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How Tekla Structures automatically adds objects to pour units

Last updated September 10, 2019 by Tekla User Assistance tekla.documentation@trimble.com

Software version: 
2019i

How Tekla Structures automatically adds objects to pour units

How Tekla Structures automatically adds objects to pour units

When you use the Calculate pour units command, Tekla Structures automatically adds objects to pour units.

Each object that collides with a pour objectbuilding object that is formed of one or more cast-in-place concrete parts, or a part of a cast-in-place concrete part

The cast-in-place concrete parts are merged into one pour object if they have the same material grade and pour phase, and if they touch each other. Pour objects are visible in pour view.

, meaning that the object at least partly overlaps the pour object, is added to the same pour unitentity that combines together a pour object and the other building objects that need to be in place before cast-in-place concrete can be poured

The needed building objects can be reinforcement and embeds, for example.

to which the pour object belongs.

If any object in an assembly or precast cast unit collides with a pour object, the entire assembly or cast unit is added to the pour unit.

Only reinforcement objects that belong to cast-in-place parts are added to pour units.

If any object in a reinforcing bar groupgroup of reinforcing bars that are side by side and have identical properties, except the possible variation in bar lengths

or strandreinforcement that represents a group of wires spun together

group collides with a pour object, the entire group is added to the pour unit. On the other hand, individual reinforcing bars in a rebar set can be added to different pour units.

Objects colliding with more than one pour object

If an object collides with more than one pour object, the object will be associated with the pour object whose bounding boxrectangular border with the smallest measure within which all the selected points that position the model objects lie

In Tekla Structures two-dimensional bounding boxes are used in drawings and three-dimensional bounding boxes in models.

has the lowest global z coordinate.

For example, the reinforcing bars colliding with a footing pour object and a column pour object are associated with the footing pour object because its bottom face has a lower global z coordinate than the column pour object.

If the lowest global z coordinates of the pour object bounding boxes are the same or differ less than 100 mm, the object will be associated with one of the pour objects according to these rules:

  1. If the object's center of gravity is within only one of the colliding pour object bounding boxes, the object will be associated with that pour object.
  2. If the object's center of gravity is within more than one pour object bounding box, or completely outside any pour object bounding box, the object will be associated with the pour object whose center of gravity is closest to the object's center of gravity.

If there are changes in pour units

Whenever there are changes in a pour object or pour unit, all associations to that pour unit are reset. Similarly, if there are changes in an object associated with the pour unit, this association is reset. The next time you use the Calculate pour units command, only the unresolved associations are calculated.

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