Function
Defines the geometric tendon profile type used for tendon layout generation in PT slabs.
Separate profiles can be assigned for end spans and middle spans, allowing the tendon shape to be adjusted according to span conditions and structural requirements.
The defined tendon profiles are used for tendon layout generation and prestressing force calculations.
Call
From the Main Menu
select [Post Tension] tab > [Tendon] group > [Set Tendon Profile Type]
Input
Set Tendon profile Type
Name
Enter the name of the tendon profile to be defined.
Profile Type
Select the tendon layout pattern to be applied along the span.
Spline: Generates a smooth tendon profile that passes through the specified control points.
Straight: Generates a tendon profile using straight-line segments between the specified control points.
Note. The input parameters are automatically updated based on the selected Profile Type, Span Type, and Support Type. Available inputs may vary by tendon configuration.
Spline
Span Type
Both Supported
Represents a span that is supported at both ends by adjacent supports. The selected tendon profile is applied to all spans, including the first span, the middle spans, and the last span, within the PT slab system.
Shape
Specify the shape for the tendon, such as Parabolic Type 1, 2, and 3. Each shape has a minimum required dimension (CGS_ya, CGS_yb, CGS_yc, a/L, b/L, c/L) that specifies the tendon profile.
Cantilever
Represents a span with one supported end and one free end. This option is used for cantilever slabs located at either the first span or the last span of the PT slab system.
Shape
Specify the shape for the tendon, such as Parabolic Type 1 (Up) and (Down), Parabolic Type 2, and Parabolic Type 3. Each shape has a minimum required dimension (CGS_ya, CGS_yb, CGS_yc, a/L, b/L) that specifies the tendon profile.
Straight
Span Type
Both Supported
Represents a span that is supported at both ends by adjacent supports. The selected tendon profile is applied to all spans, including the first span, the middle spans, and the last span, within the PT slab system.
Shape
Specify the shape for the tendon, such as Straight Type 1, 2, 3, and 4. Each shape has a minimum required dimension (CGS_ya, CGS_yb, CGS_yc, CGS_yd, a/L, b/L, c/L, d/L) that specifies the tendon profile.
Cantilever
Represents a span with one supported end and one free end. This option is used for cantilever slabs located at either the first span or the last span of the PT slab system.
Shape
Specify the shape for the tendon, such as Straight Type 1 and 2. Each shape has a minimum required dimension (CGS_ya, CGS_yb, CGS_yc, a/L, b/L) that specifies the tendon profile.
Profile Input Definitions
CGS_ya: Vertical distance from the top surface to the tendon at the left support location.
CGS_yc: Vertical distance from the bottom surface to the tendon at control point 'c'.
CGS_yd: Vertical distance from the bottom surface to the tendon at control point 'd'.
CGS_yb: Vertical distance from the top surface to the tendon at the right support location.
a/L: Ratio of the distance from the left end of the span to the subsequent tendon control point relative to the span length.
c/L: Ratio of the distance from the left end of the span to the 'c' control point of the tendon profile relative to the span length.
d/L: Ratio of the distance from the left end of the span to the 'd' control point of the tendon profile relative to the span length.
b/L: Ratio of the distance from the right end of the span to the subsequent tendon control point relative to the span length.
Add: Click to create a new tendon profile.
Modify: Select an existing tendon profile and click to modify its properties.
Delete: Select an existing tendon profile and click to remove it from the list.