exposed surfaces. SIST EN 12059:2008+A1:2012

2) dressed finish clearly showing tool marks. 4.2 Requirements of natural stone for dimensional work 4.2.1 General Due to the natural variations of the stone materials, deviations from the declared values can occur. Whenever stone processing is likely to change the characteristics of the initial material (e.g. as a consequence of the type of processing or because the use of patching, fillers or other similar products for natural holes, faults, cracks and similar), then this has to be considered when determining the characteristics requested by this standard. SIST EN 12059:2008+A1:2012
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