Scia Concrete Section 2.1

Input dialogue

You can easily follow Tabs in dialogue which show work flow with application.

MEMBER - Calculation type - Check

Description contain User defined description which is shown at the top of calculation.

Calculation Type - Check or Design can be selected

Member Type - Beam or Column can be selected

MEMBER - Calculation type - Design

Use designed reinforcement in checks is used in ....

MEMBER - Check - Column

Buckling data for columns can be defined here.

CROSS SECTION - Cross section

Cross-section including reinforcement is defined here.

• Rectangular - defined by height and width

• Circular - defined by diameter

• T section - defined by total height and width, width of the web and height of the deck

• I section - defined by total height and width, height of upper and lower flange, width of web and height of haunches in the place of connection with web.

• Reversed T section

• Oval - defined by width and height of straight part and by radius in corners

• General - input via table with coordinates of nodes. Inputting node is highlighted with red rectangle. Zero point is marked with intersection of green axes. Coordinates can be copied from MS Office Excel.

Work around for definition of opening

CROSS SECTION - Reinforcement

You can select from predefined templates in the case of predefined shape. Each predefined shape has at least one predefined template. You can set cover of reinforcement as distance from edge to center of longitudinal reinforcement, diameter of reinforcement and number of bars for appropriate edge in template.

Input of reinforcement for general cross-section is possible via table input. Each bar is defined by coordinates and diameter. Position in the table (and bar) is highlighted in the picture by orange circle.

CROSS SECTION - Stirrups reinforcement

You can select from predefined shape of stirrups for predefined cross-sections as in the case of reinforcement. You can set diameter of stirrup, longitudinal spacing between stirrups and angle of stirrups from longitudinal axis.

For general cross section, you can define your own shape of stirrup via table input. Definition of stirrup is based on its outline polygon and Stirrup #. All defined stirrups will have the same diameter, spacing and angle.

Stirrup # means identification of stirrup.

MATERIAL

Materials for concrete, longitudinal and shear reinforcement can be defined here.

You can expand libraries

and for material concrete, select diagram type

• bilinear

• parabola-rectangular

or for reinforcement

• inclined second branch

• horizontal second branch

or you can check material properties used in calculation.

LOAD

There can be defined internal forces acted in the section:

• ULS - (STR/GEO) Set B - used for all ULS checks
• SLS - Characteristic - used for all SLS checks
• SLS - Quasi-Permanent - used for crack and deflection calculations

In case of column calculation, another moments in direction y and z can be defined for begin and end of column.

SETTINGS - General settings

National annex can be defined here.

A wide range of national annexes to the main standard EN 1992-1-1:2004/AC:2010-11 has been implemented

• ÖNORM - Austria
• NBN - Belgium
• BS - United Kingdom
• CSN - Czech Republic
• NEN - Netherlands
• SFS - Finland
• NF - France
• DIN - Germany
• ELOT - Greece
• IS - Ireland
• LU - Luxembourg
• PN - Poland
• SR - Romania
• STN - Slovakia
• SIST - Slovenia
• STD - Standard NA

The selection can easily be made from a combo box on the General setting tab. The values are automatically set or calculated according to the methods of the selected national annex.

Coefficients for calculation of inner level arm and effective height can be defined here too.

SETTINGS - Output

• Size of Interaction diagrams

• Graphics scale in 1:x - It have effect on drawings of stress/strain diagrams in detailed layout

• Position of UCS origin in CSS overview

in the case if User defined origin is selected

SETTINGS - Elastic deformations - SLS Characteristic

SETTINGS - Elastic deformations - SLS - Quasi permanent

SETTINGS - Calculation - ULS - Interaction

Method of check for N-My-Mz interaction diagram - used in Capacity N-My-Mz - Interaction check

• Nu - M_d is constant
• Mu - N_d is constant
• NuMu - eccentricity is constant
• Muy - M_dy is constant
• Muz - M_dz is constant
  
  

SETTINGS - Calculation - ULS - Shear

• Automatic calculation of compression strut angle - used in Capacity Vy-Vz check

• if checked value of compression strut angle is calculated automatically
• if unchecked user can input his/her own value

SETTINGS - Calculation - SLS - Creep

• Automatic calculation of creep coefficient can be switched ON/OFF here

If automatic calculation is ON, user have to define Relative humidity, cement class and ages of concrete

If automatic calculation is OFF, user can input his/her own value of creep coefficient

SETTINGS - Calculation - SLS - Stress limitation & cracks

Parameters for Stress limitation and crack check can be defined here.

If calculation of w_max acc. to selected National annex is OFF, user can input his/her own value of w_max

SETTINGS - Calculation - SLS - Deflection

Limits for deflection can be defined here.

SETTINGS - Calculation - Internal forces recalculation

Settings for recalculation of internal forces can be found here.

SETTINGS - Calculation - Design of reinforcement - Shear

This setting is used only if Type of calculation - Design

Parameters of stirrups for design can be defined here, including stirrups material, diameter of stirrups, number of cuts and angle of stirrups

SETTINGS - Calculation - Design of reinforcement - Longitudinal

This setting is used only if Type of calculation - Design

Parameters of longitudinal reinforcement for design can be defined here.

If automatic determination of type of method is OFF. User can select his/her own method of design. Available methods are:

• Uniaxial
• Biaxial
• General
• Corner design

SETTINGS - Cover

All parameters for automatic calculation of minimal concrete cover can be defined here.

Available parameters depend on selected National annex (Like design life in years). Only Standard reinforcement is available.

Exposure classes for calculation of concrete cover can be selected from combo boxes, Available classes depend on selected National annex.

CONTENT

Project content can be defined for Calculation type - Check in the bottom part of dialog.

Displaying of check also depend on defined load. For example, if Torsional moment M_x is not defined, Torsional check is not done and visible, even it is set ON in the content.

Member type - Beam

Member type - Column

Ultimate limit state checks

• Capacity N-My-Mz - Check based on interaction diagram and check of stress/strain in fibers of cross section and reinforcement bars
• Capacity Vy-Vz - Pure biaxial shear check
• Torsion - Check of cross section on torsional moment
• Interaction V+T+M - Check of combination of shear, torsional and bending internal forces

Each check has its own bookmark. You can easily click on name of check. Layout than scroll on the begin of particular check. The next displayed information is value of unity check.

Serviceability limit state checks

• Stress limitation - check base on limitation of stress in fibres of cross-section and reinforcement.
• Crack width limitation - check based on calculation of crack width.
• Deflection - check based on calculation of un-cracked and cracked stiffness of cross-section and on short-term and long-term deflection caused by creep.

Each check has its own bookmark. You can easily click on name of check. Layout than scroll on the begin of particular check. The next displayed information is value of unity check.

Other checks

Next checks/calculations are available for column:

• Slenderness
• Recalculation of internal forces

Errors, warnings, notes

Each error, warning and note has its own number, description and proposed solution (in the case of error or warning).

Table with errors and warnings

Example of table with error, warning and note