Transverse Beam Construction [TB]

This object places transverse beams under deck into the construction sequence. From the selected stage onward the beams are part of the structure and their self weight is applied.

Transverse beams under deck (blue) over steel plate girders, the members this object constructs; deck drawn transparent

A staged analysis includes a transverse beam only when a construction object constructs it. A beam that no Transverse Beam Construction object constructs is left out of the staged analysis, and it reports no forces. Use one object per stage when the beams are placed in more than one step.

Branching construction sequences

The beams are active only in stages that follow this stage in the construction sequence. If the sequence branches, for example a deck-pour branch and a separate loading branch, place the object on a stage that comes before every stage whose results should include the beams.

Transverse Beam Construction

Stage: The construction stage at which the beams are erected, selected from Construction Stage. A value is required.

Bridge: The bridge whose transverse beams are considered, selected from Bridge Alignment. A value is required.

Construct All/Selection [All/Selection]: Which beams are constructed at this stage.

• All constructs every transverse beam on the decks of the selected bridge.
• Selection constructs only the beams listed in Selected Transverse Beams.

Selected Transverse Beams: The beams constructed at this stage, picked from the Transverse Beams Under Deck objects in the model. Only editable when Construct All/Selection is Selection. At least one beam must be selected.

Transverse Beam Self Weight Factor: Scales the self weight of the beams applied at this stage. The default of 1 applies the weight of the beams as modeled.

Stiffness [No/Yes]: With Yes, the beams are added to the structure at this stage and carry load. With No, the beams do not take part in the structure.

Filler Load [Ignore/Include]: With Include, the weight of the girder fillers of the beams constructed here (steel, in the beam material) is applied at this stage, as a point load at each girder crossing. With Ignore, the default, it is not applied. The concrete haunch fillets are cast with the deck; their weight is applied by the deck construction object's Haunch Load.