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Structural rules

Following structural rules are considered in the analysis:

  • Minimum reinforcement area
  • Maximum reinforcement area
  • Minimum spacing of bars

Minimum reinforcement area

The total area of tensile reinforcement for member types "Beam" and "Slab" is verified in accordance with 9.2.1.1(1):

Where is:

As,t

  • The total area of tensile reinforcement

fctm

  • The mean value of axial tensile strength of concrete

fγk

  • The characteristic yield strength of reinforcement

bt

  • The mean width of the tension zone

d

  • The effective depth of a cross-section

Following verification is performed for member type "Slab", if the check of minimum reinforcement area according to CSN 73 1201, chapter 8.5.2 is switched on:

Where is:

As,t

  • The total area of tensile reinforcement

Ac

  • The area of cross-section

fγk

  • The characteristic yield strength of reinforcement

The total area of vertical reinforcement for member type "Column" is verified in accordance with 9.5.2(2):

Where is:

As

  • The total area of vertical reinforcement

NEd

  • The design value of the compressive force

fγd

  • The design yield strength of reinforcement

Ac

  • The area of cross-section

The area of vertical reinforcement for member type "Walls" is verified in accordance with 9.6.2(1):

Where is:

As

  • The total area of vertical reinforcement

Ac

  • The area of cross-section

Maximum reinforcement area

All member types are verified in accordance with 9.2.1.1(3), 9.5.2(2) and 9.5.2(2):

Where is:

As

  • The total reinforcement area

Ac

  • The area of cross-section

Minimum spacing of bars

The minimum spacing of bars is checked in accordance with 8.2(2):

Where is:

smin

  • The clear distance between bars

k1, k2

  • The constants, k1= 1mm, k2= 5mm

ϕ

  • The bar diameter

dg

  • the maximum size of aggregate

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