Section Manager

Calculate the transformed section properties reflecting tendon and reinforcement. Input of reinforcement for the PSC / Composite Steel-I / Composite Steel-Box Sections becomes more user-friendly.

Stress points can be defined at any position for various cross-sections.

From the Main Menu Select Properties > Section > Section Manager.

Stiffness

Transformed section properties with tendon and reinforcement reflected can be calculated for the various section types (DB, PSC, Tapered Section, Composite Section, General and Composite General Section).

Transformed section properties can be calculated at the various locations (1/4, 2/4, 3/4 Part) of the Section. The placement of tendon and reinforcement can be viewed.

The existing two menus, which are ’r;Section Stiffness Scale Factor’ and ’r;Cross Section Viewer’, have been integrated.

Target Section & Element

The Elements are displayed under the assigned Section in the Tree.

Note

Select an Element to input tendon information at an arbitrary location of the Element.

Part

Select the position (i, 1/4, 2/4, 3/4, or j) for which the cross section data of the element is to be produced.

Once the selection is made, the cross section view at that position is updated. In addition, the reinforcement and the tendon at that position is updated to the View and the Table.

View Point

Select the direction based on which the cross section data of the element is to be produced.

Tendon

Display the tendon in the View.

Property Name : Display the Tendon Property Name in the View.

Duct Hall : Display the Duct Hall in the View.

Reinforcement Bar

Display the Reinforcement Bar in the View.

Stiffness Scale Factor

Boundary Group : Select a boundary group in which the section stiffness scale factor is to be included.

Scale Factor(I, J) : Enter the scale factor for each stiffness component.

I = J : This becomes active only when the selected section is a tapered section and different section scale factors can be applied to I-end and J-end.

Before : Valid for a composite section. The defined scale factors will be used for the calculation of member forces and stresses for the pre-composite section.

After : Valid for a composite section. The defined scale factors will be used for the calculation of member forces and stresses for the post-composite section.

All : If both Before and After are checked on, the defined scale factors will be used for the calculation of member forces and stresses for the pre- and post-composite sections.

Note

If Es/Ec (Long Term) and Es/Ec (Shrinkage) are defined in the Section Data, Boundary Groups for the Long Term and the Shrinkage are automatically generated and the applied scale factors are displayed as well.

Area : Cross sectional area

Asy : Effective Shear Area resisting shear forces in the element local y-axis

Asz : Effective Shear Area resisting shear forces in the element local z-axis

Ixx : Torsional Resistance about the element local x-axis

Iyy : Area Moment of Inertia about the element local y-axis

Izz : Area Moment of Inertia about the element local z-axis

Weight : Weight density used for calculating self-weight

Coordinate

Centroid : Display the locations of tendon and reinforcement with reference to the Centroid of the section.

Left-Bottom : Display the locations of tendon and reinforcement with reference to the Left-Bottom.

  Show Stiffness

Display the stiffness with Scale Factor, Reinforcement and Tendon taken into account.

Reinforcement

Longitudinal Reinforcement can be input in various ways (Point /Line/Arc/Circle/Poly Line Types can be input in the Grid).

The way of inputting Reinforced Shear became convenient.

Target Section & Element

Display the Target Section about which the reinforcement data is to be produced in the Tree.

Longitudinal Reinforcement tab

Both end part(i, j) have the same reinforcement : Check the box if the reinforcement is identical for both i and j ends of an element. If this option is unchecked, different reinforcement data can be entered under each I and J tab.

Coordinate

Centroid : When Centroid is selected, the Centroid becomes ( 0, 0 ).

Left-Bottom : When Left-Bottom is selected, the Left-Bottom becomes ( 0, 0 ).

Guide Line

If the value is entered, guide lines are generated using the entered spacing relative to the inner and outer lines of the section.

Type

There are five ways of entering Reinforcements (Point, Line, Arc, Circle, Poly line).

Point Type

Center Point (y,z) : Location of the reinforcement

Dia : Diameter of the rebar

Line Type

Input Method A

Ref. Y, Y : Reference point in element local y-direction. Distance can be entered from the centroid or left most position.

Ref. Z, Z : Reference point in element local z-direction. Distance can be entered from the top or bottom fiber of a section.

Num: Number of rebars

Dia : Diameter of the rebar

Input Method B

Starting Point(y,z) : Starting point of the reinforcements

End Point (y,z) : End point of the reinforcements

Num : Number of rebars

CTC : Spacing of rebars

Edge Bar : Specify whether to place the rebar at the edge or not

Spacing : Spacing of rebars

Dia : Diameter of the rebar

Arc Type

Starting Point(y,z) : Starting point of the reinforcements

Passage Point(y,z) : Intermediate point of the reinforcements (1 point)

End Point (y,z) : End point of the reinforcements

Num : Number of rebars

CTC : Spacing of rebars

Edge Bar : Specify whether to place the rebar at the edge or not

Dia : Diameter of the rebar

Circle Type

Center Point(y,z) : Center point of the reinforcements

Radius : Radius of the reinforcements

Num : Number of rebars

CTC : Spacing of rebars

Dia : Diameter of the rebar

Poly Line

Starting Point(y,z) : Starting point of the reinforcements

Passage Point(y,z) : Intermediate point of the reinforcements (n points)

End Point (y,z) : End point of the reinforcements

Num : Number of rebars

CTC : Spacing of rebars

Edge Bar : Specify whether to place the rebar at the edge or not.

Reference

      Select the Reference to locate the reinforcement within a section.

Ref.Y : Reference in the Y axis (Left, Centroid, Right)

Ref.Z : Reference in the Z axis (Top, Centroid, Bottom)

Ref.Point : Reference point for entering CTC (Start, Center, End)

Part : Part becomes active only when the section is the Composite Type. In case of Composite Steel I and Composite Steel Box, reinforcement can be placed only at Part 2.

As : Total area of the reinforcement that are entered into the Section

Concete Contribution factor(or CCF)

This factor takes into account some contribution of cracked concrete to the section stiffness by the equation Er x Ar / CCF.

        Er : Modulus of elasticity of reinforcement

        Ar : Area of reinforcement in the slab

CCF=1 means that cracked concrete contributes nothing. Only the area of reinforcement in the slab will be considered to calculate section properties of cracked section.

CCF=0.5 means that cracked concrete contributes in some amount. The area of reinforcement in the slab will be double to calculate section properties of cracked section.

Reinforced Shear tab

 Both end part(i, j) have the same reinforcement : Check the box if the reinforcement is identical for both i and j ends of an element. If this option is unchecked, different reinforcement data can be entered under each I and J tab.

Diagonal Reinforcement : Inclined shear reinforcement

Pitch : Interval of the inclined shear reinforcement

Angle : Angle of inclination for the shear reinforcement

Aw : Total area of inclined shear reinforcing steel

Steel Bar for Web : Shear steel bar

Pitch : interval of shear steel bars

Angle : angle of inclination of shear steel bars

Ap : total area of shear steel bars in webs

Pe : effective prestress of the total shear steel bars in webs

Shear Reduction Factor : reduction factor for effective prestress

Torsional Reinforcement : transverse torsional reinforcement

Pitch : interval of transverse torsional reinforcement

Awt : total area of transverse torsional reinforcing steel

Alt : total area of longitudinal torsional reinforcing steel

Enclosing Stirrup : Input the data needed to calculate the enclosed section area used for the calculation of torsional moment    

Cover Thickness : cover thickness of the enclosed stirrup

Include Flange/Cantilever : Check on when the I-type section flange and the cantilever part of Box type section is included in the Cover Thickness.

Area of Reinforcement

The area of reinforcement can be entered using the ’r;Area of Reinforcement’ dialog box.

Stress Points

Stress Points can be defined at any position for the section types of DB, PSC / PSC Value, Tapered Section, Composite Section, General and Composite General Section.

Stress Points can be defined at Part2 of the Composite Section.

Coordinate

Centroid : When Centroid is selected, the Centroid becomes ( 0, 0 ).

Left-Bottom : When Left-Bottom is selected, the Left-Bottom becomes ( 0, 0 ).

Stress Point

Stress Check Points of the section are displayed. (Read Only)

Note

For the PSC Type, ten Stress Check Points (including Shear Check Points Z1, Z2, and Z3) are displayed. For other types, four Stress Check Points are displayed.

Additional Stress Point

Additional Stress Points can be added up to ’r;n’. When Additional Stress Points are added, edited or deleted from the Table, they are updated in the View in real time.