NEN EN 14844 : 2006 + A2 2011

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions, symbols and abbreviated terms
  3.1 Terms and definitions
  3.2 Symbols and abbreviations
4 Requirements
  4.1 Material requirements
      4.1.1 General
  4.2 Production requirements
      4.2.1 Concrete production
      4.2.2 Hardened concrete
  4.3 Finished product requirements
      4.3.1 Geometrical properties
      4.3.2 Surface characteristics
      4.3.3 Mechanical resistance
      4.3.7 Durability
      4.3.8 Other requirements
5 Test methods
  5.1 Tests on concrete
  5.2 Measuring of dimensions and surface characteristics
  5.3 Weight of the products
6 Evaluation of conformity
      6.2.2 Initial Type Testing
7 Marking
8 Technical documentation
Annex A (informative) Additional information for the design of
        box culverts
      A.1 Characteristic horizontal load
      A.2 Reinforcement of inner wall faces
      A.3 Stability
      A.4 Horizontal surface loads
      A.5 Deflection of roof slab
      A.6 Differential settlement
Annex B (normative) Verification by calculation aided by
        physical testing
      B.1 Introduction
      B.2 Limit of use of this test
      B.3 Test arrangements
      B.4 Test criteria
      B.5 Definition of the dimensional parameters
      B.6 Definition of the main sections
      B.7 Determination of the test parameters (w[p], w[a], F)
      B.8 Test method
      B.9 Interpretation of the test results
Annex C (informative) Installation
      C.1 Products/Units
      C.2 Preparing the site
      C.3 Bedding
      C.4 Laying
      C.5 Backfilling
Annex Y (informative) Choice of CE marking method
      Y.1 General
      Y.2 Method 1
      Y.3 Method 2
      Y.4 Method 3
Annex ZA (informative) Clauses of this European Standard
         addressing the provisions of the EU Construction
         Products Directive
      ZA.1 Scope and relevant characteristics
      ZA.2 Procedure(s) for the attestation of conformity of box
           culvert units
           ZA.2.1 Systems of attestation of conformity
           ZA.2.2 EC Certificate and Declaration of conformity
      ZA.3 CE marking and labeling
           ZA.3.1 General
           ZA.3.2 Declaration of geometrical data and material
                  Properties
           ZA.3.3 Declaration of product properties
           ZA.3.4 Declaration of compliance with a given design
                  specification
Bibliography

Defines both large (structural) and small (non-structural or light structural) box culverts of rectangular cross-section formed monolithically and designed as continuous elements with a joint detail shaped to allow the possible incorporation of sealing materials.