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Advanced mode for member data adjustment on 1D elements

Advanced mode of the Member data adjustment dialogue offers all the possible options.

To select the advanced mode, tick check box Advanced mode at the top part of the dialogue.

The advanced mode allows the user to adjust any parameter to any available value.

General parameters

Name	Defines the name of member data.
Beam type	Specifies the beam type. Available options are: (i) beam, (ii) column, (iii) slab, (iv) rib.
Advanced mode	$image\Target_blue.gif$ In Advanced mode, this option is ON.
Member	Informs about the name of the selected member.

Minimal concrete cover

Input for sides	If ON, the Minimal concrete cover parameters may be defined separately for upper and lower surface.
Environmental class	Defines the environmental class.
Delta tb	Defines the condition that may affect the value of minimal cover (applicable to some standards only).
Concrete	Informs about the concrete grade used.
Stone diameter	Informs about the size of stones in concrete.

Design

Material	Defines the material of reinforcement.
Upper > Number of bars	IMPORTANT: This item specifies number of bars of BASIC REINFORCEMENT. Basic reinforcement is present in the member under all circumstances. All functions in service Concrete Advanced assume that this basic reinforcement already exists in the designed members and any calculated required reinforcement is an addition to this basic reinforcement. This item enables the user to define the assumed number of bars at the top and bottom surface. This number is considered during the design. The design is carried out for a beam that already contains this defined reinforcement and the final necessary reinforcement area means the reinforcement that must be added to this assumed reinforcement. See note below.
Upper > Diameter	Defines the diameter of longitudinal reinforcement at upper surface.
Upper > Type of cover	The user may swap between automatically determined minimal cover and manually defined cover.
Upper > Concrete cover	Informs about the cover size at upper surface or allows for the manual input of exact cover value (depending on the option above).
Lower > Number of bars	This item specifies number of bars of Basic reinforcement at the lower surface See the note below.
Lower > Diameter	Defines the diameter of longitudinal reinforcement at lower surface.
Lower > Concrete cover	Informs about the cover size at lower surface.
Stirrups > Material	Defines the material of stirrups.
Stirrups > Basic distance	Defines the basic distance between stirrups.
Stirrups > Diameter	Defines the diameter of shear reinforcement.
Stirrups > User defined number of cuts	If ON, the user may define the number of legs of stirrups.
Stirrups > Number of cuts	Defines the number of legs of the stirrup.
Stirrups > User defined width for shear	If ON, the user may define the shear width.
Stirrups > Width for shear	Defines the shear width.

The assumed (basic) reinforcement is used for the design of reinforcement only. It enables the user to insert a virtual reinforcement into the beam. This virtual reinforcement is taken into account when the design of reinforcement in that particular member is carried out. It is inserted along the whole member’s length and therefore acts in all sections. As this reinforcement is just a virtual one, it cannot be considered in the checks! On the other hand, it can facilitate the input of practical reinforcement.

Forces reduction

Set support width	The decisive parameter for the calculation of reduced moments and shear forces is the width of the support. It is calculated automatically from the specified width of supports or columns. The user can overload this default by manual input of the width of the support.
Support width	The width of the support for the purpose of calculation of reduced moments and shear forces.

Column calculation

Use buckling data	The option activates a pseudo-linear calculation of buckling for 1D member (the genuine 2nd order analysis is the non-linear one, i.e. using the Timoshenko or Newton-Raphson iteration). If this option is ON, a special algorithm is started on the background that evaluates bar imperfections and 1st + 2nd order deflections which leads to an approximation of the 1st order bending moments by increased 2nd order moments. DIN 1045-1 introduces for this situation the concept of "Model column method" and ÖNORM calls it "Spare bar method". Each national standard implemented in SCIA Engineer uses its analysis path that takes into account the stipulations of the particular standard.
Type of calculation	The type of column analysis. Depending on this parameter, either simple bending or biaxial bending is considered for the design of reinforcement. The option Automatic reads the following parameter (Biaxial bending coefficient) and depending on its value opts for either simple bending or biaxial bending
Biaxial bending coefficient	My/Mz ratio.
User defined y/z	The ratio of areas of reinforcement in individual directions (y, z) can be specified automatically or manually (by the user).
Ratio y/z y [%]	The user-defined ratio of the amount of reinforcement in individual directions. The user specifies the percentage for the y-direction. The percentage for the z-direction is calculated as 100 minus the input value.

Creep coefficients

User defined creep coefficient	If ON, the user may input the creep coefficient.
Creep coefficient	Defines the creep coefficient.
Relative humidity	Defines the Relative humidity.
Load time	Defines the load time in days.
User definednotional size of cross-section	If ON, the user may input the notional size of cross-section manually.
Notional size of cross-section	Defines the notional size of cross-section.
Concrete	Informs about concrete grade.

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