Introduction

General information

With the Concrete Section program a number of concrete sections can be designed and analysed in the Ultimate- and Serviceability Limit State. Moments around two principal axes (skew bending) as well as shearing forces, axial force and torque can be defined. Diameter and structural strength can be mixed arbitrarily when reinforcement is being defined.

Limitations

Program structure

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Design

The Input data field

Section information

Section/Loadcases

Material

Reinforcement details

Calculation settings

Loadcase dependent parameters

Analysis

The input data field

Section information

Section/Loadcase

Material

Reinforcement input

Calculation settings

Loadcase dependent parameters

Calculate

Results

Design

Analysis

Loadcases in the Ultimate Limit State

Loadcases in Serviceability Limit State

Calculation methods

Design

Bending reinforcement

Balanced reinforcement and balanced moment

Reinforcement with compression bars

Underbalanced reinforcement

Reinforcement at tensed section

Without tensile reinforcement

Arranging reinforcement bars

Shear reinforcement

Calculation of sections affected by combined axial, bending, shear and torsion forces

General

Fundamental

Stress distribution

Side wall thickness in the effective section

Reinforcement

Shear capacity

Analysis

Section properties

Area properties of concrete gross section

Area properties of reinforcement in cross-section

Area properties of composite cross-section

Stresses and strains at linear section analysis

Stresses in reinforcement

Time-dependent stresses and strains

Stresses and strain in cracked sections

Cracking

Stresses and strains at non-linear analysis

Internal section forces from stresses and strain

Stress-strain relation for concrete

Stress-strain relation for reinforcement steel

Calculation of stress and strains due to section forces

Elongation and curvature

Ultimate moment capacity

Shear capacity with shear reinforcement

Shear capacity of the shear reinforcement

Shear capacity without shear reinforcement

Shear capacity of the concrete

Rules for shear reinforcement

References