NEN EN 13084-2 : 2007

1 Scope
2 Normative references
3 Terms and definitions
4 Materials
   4.1 Concrete
        4.1.1 Concrete for cast-in-situ chimneys
        4.1.2 Concrete for prefabricated chimneys
   4.2 Mortar for bedding of prefabricated elements
   4.3 Reinforcing steel
5 Material properties
6 Structural design
   6.1 General
   6.2 Ultimate limit state
        6.2.1 Partial safety factors
        6.2.2 Ultimate limit steel strain
        6.2.3 Moments of 2nd order
        6.2.4 Openings
        6.2.5 Shear stresses in horizontal joints of
               prefabricated chimneys
        6.2.6 Connections of the continuous vertical
               reinforcement
   6.3 Serviceability limit state
        6.3.1 Partial safety factors
        6.3.2 Cracking
        6.3.3 Deflection of the chimney
7 Detailing provisions
   7.1 Cast-in-situ chimneys
        7.1.1 Minimum vertical reinforcement
        7.1.2 Minimum horizontal reinforcement
        7.1.3 Minimum reinforcement around openings
        7.1.4 Distance between bars
        7.1.5 Minimum concrete cover
        7.1.6 Minimum wall thickness
        7.1.7 Splices
   7.2 Prefabricated concrete chimneys
        7.2.1 Minimum reinforcement for transportation of
               prefabricated elements
        7.2.3 Minimum concrete cover
        7.2.4 Minimum wall thickness
        7.2.5 Vertical continuous bundles of bars
        7.2.6 Openings
8 Workmanship
   8.1 General
   8.2 Bedding joints
   8.3 Reinforcement ducts
9 Quality control
   9.1 Cast-in-situ chimneys
   9.2 Prefabricated chimneys
Annex A (normative) Analysis of stresses due to thermal and
        other actions
   A.1 Moment-curvature-relation
   A.2 Calculation procedure
Annex B (normative) Limitations of crack widths

Defines particular requirements and performance criteria for the design and construction of cast-in-situ concrete chimneys as well as prefabricated concrete chimneys. It identifies requirements to ensure the mechanical resistance and stability of concrete chimneys in accordance with the general requirements given in EN 13084-1.